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bank_transactions_nop_55

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sample_id int64 0 99	prompt stringlengths 2.94k 4.19k	bug_type stringclasses 4 values	bug_location stringlengths 5 5	explanation stringlengths 29 37	metadata_bug_type stringclasses 4 values	n_operations int64 44 66	full_label stringlengths 101 107	full_metadata stringlengths 39 42
42	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $687: A=4000 → 3313, B=4200 → 4887 [TX002] Transfer $722: B=4887 → 4165, A=3313 → 4035 [TX003] Transfer $467: B=4165 → 3698, A=4035 → 4502 [TX004] Transfer $897: B=3698 → 2801, A=4502 → 5399 [TX005] Transfer $810: B=2801 → 1991, A=5399 → 6209 [TX006] Thread T1: READ B=1991 [TX007] Thread T2: READ B=1991 [TX008] Thread T1: COMMIT B=1991 → 1823 [TX009] Thread T2: COMMIT B=1991 → 1941 [TX010] Transfer $916: A=6209 → 5293, B=1941 → 2857 [TX011] Transfer $305: B=2857 → 2552, A=5293 → 5598 [TX012] Transfer $716: B=2552 → 1836, A=5598 → 6314 [TX013] Transfer $637: A=6314 → 5677, B=1836 → 2473 [TX014] Transfer $529: B=2473 → 1944, A=5677 → 6206 [TX015] Transfer $115: B=1944 → 1829, A=6206 → 6321 [TX016] Transfer $478: B=1829 → 1351, A=6321 → 6799 [TX017] Transfer $377: A=6799 → 6422, B=1351 → 1728 [TX018] Transfer $576: A=6422 → 5846, B=1728 → 2304 [TX019] Transfer $344: A=5846 → 5502, B=2304 → 2648 [TX020] Transfer $666: A=5502 → 4836, B=2648 → 3314 [TX021] Transfer $773: B=3314 → 2541, A=4836 → 5609 [TX022] Transfer $363: A=5609 → 5246, B=2541 → 2904 [TX023] Transfer $285: B=2904 → 2619, A=5246 → 5531 [TX024] Transfer $383: A=5531 → 5148, B=2619 → 3002 [TX025] Transfer $499: B=3002 → 2503, A=5148 → 5647 [TX026] Transfer $728: A=5647 → 4919, B=2503 → 3231 [TX027] Transfer $637: B=3231 → 2594, A=4919 → 5556 [TX028] Transfer $194: B=2594 → 2400, A=5556 → 5750 [TX029] Transfer $84: B=2400 → 2316, A=5750 → 5834 [TX030] Transfer $297: B=2316 → 2019, A=5834 → 6131 [TX031] Transfer $170: A=6131 → 5961, B=2019 → 2189 [TX032] Transfer $715: B=2189 → 1474, A=5961 → 6676 [TX033] Transfer $156: A=6676 → 6520, B=1474 → 1630 [TX034] Transfer $302: A=6520 → 6218, B=1630 → 1932 [TX035] Transfer $487: B=1932 → 1445, A=6218 → 6705 [TX036] Transfer $456: B=1445 → 989, A=6705 → 7161 [TX037] Transfer $195: A=7161 → 6966, B=989 → 1184 [TX038] Transfer $894: A=6966 → 6072, B=1184 → 2078 [TX039] Transfer $423: A=6072 → 5649, B=2078 → 2501 [TX040] Transfer $499: B=2501 → 2002, A=5649 → 6148 [TX041] Transfer $313: B=2002 → 1689, A=6148 → 6461 [TX042] Transfer $177: A=6461 → 6284, B=1689 → 1866 [TX043] Transfer $497: B=1866 → 1369, A=6284 → 6781 [TX044] Transfer $790: B=1369 → 579, A=6781 → 7571 [TX045] Transfer $363: A=7571 → 7208, B=579 → 942 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX009	Thread T2 overwrites T1's change	LOST_UPDATE	45	{"bug_type": "LOST_UPDATE", "bug_location": "TX009", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 45}
41	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $628: A=4000 → 3372, B=4200 → 4828 [TX002] Transfer $358: A=3372 → 3014, B=4828 → 5186 [TX003] Thread T1: READ B=5186 [TX004] Thread T2: READ B=5186 [TX005] Thread T1: COMMIT B=5186 → 5135 [TX006] Thread T2: COMMIT B=5186 → 4994 [TX007] Transfer $122: A=3014 → 2892, B=4994 → 5116 [TX008] Transfer $885: A=2892 → 2007, B=5116 → 6001 [TX009] Transfer $790: A=2007 → 1217, B=6001 → 6791 [TX010] Transfer $56: A=1217 → 1161, B=6791 → 6847 [TX011] Transfer $817: A=1161 → 344, B=6847 → 7664 [TX012] Transfer $129: A=344 → 215, B=7664 → 7793 [TX013] Transfer $87: A=215 → 128, B=7793 → 7880 [TX014] Transfer $22: A=128 → 106, B=7880 → 7902 [TX015] Transfer $216: B=7902 → 7686, A=106 → 322 [TX016] Transfer $344: B=7686 → 7342, A=322 → 666 [TX017] Transfer $108: B=7342 → 7234, A=666 → 774 [TX018] Transfer $163: A=774 → 611, B=7234 → 7397 [TX019] Transfer $265: A=611 → 346, B=7397 → 7662 [TX020] Transfer $231: A=346 → 115, B=7662 → 7893 [TX021] Transfer $11: A=115 → 104, B=7893 → 7904 [TX022] Transfer $205: B=7904 → 7699, A=104 → 309 [TX023] Transfer $799: B=7699 → 6900, A=309 → 1108 [TX024] Transfer $235: A=1108 → 873, B=6900 → 7135 [TX025] Transfer $757: A=873 → 116, B=7135 → 7892 [TX026] Transfer $386: B=7892 → 7506, A=116 → 502 [TX027] Transfer $243: A=502 → 259, B=7506 → 7749 [TX028] Transfer $913: B=7749 → 6836, A=259 → 1172 [TX029] Transfer $223: B=6836 → 6613, A=1172 → 1395 [TX030] Transfer $398: B=6613 → 6215, A=1395 → 1793 [TX031] Transfer $470: B=6215 → 5745, A=1793 → 2263 [TX032] Transfer $1000: A=2263 → 1263, B=5745 → 6745 [TX033] Transfer $345: B=6745 → 6400, A=1263 → 1608 [TX034] Transfer $710: A=1608 → 898, B=6400 → 7110 [TX035] Transfer $141: A=898 → 757, B=7110 → 7251 [TX036] Transfer $471: A=757 → 286, B=7251 → 7722 [TX037] Transfer $780: B=7722 → 6942, A=286 → 1066 [TX038] Transfer $909: B=6942 → 6033, A=1066 → 1975 [TX039] Transfer $810: B=6033 → 5223, A=1975 → 2785 [TX040] Transfer $90: A=2785 → 2695, B=5223 → 5313 [TX041] Transfer $884: B=5313 → 4429, A=2695 → 3579 [TX042] Transfer $859: A=3579 → 2720, B=4429 → 5288 [TX043] Transfer $16: B=5288 → 5272, A=2720 → 2736 [TX044] Transfer $255: B=5272 → 5017, A=2736 → 2991 [TX045] Transfer $595: B=5017 → 4422, A=2991 → 3586 [TX046] Transfer $937: A=3586 → 2649, B=4422 → 5359 [TX047] Transfer $47: A=2649 → 2602, B=5359 → 5406 [TX048] Transfer $753: A=2602 → 1849, B=5406 → 6159 [TX049] Transfer $545: A=1849 → 1304, B=6159 → 6704 [TX050] Transfer $831: B=6704 → 5873, A=1304 → 2135 [TX051] Transfer $509: A=2135 → 1626, B=5873 → 6382 [TX052] Transfer $573: A=1626 → 1053, B=6382 → 6955 [TX053] Transfer $225: A=1053 → 828, B=6955 → 7180 [TX054] Transfer $304: A=828 → 524, B=7180 → 7484 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX006	Thread T2 overwrites T1's change	LOST_UPDATE	54	{"bug_type": "LOST_UPDATE", "bug_location": "TX006", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 54}
91	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $130: A=4000 → 3870, B=4200 → 4330 [TX002] Transfer $966: B=4330 → 3364, A=3870 → 4836 [TX003] Transfer $906: B=3364 → 2458, A=4836 → 5742 [TX004] Transfer $753: B=2458 → 1705, A=5742 → 6495 [TX005] Transfer $977: B=1705 → 728, A=6495 → 7472 [TX006] Transfer $374: B=728 → 354, A=7472 → 7846 [TX007] Transfer $172: B=354 → 182, A=7846 → 8018 [TX008] Transfer $69: B=182 → 113, A=8018 → 8087 [TX009] Transfer $224: A=8087 → 7863, B=113 → 337 [TX010] Transfer $972: A=7863 → 6891, B=337 → 1309 [TX011] Transfer $563: B=1309 → 746, A=6891 → 7454 [TX012] Transfer $316: B=746 → 430, A=7454 → 7770 [TX013] Transfer $146: A=7770 → 7624, B=430 → 576 [TX014] Transfer $279: B=576 → 297, A=7624 → 7903 [TX015] Transfer $161: B=297 → 136, A=7903 → 8064 [TX016] Transfer $14: B=136 → 122, A=8064 → 8078 [TX017] Transfer $566: A=8078 → 7512, B=122 → 688 [TX018] Transfer $961: A=7512 → 6551, B=688 → 1649 [TX019] Transfer $967: B=1649 → 682, A=6551 → 7518 [TX020] Transfer $213: B=682 → 469, A=7518 → 7731 [TX021] Transfer $141: B=469 → 328, A=7731 → 7872 [TX022] Transfer $590: A=7872 → 7282, B=328 → 918 [TX023] Transfer $423: A=7282 → 6859, B=918 → 1341 [TX024] Transfer $253: B=1341 → 1088, A=6859 → 7112 [TX025] Transfer $325: A=7112 → 6787, B=1088 → 1413 [TX026] Transfer $807: A=6787 → 5980, B=1413 → 2220 [TX027] Transfer $23: A=5980 → 5957, B=2220 → 2243 [TX028] Transfer $341: A=5957 → 5616, B=2243 → 2584 [TX029] Transfer $955: A=5616 → 4661, B=2584 → 3539 [TX030] Transfer $763: B=3539 → 2776, A=4661 → 5424 [TX031] Transfer $316: A=5424 → 5108, B=2776 → 3092 [TX032] Transfer $640: A=5108 → 4468, B=3092 → 3732 [TX033] Transfer $488: B=3732 → 3244, A=4468 → 4956 [TX034] Transfer $298: B=3244 → 2946, A=4956 → 5254 [TX035] Transfer $823: B=2946 → 2123, A=5254 → 6077 [TX036] Transfer $6083: A=6077 → -6, B=2123 → 8206 [TX037] Transfer $547: B=8206 → 7659, A=-6 → 541 [TX038] Transfer $577: B=7659 → 7082, A=541 → 1118 [TX039] Transfer $708: B=7082 → 6374, A=1118 → 1826 [TX040] Transfer $681: A=1826 → 1145, B=6374 → 7055 [TX041] Transfer $101: A=1145 → 1044, B=7055 → 7156 [TX042] Transfer $903: A=1044 → 141, B=7156 → 8059 [TX043] Transfer $390: B=8059 → 7669, A=141 → 531 [TX044] Transfer $787: B=7669 → 6882, A=531 → 1318 [TX045] Transfer $955: A=1318 → 363, B=6882 → 7837 [TX046] Transfer $460: B=7837 → 7377, A=363 → 823 [TX047] Transfer $689: A=823 → 134, B=7377 → 8066 [TX048] Transfer $89: B=8066 → 7977, A=134 → 223 [TX049] Transfer $183: B=7977 → 7794, A=223 → 406 [TX050] Transfer $203: A=406 → 203, B=7794 → 7997 [TX051] Transfer $103: A=203 → 100, B=7997 → 8100 [TX052] Balance check: A=100 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX036	Account balance goes negative	NEGATIVE_BAL	52	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX036", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 52}
9	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $407: B=4200 → 3793, A=4000 → 4407 [TX002] Transfer $228: B=3793 → 3565, A=4407 → 4635 [TX003] Transfer $80: B=3565 → 3485, A=4635 → 4715 [TX004] Transfer $929: A=4715 → 3786, B=3485 → 4414 [TX005] Transfer $746: B=4414 → 3668, A=3786 → 4532 [TX006] Transfer $107: A=4532 → 4425, B=3668 → 3775 [TX007] Transfer $204: A=4425 → 4221, B=3775 → 3979 [TX008] Transfer $780: A=4221 → 3441, B=3979 → 4759 [TX009] Transfer $976: A=3441 → 2465, B=4759 → 5735 [TX010] Transfer $774: B=5735 → 4961, A=2465 → 3239 [TX011] Transfer $886: B=4961 → 4075, A=3239 → 4125 [TX012] Transfer $452: B=4075 → 3623, A=4125 → 4577 [TX013] Transfer $454: A=4577 → 4123, B=3623 → 4077 [TX014] Transfer $607: B=4077 → 3470, A=4123 → 4730 [TX015] Transfer $521: A=4730 → 4209, B=3470 → 3991 [TX016] Transfer $474: A=4209 → 3735, B=3991 → 4465 [TX017] Transfer $60: B=4465 → 4405, A=3735 → 3795 [TX018] Transfer $80: B=4405 → 4325, A=3795 → 3875 [TX019] Transfer $475: A=3875 → 3400, B=4325 → 4800 [TX020] Transfer $932: A=3400 → 2468, B=4800 → 5732 [TX021] Transfer $621: A=2468 → 1847, B=5732 → 6353 [TX022] Transfer $982: B=6353 → 5371, A=1847 → 2829 [TX023] Transfer $107: A=2829 → 2722, B=5371 → 5478 [TX024] Transfer $518: B=5478 → 4960, A=2722 → 3240 [TX025] Transfer $255: A=3240 → 2985, B=4960 → 5215 [TX026] Transfer $538: B=5215 → 4677, A=2985 → 3523 [TX027] Transfer $383: A=3523 → 3140, B=4677 → 5060 [TX028] Transfer $420: B=5060 → 4640, A=3140 → 3560 [TX029] Transfer $810: B=4640 → 3830, A=3560 → 4372 [TX030] Transfer $98: A=4370 → 4272, B=3830 → 3928 [TX031] Transfer $260: B=3928 → 3668, A=4272 → 4532 [TX032] Transfer $85: A=4532 → 4447, B=3668 → 3753 [TX033] Transfer $319: A=4447 → 4128, B=3753 → 4072 [TX034] Transfer $611: B=4072 → 3461, A=4128 → 4739 [TX035] Transfer $574: A=4739 → 4165, B=3461 → 4035 [TX036] Transfer $834: B=4035 → 3201, A=4165 → 4999 [TX037] Transfer $663: A=4999 → 4336, B=3201 → 3864 [TX038] Transfer $20: B=3864 → 3844, A=4336 → 4356 [TX039] Transfer $186: B=3844 → 3658, A=4356 → 4542 [TX040] Transfer $972: A=4542 → 3570, B=3658 → 4630 [TX041] Transfer $233: B=4630 → 4397, A=3570 → 3803 [TX042] Transfer $81: A=3803 → 3722, B=4397 → 4478 [TX043] Transfer $521: B=4478 → 3957, A=3722 → 4243 [TX044] Transfer $899: A=4243 → 3344, B=3957 → 4856 [TX045] Transfer $159: A=3344 → 3185, B=4856 → 5015 [TX046] Transfer $853: A=3185 → 2332, B=5015 → 5868 [TX047] Transfer $46: A=2332 → 2286, B=5868 → 5914 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX029	Mathematical calculation is incorrect	CALC_ERROR	47	{"bug_type": "CALC_ERROR", "bug_location": "TX029", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 47}
65	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $108: B=4200 → 4092, A=4000 → 4108 [TX002] Transfer $619: A=4108 → 3489, B=4092 → 4711 [TX003] Transfer $247: B=4711 → 4464, A=3489 → 3736 [TX004] Transfer $556: B=4464 → 3908, A=3736 → 4292 [TX005] Transfer $218: A=4292 → 4074, B=3908 → 4126 [TX006] Transfer $194: A=4074 → 3880, B=4126 → 4320 [TX007] Transfer $248: A=3880 → 3632, B=4320 → 4568 [TX008] Transfer $585: B=4568 → 3983, A=3632 → 4217 [TX009] Transfer $48: A=4217 → 4169, B=3983 → 4031 [TX010] Transfer $97: A=4169 → 4072, B=4031 → 4128 [TX011] Transfer $367: B=4128 → 3761, A=4072 → 4439 [TX012] Transfer $514: B=3761 → 3247, A=4439 → 4953 [TX013] Thread T1: READ A=4953 [TX014] Thread T2: READ A=4953 [TX015] Thread T1: COMMIT A=4953 → 4823 [TX016] Thread T2: COMMIT A=4953 → 4803 [TX017] Transfer $721: B=3247 → 2526, A=4803 → 5524 [TX018] Transfer $419: A=5524 → 5105, B=2526 → 2945 [TX019] Transfer $26: A=5105 → 5079, B=2945 → 2971 [TX020] Transfer $602: B=2971 → 2369, A=5079 → 5681 [TX021] Transfer $167: A=5681 → 5514, B=2369 → 2536 [TX022] Transfer $82: A=5514 → 5432, B=2536 → 2618 [TX023] Transfer $907: A=5432 → 4525, B=2618 → 3525 [TX024] Transfer $789: A=4525 → 3736, B=3525 → 4314 [TX025] Transfer $460: A=3736 → 3276, B=4314 → 4774 [TX026] Transfer $299: A=3276 → 2977, B=4774 → 5073 [TX027] Transfer $42: B=5073 → 5031, A=2977 → 3019 [TX028] Transfer $215: B=5031 → 4816, A=3019 → 3234 [TX029] Transfer $582: A=3234 → 2652, B=4816 → 5398 [TX030] Transfer $826: B=5398 → 4572, A=2652 → 3478 [TX031] Transfer $786: A=3478 → 2692, B=4572 → 5358 [TX032] Transfer $512: B=5358 → 4846, A=2692 → 3204 [TX033] Transfer $323: A=3204 → 2881, B=4846 → 5169 [TX034] Transfer $167: A=2881 → 2714, B=5169 → 5336 [TX035] Transfer $592: A=2714 → 2122, B=5336 → 5928 [TX036] Transfer $93: B=5928 → 5835, A=2122 → 2215 [TX037] Transfer $729: A=2215 → 1486, B=5835 → 6564 [TX038] Transfer $486: B=6564 → 6078, A=1486 → 1972 [TX039] Transfer $667: B=6078 → 5411, A=1972 → 2639 [TX040] Transfer $997: A=2639 → 1642, B=5411 → 6408 [TX041] Transfer $374: B=6408 → 6034, A=1642 → 2016 [TX042] Transfer $420: B=6034 → 5614, A=2016 → 2436 [TX043] Transfer $377: A=2436 → 2059, B=5614 → 5991 [TX044] Transfer $87: B=5991 → 5904, A=2059 → 2146 [TX045] Transfer $271: B=5904 → 5633, A=2146 → 2417 [TX046] Transfer $760: A=2417 → 1657, B=5633 → 6393 [TX047] Transfer $160: A=1657 → 1497, B=6393 → 6553 [TX048] Transfer $386: A=1497 → 1111, B=6553 → 6939 [TX049] Transfer $876: A=1111 → 235, B=6939 → 7815 [TX050] Transfer $101: A=235 → 134, B=7815 → 7916 [TX051] Transfer $359: B=7916 → 7557, A=134 → 493 [TX052] Transfer $659: B=7557 → 6898, A=493 → 1152 [TX053] Transfer $89: B=6898 → 6809, A=1152 → 1241 [TX054] Transfer $941: A=1241 → 300, B=6809 → 7750 [TX055] Transfer $206: B=7750 → 7544, A=300 → 506 [TX056] Transfer $68: B=7544 → 7476, A=506 → 574 [TX057] Transfer $620: B=7476 → 6856, A=574 → 1194 [TX058] Transfer $721: B=6856 → 6135, A=1194 → 1915 [TX059] Transfer $287: B=6135 → 5848, A=1915 → 2202 [TX060] Transfer $560: B=5848 → 5288, A=2202 → 2762 [TX061] Transfer $151: A=2762 → 2611, B=5288 → 5439 [TX062] Transfer $583: A=2611 → 2028, B=5439 → 6022 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX016	Thread T2 overwrites T1's change	LOST_UPDATE	62	{"bug_type": "LOST_UPDATE", "bug_location": "TX016", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 62}
50	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $646: B=4200 → 3554, A=4000 → 4646 [TX002] Transfer $773: A=4646 → 3873, B=3554 → 4327 [TX003] Transfer $143: B=4327 → 4184, A=3873 → 4016 [TX004] Transfer $942: B=4184 → 3242, A=4016 → 4958 [TX005] Transfer $976: B=3242 → 2266, A=4958 → 5934 [TX006] Transfer $455: B=2266 → 1811, A=5934 → 6389 [TX007] Transfer $736: A=6389 → 5653, B=1811 → 2547 [TX008] Transfer $348: A=5653 → 5305, B=2547 → 2895 [TX009] Transfer $792: B=2895 → 2103, A=5305 → 6097 [TX010] Transfer $64: A=6097 → 6033, B=2103 → 2167 [TX011] Transfer $678: B=2167 → 1489, A=6033 → 6711 [TX012] Transfer $648: A=6711 → 6063, B=1489 → 2137 [TX013] Transfer $413: B=2137 → 1724, A=6063 → 6476 [TX014] Transfer $933: B=1724 → 791, A=6476 → 7409 [TX015] Transfer $288: B=791 → 503, A=7409 → 7697 [TX016] Transfer $458: A=7697 → 7239, B=503 → 961 [TX017] Transfer $716: A=7239 → 6523, B=961 → 1677 [TX018] Transfer $796: B=1677 → 881, A=6523 → 7319 [TX019] Transfer $88: A=7319 → 7231, B=881 → 969 [TX020] Transfer $401: A=7231 → 6830, B=969 → 1370 [TX021] Transfer $220: A=6830 → 6610, B=1370 → 1590 [TX022] Transfer $535: A=6610 → 6075, B=1590 → 2125 [TX023] Transfer $25: B=2125 → 2100, A=6075 → 6100 [TX024] Transfer $249: A=6100 → 5851, B=2100 → 2349 [TX025] Transfer $519: B=2349 → 1830, A=5851 → 6371 [TX026] Transfer $267: A=6370 → 6103, B=1830 → 2097 [TX027] Transfer $50: B=2097 → 2047, A=6103 → 6153 [TX028] Transfer $307: A=6153 → 5846, B=2047 → 2354 [TX029] Transfer $349: A=5846 → 5497, B=2354 → 2703 [TX030] Transfer $360: A=5497 → 5137, B=2703 → 3063 [TX031] Transfer $684: B=3063 → 2379, A=5137 → 5821 [TX032] Transfer $534: A=5821 → 5287, B=2379 → 2913 [TX033] Transfer $337: A=5287 → 4950, B=2913 → 3250 [TX034] Transfer $467: A=4950 → 4483, B=3250 → 3717 [TX035] Transfer $730: A=4483 → 3753, B=3717 → 4447 [TX036] Transfer $85: B=4447 → 4362, A=3753 → 3838 [TX037] Transfer $437: A=3838 → 3401, B=4362 → 4799 [TX038] Transfer $221: A=3401 → 3180, B=4799 → 5020 [TX039] Transfer $380: B=5020 → 4640, A=3180 → 3560 [TX040] Transfer $894: B=4640 → 3746, A=3560 → 4454 [TX041] Transfer $653: B=3746 → 3093, A=4454 → 5107 [TX042] Transfer $707: B=3093 → 2386, A=5107 → 5814 [TX043] Transfer $845: B=2386 → 1541, A=5814 → 6659 [TX044] Transfer $519: A=6659 → 6140, B=1541 → 2060 [TX045] Transfer $730: A=6140 → 5410, B=2060 → 2790 [TX046] Transfer $993: B=2790 → 1797, A=5410 → 6403 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX025	Mathematical calculation is incorrect	CALC_ERROR	46	{"bug_type": "CALC_ERROR", "bug_location": "TX025", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 46}
1	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $247: B=4200 → 3953, A=4000 → 4247 [TX002] Transfer $901: A=4247 → 3346, B=3953 → 4854 [TX003] Transfer $751: A=3346 → 2595, B=4854 → 5605 [TX004] Transfer $780: B=5605 → 4825, A=2595 → 3375 [TX005] Transfer $677: A=3375 → 2698, B=4825 → 5502 [TX006] Transfer $273: B=5502 → 5229, A=2698 → 2971 [TX007] Transfer $953: B=5229 → 4276, A=2971 → 3924 [TX008] Transfer $410: A=3924 → 3514, B=4276 → 4686 [TX009] Transfer $4703: B=4686 → -17, A=3514 → 8217 [TX010] Balance check: B=-17 [TX011] Transfer $67: A=8217 → 8150, B=-17 → 50 [TX012] Balance check: B=50 [TX013] Transfer $9: A=8150 → 8141, B=50 → 59 [TX014] Transfer $236: A=8141 → 7905, B=59 → 295 [TX015] Transfer $882: A=7905 → 7023, B=295 → 1177 [TX016] Transfer $528: B=1177 → 649, A=7023 → 7551 [TX017] Transfer $687: A=7551 → 6864, B=649 → 1336 [TX018] Transfer $554: B=1336 → 782, A=6864 → 7418 [TX019] Transfer $250: A=7418 → 7168, B=782 → 1032 [TX020] Transfer $196: B=1032 → 836, A=7168 → 7364 [TX021] Transfer $676: A=7364 → 6688, B=836 → 1512 [TX022] Transfer $435: B=1512 → 1077, A=6688 → 7123 [TX023] Transfer $886: B=1077 → 191, A=7123 → 8009 [TX024] Transfer $64: A=8009 → 7945, B=191 → 255 [TX025] Transfer $29: B=255 → 226, A=7945 → 7974 [TX026] Transfer $196: A=7974 → 7778, B=226 → 422 [TX027] Transfer $218: B=422 → 204, A=7778 → 7996 [TX028] Transfer $475: A=7996 → 7521, B=204 → 679 [TX029] Transfer $455: A=7521 → 7066, B=679 → 1134 [TX030] Transfer $669: A=7066 → 6397, B=1134 → 1803 [TX031] Transfer $950: A=6397 → 5447, B=1803 → 2753 [TX032] Transfer $418: A=5447 → 5029, B=2753 → 3171 [TX033] Transfer $220: B=3171 → 2951, A=5029 → 5249 [TX034] Transfer $170: B=2951 → 2781, A=5249 → 5419 [TX035] Transfer $401: B=2781 → 2380, A=5419 → 5820 [TX036] Transfer $294: B=2380 → 2086, A=5820 → 6114 [TX037] Transfer $160: B=2086 → 1926, A=6114 → 6274 [TX038] Transfer $224: A=6274 → 6050, B=1926 → 2150 [TX039] Transfer $767: A=6050 → 5283, B=2150 → 2917 [TX040] Transfer $53: B=2917 → 2864, A=5283 → 5336 [TX041] Transfer $60: B=2864 → 2804, A=5336 → 5396 [TX042] Transfer $72: A=5396 → 5324, B=2804 → 2876 [TX043] Transfer $415: A=5324 → 4909, B=2876 → 3291 [TX044] Transfer $594: A=4909 → 4315, B=3291 → 3885 [TX045] Transfer $431: A=4315 → 3884, B=3885 → 4316 [TX046] Transfer $211: B=4316 → 4105, A=3884 → 4095 [TX047] Transfer $273: B=4105 → 3832, A=4095 → 4368 [TX048] Transfer $689: B=3832 → 3143, A=4368 → 5057 [TX049] Transfer $325: B=3143 → 2818, A=5057 → 5382 [TX050] Transfer $471: A=5382 → 4911, B=2818 → 3289 [TX051] Transfer $552: A=4911 → 4359, B=3289 → 3841 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX009	Account balance goes negative	NEGATIVE_BAL	51	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX009", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 51}
70	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $183: B=4200 → 4017, A=4000 → 4183 [TX002] Transfer $176: B=4017 → 3841, A=4183 → 4359 [TX003] Transfer $994: A=4359 → 3365, B=3841 → 4835 [TX004] Transfer $502: B=4835 → 4333, A=3365 → 3867 [TX005] Transfer $114: A=3867 → 3753, B=4333 → 4447 [TX006] Transfer $582: A=3753 → 3171, B=4447 → 5029 [TX007] Transfer $539: B=5029 → 4490, A=3171 → 3710 [TX008] Transfer $795: A=3710 → 2915, B=4490 → 5285 [TX009] Transfer $313: A=2915 → 2602, B=5285 → 5598 [TX010] Transfer $504: B=5598 → 5094, A=2602 → 3106 [TX011] Transfer $681: B=5094 → 4413, A=3106 → 3787 [TX012] Transfer $375: B=4413 → 4038, A=3787 → 4162 [TX013] Transfer $849: B=4038 → 3189, A=4162 → 5011 [TX014] Transfer $729: B=3189 → 2460, A=5011 → 5740 [TX015] Transfer $117: B=2460 → 2343, A=5740 → 5857 [TX016] Transfer $153: B=2343 → 2190, A=5857 → 6010 [TX017] Transfer $677: B=2190 → 1513, A=6010 → 6687 [TX018] Transfer $511: A=6687 → 6176, B=1513 → 2024 [TX019] Transfer $593: A=6176 → 5583, B=2024 → 2617 [TX020] Transfer $213: B=2617 → 2404, A=5583 → 5796 [TX021] Transfer $944: A=5796 → 4852, B=2404 → 3348 [TX022] Transfer $990: B=3348 → 2358, A=4852 → 5842 [TX023] Transfer $983: B=2358 → 1375, A=5842 → 6825 [TX024] Transfer $934: A=6825 → 5891, B=1375 → 2309 [TX025] Transfer $402: B=2309 → 1907, A=5891 → 6293 [TX026] Transfer $318: B=1907 → 1589, A=6293 → 6611 [TX027] Transfer $595: A=6611 → 6016, B=1589 → 2184 [TX028] Thread T1: READ B=2184 [TX029] Thread T2: READ B=2184 [TX030] Thread T1: COMMIT B=2184 → 2103 [TX031] Thread T2: COMMIT B=2184 → 2024 [TX032] Transfer $297: B=2024 → 1727, A=6016 → 6313 [TX033] Transfer $512: A=6313 → 5801, B=1727 → 2239 [TX034] Transfer $699: A=5801 → 5102, B=2239 → 2938 [TX035] Transfer $640: A=5102 → 4462, B=2938 → 3578 [TX036] Transfer $500: A=4462 → 3962, B=3578 → 4078 [TX037] Transfer $820: B=4078 → 3258, A=3962 → 4782 [TX038] Transfer $466: B=3258 → 2792, A=4782 → 5248 [TX039] Transfer $291: A=5248 → 4957, B=2792 → 3083 [TX040] Transfer $502: A=4957 → 4455, B=3083 → 3585 [TX041] Transfer $442: B=3585 → 3143, A=4455 → 4897 [TX042] Transfer $53: B=3143 → 3090, A=4897 → 4950 [TX043] Transfer $360: B=3090 → 2730, A=4950 → 5310 [TX044] Transfer $978: B=2730 → 1752, A=5310 → 6288 [TX045] Transfer $148: A=6288 → 6140, B=1752 → 1900 [TX046] Transfer $601: A=6140 → 5539, B=1900 → 2501 [TX047] Transfer $226: A=5539 → 5313, B=2501 → 2727 [TX048] Transfer $957: A=5313 → 4356, B=2727 → 3684 [TX049] Transfer $833: B=3684 → 2851, A=4356 → 5189 [TX050] Transfer $410: B=2851 → 2441, A=5189 → 5599 [TX051] Transfer $944: A=5599 → 4655, B=2441 → 3385 [TX052] Transfer $179: B=3385 → 3206, A=4655 → 4834 [TX053] Transfer $825: B=3206 → 2381, A=4834 → 5659 [TX054] Transfer $258: A=5659 → 5401, B=2381 → 2639 [TX055] Transfer $569: A=5401 → 4832, B=2639 → 3208 [TX056] Transfer $314: A=4832 → 4518, B=3208 → 3522 [TX057] Transfer $582: A=4518 → 3936, B=3522 → 4104 [TX058] Transfer $386: B=4104 → 3718, A=3936 → 4322 [TX059] Transfer $143: B=3718 → 3575, A=4322 → 4465 [TX060] Transfer $517: B=3575 → 3058, A=4465 → 4982 [TX061] Transfer $364: B=3058 → 2694, A=4982 → 5346 [TX062] Transfer $432: B=2694 → 2262, A=5346 → 5778 [TX063] Transfer $30: B=2262 → 2232, A=5778 → 5808 [TX064] Transfer $92: A=5808 → 5716, B=2232 → 2324 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX031	Thread T2 overwrites T1's change	LOST_UPDATE	64	{"bug_type": "LOST_UPDATE", "bug_location": "TX031", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 64}
15	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $309: A=4000 → 3691, B=4200 → 4509 [TX002] Transfer $572: B=4509 → 3937, A=3691 → 4263 [TX003] Transfer $571: A=4263 → 3692, B=3937 → 4508 [TX004] Transfer $997: B=4508 → 3511, A=3692 → 4689 [TX005] Transfer $806: B=3511 → 2705, A=4689 → 5495 [TX006] Transfer $420: B=2705 → 2285, A=5495 → 5915 [TX007] Transfer $387: A=5915 → 5528, B=2285 → 2672 [TX008] Transfer $248: A=5528 → 5280, B=2672 → 2920 [TX009] Transfer $880: A=5280 → 4400, B=2920 → 3800 [TX010] Transfer $938: A=4400 → 3462, B=3800 → 4738 [TX011] Transfer $993: A=3462 → 2469, B=4738 → 5731 [TX012] Transfer $399: B=5731 → 5332, A=2469 → 2868 [TX013] Transfer $210: A=2868 → 2658, B=5332 → 5542 [TX014] Transfer $946: B=5542 → 4596, A=2658 → 3604 [TX015] Transfer $96: B=4596 → 4500, A=3604 → 3700 [TX016] Transfer $276: A=3700 → 3424, B=4500 → 4776 [TX017] Transfer $896: B=4776 → 3880, A=3424 → 4320 [TX018] Transfer $825: A=4320 → 3495, B=3880 → 4705 [TX019] Transfer $215: A=3495 → 3280, B=4705 → 4920 [TX020] Transfer $981: B=4920 → 3939, A=3280 → 4261 [TX021] Transfer $961: A=4261 → 3300, B=3939 → 4900 [TX022] Payment PAY1002: Transfer $766: A=3300 → 2534, B=4900 → 5666 [TX023] Transfer $714: B=5666 → 4952, A=2534 → 3248 [TX024] Transfer $939: A=3248 → 2309, B=4952 → 5891 [TX025] Transfer $796: A=2309 → 1513, B=5891 → 6687 [TX026] Transfer $479: B=6687 → 6208, A=1513 → 1992 [TX027] Transfer $269: B=6208 → 5939, A=1992 → 2261 [TX028] Transfer $479: B=5939 → 5460, A=2261 → 2740 [TX029] Transfer $781: A=2740 → 1959, B=5460 → 6241 [TX030] Transfer $381: B=6241 → 5860, A=1959 → 2340 [TX031] Transfer $48: B=5860 → 5812, A=2340 → 2388 [TX032] Transfer $18: A=2388 → 2370, B=5812 → 5830 [TX033] Transfer $304: B=5830 → 5526, A=2370 → 2674 [TX034] Transfer $339: A=2674 → 2335, B=5526 → 5865 [TX035] Transfer $585: A=2335 → 1750, B=5865 → 6450 [TX036] Transfer $565: A=1750 → 1185, B=6450 → 7015 [TX037] Transfer $783: B=7015 → 6232, A=1185 → 1968 [TX038] Transfer $473: B=6232 → 5759, A=1968 → 2441 [TX039] Payment PAY1002: Transfer $766: A=2441 → 1675, B=5759 → 6525 [TX040] Transfer $175: A=1675 → 1500, B=6525 → 6700 [TX041] Transfer $190: A=1500 → 1310, B=6700 → 6890 [TX042] Transfer $861: A=1310 → 449, B=6890 → 7751 [TX043] Transfer $5: A=449 → 444, B=7751 → 7756 [TX044] Transfer $864: B=7756 → 6892, A=444 → 1308 [TX045] Transfer $726: A=1308 → 582, B=6892 → 7618 [TX046] Transfer $113: A=582 → 469, B=7618 → 7731 [TX047] Transfer $63: B=7731 → 7668, A=469 → 532 [TX048] Transfer $18: B=7668 → 7650, A=532 → 550 [TX049] Transfer $8: A=550 → 542, B=7650 → 7658 [TX050] Transfer $276: A=542 → 266, B=7658 → 7934 [TX051] Transfer $516: B=7934 → 7418, A=266 → 782 [TX052] Transfer $111: B=7418 → 7307, A=782 → 893 [TX053] Transfer $248: A=893 → 645, B=7307 → 7555 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX039	Payment PAY1002 processed twice	DUPLICATE_TXN	53	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX039", "explanation": "Payment PAY1002 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 53}
78	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $409: B=4200 → 3791, A=4000 → 4409 [TX002] Transfer $282: A=4409 → 4127, B=3791 → 4073 [TX003] Thread T1: READ A=4127 [TX004] Thread T2: READ A=4127 [TX005] Thread T1: COMMIT A=4127 → 3931 [TX006] Thread T2: COMMIT A=4127 → 4070 [TX007] Transfer $504: B=4073 → 3569, A=4070 → 4574 [TX008] Transfer $769: A=4574 → 3805, B=3569 → 4338 [TX009] Transfer $380: A=3805 → 3425, B=4338 → 4718 [TX010] Transfer $724: A=3425 → 2701, B=4718 → 5442 [TX011] Transfer $86: A=2701 → 2615, B=5442 → 5528 [TX012] Transfer $59: B=5528 → 5469, A=2615 → 2674 [TX013] Transfer $323: B=5469 → 5146, A=2674 → 2997 [TX014] Transfer $875: A=2997 → 2122, B=5146 → 6021 [TX015] Transfer $342: A=2122 → 1780, B=6021 → 6363 [TX016] Transfer $929: B=6363 → 5434, A=1780 → 2709 [TX017] Transfer $965: B=5434 → 4469, A=2709 → 3674 [TX018] Transfer $859: B=4469 → 3610, A=3674 → 4533 [TX019] Transfer $199: A=4533 → 4334, B=3610 → 3809 [TX020] Transfer $87: A=4334 → 4247, B=3809 → 3896 [TX021] Transfer $47: A=4247 → 4200, B=3896 → 3943 [TX022] Transfer $707: B=3943 → 3236, A=4200 → 4907 [TX023] Transfer $652: B=3236 → 2584, A=4907 → 5559 [TX024] Transfer $282: A=5559 → 5277, B=2584 → 2866 [TX025] Transfer $351: B=2866 → 2515, A=5277 → 5628 [TX026] Transfer $581: B=2515 → 1934, A=5628 → 6209 [TX027] Transfer $121: B=1934 → 1813, A=6209 → 6330 [TX028] Transfer $749: A=6330 → 5581, B=1813 → 2562 [TX029] Transfer $327: A=5581 → 5254, B=2562 → 2889 [TX030] Transfer $809: A=5254 → 4445, B=2889 → 3698 [TX031] Transfer $655: A=4445 → 3790, B=3698 → 4353 [TX032] Transfer $85: B=4353 → 4268, A=3790 → 3875 [TX033] Transfer $859: A=3875 → 3016, B=4268 → 5127 [TX034] Transfer $319: A=3016 → 2697, B=5127 → 5446 [TX035] Transfer $724: A=2697 → 1973, B=5446 → 6170 [TX036] Transfer $287: B=6170 → 5883, A=1973 → 2260 [TX037] Transfer $425: A=2260 → 1835, B=5883 → 6308 [TX038] Transfer $281: A=1835 → 1554, B=6308 → 6589 [TX039] Transfer $304: A=1554 → 1250, B=6589 → 6893 [TX040] Transfer $272: B=6893 → 6621, A=1250 → 1522 [TX041] Transfer $365: A=1522 → 1157, B=6621 → 6986 [TX042] Transfer $792: B=6986 → 6194, A=1157 → 1949 [TX043] Transfer $39: B=6194 → 6155, A=1949 → 1988 [TX044] Transfer $552: B=6155 → 5603, A=1988 → 2540 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX006	Thread T2 overwrites T1's change	LOST_UPDATE	44	{"bug_type": "LOST_UPDATE", "bug_location": "TX006", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 44}
73	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $667: A=4000 → 3333, B=4200 → 4867 [TX002] Transfer $23: B=4867 → 4844, A=3333 → 3356 [TX003] Transfer $278: B=4844 → 4566, A=3356 → 3634 [TX004] Transfer $309: B=4566 → 4257, A=3634 → 3943 [TX005] Payment PAY1022: Transfer $287: A=3943 → 3656, B=4257 → 4544 [TX006] Transfer $21: B=4544 → 4523, A=3656 → 3677 [TX007] Transfer $456: B=4523 → 4067, A=3677 → 4133 [TX008] Payment PAY1022: Transfer $287: A=4133 → 3846, B=4067 → 4354 [TX009] Transfer $212: A=3846 → 3634, B=4354 → 4566 [TX010] Transfer $677: B=4566 → 3889, A=3634 → 4311 [TX011] Transfer $678: B=3889 → 3211, A=4311 → 4989 [TX012] Transfer $556: B=3211 → 2655, A=4989 → 5545 [TX013] Transfer $933: B=2655 → 1722, A=5545 → 6478 [TX014] Transfer $831: B=1722 → 891, A=6478 → 7309 [TX015] Transfer $351: A=7309 → 6958, B=891 → 1242 [TX016] Transfer $803: B=1242 → 439, A=6958 → 7761 [TX017] Transfer $568: A=7761 → 7193, B=439 → 1007 [TX018] Transfer $881: B=1007 → 126, A=7193 → 8074 [TX019] Transfer $20: B=126 → 106, A=8074 → 8094 [TX020] Transfer $5: B=106 → 101, A=8094 → 8099 [TX021] Balance check: B=101 [TX022] Transfer $289: A=8099 → 7810, B=101 → 390 [TX023] Transfer $129: B=390 → 261, A=7810 → 7939 [TX024] Transfer $148: B=261 → 113, A=7939 → 8087 [TX025] Transfer $11: B=113 → 102, A=8087 → 8098 [TX026] Transfer $2: B=102 → 100, A=8098 → 8100 [TX027] Balance check: B=100 [TX028] Transfer $584: A=8100 → 7516, B=100 → 684 [TX029] Transfer $185: B=684 → 499, A=7516 → 7701 [TX030] Transfer $10: B=499 → 489, A=7701 → 7711 [TX031] Transfer $240: B=489 → 249, A=7711 → 7951 [TX032] Transfer $493: A=7951 → 7458, B=249 → 742 [TX033] Transfer $61: A=7458 → 7397, B=742 → 803 [TX034] Transfer $920: A=7397 → 6477, B=803 → 1723 [TX035] Transfer $453: B=1723 → 1270, A=6477 → 6930 [TX036] Transfer $786: A=6930 → 6144, B=1270 → 2056 [TX037] Transfer $891: B=2056 → 1165, A=6144 → 7035 [TX038] Transfer $234: B=1165 → 931, A=7035 → 7269 [TX039] Transfer $894: A=7269 → 6375, B=931 → 1825 [TX040] Transfer $119: A=6375 → 6256, B=1825 → 1944 [TX041] Transfer $702: A=6256 → 5554, B=1944 → 2646 [TX042] Transfer $44: B=2646 → 2602, A=5554 → 5598 [TX043] Transfer $976: A=5598 → 4622, B=2602 → 3578 [TX044] Transfer $18: B=3578 → 3560, A=4622 → 4640 [TX045] Transfer $616: B=3560 → 2944, A=4640 → 5256 [TX046] Transfer $113: A=5256 → 5143, B=2944 → 3057 [TX047] Transfer $117: A=5143 → 5026, B=3057 → 3174 [TX048] Transfer $210: A=5026 → 4816, B=3174 → 3384 [TX049] Transfer $851: B=3384 → 2533, A=4816 → 5667 [TX050] Transfer $659: B=2533 → 1874, A=5667 → 6326 [TX051] Transfer $148: B=1874 → 1726, A=6326 → 6474 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX008	Payment PAY1022 processed twice	DUPLICATE_TXN	51	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX008", "explanation": "Payment PAY1022 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 51}
10	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $772: B=4200 → 3428, A=4000 → 4772 [TX002] Transfer $548: B=3428 → 2880, A=4772 → 5320 [TX003] Transfer $990: A=5320 → 4330, B=2880 → 3870 [TX004] Transfer $378: B=3870 → 3492, A=4330 → 4708 [TX005] Transfer $789: B=3492 → 2703, A=4708 → 5497 [TX006] Transfer $516: B=2703 → 2187, A=5497 → 6013 [TX007] Transfer $838: B=2187 → 1349, A=6013 → 6851 [TX008] Transfer $895: A=6851 → 5956, B=1349 → 2244 [TX009] Transfer $658: B=2244 → 1586, A=5956 → 6614 [TX010] Transfer $569: B=1586 → 1017, A=6614 → 7183 [TX011] Transfer $293: A=7183 → 6890, B=1017 → 1310 [TX012] Transfer $281: A=6890 → 6609, B=1310 → 1591 [TX013] Transfer $852: B=1591 → 739, A=6609 → 7461 [TX014] Transfer $229: B=739 → 510, A=7461 → 7690 [TX015] Transfer $15: B=510 → 495, A=7690 → 7705 [TX016] Transfer $204: B=495 → 291, A=7705 → 7909 [TX017] Transfer $304: B=291 → -13, A=7909 → 8213 [TX018] Transfer $231: A=8213 → 7982, B=-13 → 218 [TX019] Transfer $955: A=7982 → 7027, B=218 → 1173 [TX020] Transfer $812: A=7027 → 6215, B=1173 → 1985 [TX021] Transfer $41: A=6215 → 6174, B=1985 → 2026 [TX022] Transfer $714: B=2026 → 1312, A=6174 → 6888 [TX023] Transfer $461: A=6888 → 6427, B=1312 → 1773 [TX024] Transfer $21: A=6427 → 6406, B=1773 → 1794 [TX025] Transfer $857: B=1794 → 937, A=6406 → 7263 [TX026] Transfer $115: A=7263 → 7148, B=937 → 1052 [TX027] Transfer $310: B=1052 → 742, A=7148 → 7458 [TX028] Transfer $246: A=7458 → 7212, B=742 → 988 [TX029] Transfer $66: B=988 → 922, A=7212 → 7278 [TX030] Transfer $613: A=7278 → 6665, B=922 → 1535 [TX031] Transfer $737: A=6665 → 5928, B=1535 → 2272 [TX032] Transfer $441: A=5928 → 5487, B=2272 → 2713 [TX033] Transfer $248: A=5487 → 5239, B=2713 → 2961 [TX034] Transfer $682: B=2961 → 2279, A=5239 → 5921 [TX035] Transfer $71: A=5921 → 5850, B=2279 → 2350 [TX036] Transfer $896: A=5850 → 4954, B=2350 → 3246 [TX037] Transfer $652: B=3246 → 2594, A=4954 → 5606 [TX038] Transfer $261: B=2594 → 2333, A=5606 → 5867 [TX039] Transfer $809: A=5867 → 5058, B=2333 → 3142 [TX040] Transfer $248: A=5058 → 4810, B=3142 → 3390 [TX041] Transfer $138: A=4810 → 4672, B=3390 → 3528 [TX042] Transfer $561: A=4672 → 4111, B=3528 → 4089 [TX043] Transfer $852: B=4089 → 3237, A=4111 → 4963 [TX044] Transfer $648: B=3237 → 2589, A=4963 → 5611 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX017	Account balance goes negative	NEGATIVE_BAL	44	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX017", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 44}
55	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $704: B=4200 → 3496, A=4000 → 4704 [TX002] Transfer $335: B=3496 → 3161, A=4704 → 5039 [TX003] Transfer $946: A=5039 → 4093, B=3161 → 4107 [TX004] Transfer $977: A=4093 → 3116, B=4107 → 5084 [TX005] Transfer $392: B=5084 → 4692, A=3116 → 3508 [TX006] Transfer $67: A=3508 → 3441, B=4692 → 4759 [TX007] Transfer $488: B=4759 → 4271, A=3441 → 3929 [TX008] Transfer $585: A=3929 → 3344, B=4271 → 4856 [TX009] Transfer $97: B=4856 → 4759, A=3344 → 3441 [TX010] Transfer $693: A=3441 → 2748, B=4759 → 5452 [TX011] Payment PAY1017: Transfer $848: A=2748 → 1900, B=5452 → 6300 [TX012] Transfer $193: B=6300 → 6107, A=1900 → 2093 [TX013] Transfer $935: A=2093 → 1158, B=6107 → 7042 [TX014] Transfer $212: B=7042 → 6830, A=1158 → 1370 [TX015] Transfer $677: A=1370 → 693, B=6830 → 7507 [TX016] Transfer $60: A=693 → 633, B=7507 → 7567 [TX017] Transfer $177: B=7567 → 7390, A=633 → 810 [TX018] Transfer $402: B=7390 → 6988, A=810 → 1212 [TX019] Transfer $134: A=1212 → 1078, B=6988 → 7122 [TX020] Transfer $762: B=7122 → 6360, A=1078 → 1840 [TX021] Transfer $980: A=1840 → 860, B=6360 → 7340 [TX022] Transfer $212: A=860 → 648, B=7340 → 7552 [TX023] Transfer $839: B=7552 → 6713, A=648 → 1487 [TX024] Transfer $620: B=6713 → 6093, A=1487 → 2107 [TX025] Transfer $516: B=6093 → 5577, A=2107 → 2623 [TX026] Payment PAY1017: Transfer $848: A=2623 → 1775, B=5577 → 6425 [TX027] Transfer $208: B=6425 → 6217, A=1775 → 1983 [TX028] Transfer $458: A=1983 → 1525, B=6217 → 6675 [TX029] Transfer $621: A=1525 → 904, B=6675 → 7296 [TX030] Transfer $584: A=904 → 320, B=7296 → 7880 [TX031] Transfer $475: B=7880 → 7405, A=320 → 795 [TX032] Transfer $296: A=795 → 499, B=7405 → 7701 [TX033] Transfer $719: B=7701 → 6982, A=499 → 1218 [TX034] Transfer $629: B=6982 → 6353, A=1218 → 1847 [TX035] Transfer $257: A=1847 → 1590, B=6353 → 6610 [TX036] Transfer $470: A=1590 → 1120, B=6610 → 7080 [TX037] Transfer $717: B=7080 → 6363, A=1120 → 1837 [TX038] Transfer $717: A=1837 → 1120, B=6363 → 7080 [TX039] Transfer $908: A=1120 → 212, B=7080 → 7988 [TX040] Transfer $82: A=212 → 130, B=7988 → 8070 [TX041] Transfer $716: B=8070 → 7354, A=130 → 846 [TX042] Transfer $423: A=846 → 423, B=7354 → 7777 [TX043] Transfer $41: A=423 → 382, B=7777 → 7818 [TX044] Transfer $211: A=382 → 171, B=7818 → 8029 [TX045] Transfer $260: B=8029 → 7769, A=171 → 431 [TX046] Transfer $238: A=431 → 193, B=7769 → 8007 [TX047] Transfer $83: A=193 → 110, B=8007 → 8090 [TX048] Transfer $353: B=8090 → 7737, A=110 → 463 [TX049] Transfer $408: B=7737 → 7329, A=463 → 871 [TX050] Transfer $258: A=871 → 613, B=7329 → 7587 [TX051] Transfer $336: A=613 → 277, B=7587 → 7923 [TX052] Transfer $474: B=7923 → 7449, A=277 → 751 [TX053] Transfer $563: A=751 → 188, B=7449 → 8012 [TX054] Transfer $19: A=188 → 169, B=8012 → 8031 [TX055] Transfer $863: B=8031 → 7168, A=169 → 1032 [TX056] Transfer $860: A=1032 → 172, B=7168 → 8028 [TX057] Transfer $24: A=172 → 148, B=8028 → 8052 [TX058] Transfer $549: B=8052 → 7503, A=148 → 697 [TX059] Transfer $81: B=7503 → 7422, A=697 → 778 [TX060] Transfer $159: A=778 → 619, B=7422 → 7581 [TX061] Transfer $184: B=7581 → 7397, A=619 → 803 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX026	Payment PAY1017 processed twice	DUPLICATE_TXN	61	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX026", "explanation": "Payment PAY1017 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 61}
56	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $715: A=4000 → 3285, B=4200 → 4915 [TX002] Transfer $401: A=3285 → 2884, B=4915 → 5316 [TX003] Transfer $55: B=5316 → 5261, A=2884 → 2939 [TX004] Transfer $792: A=2939 → 2147, B=5261 → 6053 [TX005] Transfer $953: B=6053 → 5100, A=2147 → 3100 [TX006] Transfer $932: A=3100 → 2168, B=5100 → 6032 [TX007] Transfer $95: A=2168 → 2073, B=6032 → 6127 [TX008] Transfer $30: A=2073 → 2043, B=6127 → 6157 [TX009] Transfer $842: A=2043 → 1201, B=6157 → 6999 [TX010] Transfer $227: A=1201 → 974, B=6999 → 7226 [TX011] Transfer $743: A=974 → 231, B=7226 → 7969 [TX012] Transfer $108: A=231 → 123, B=7969 → 8077 [TX013] Transfer $12: A=123 → 111, B=8077 → 8089 [TX014] Transfer $10: A=111 → 101, B=8089 → 8099 [TX015] Transfer $125: B=8099 → 7974, A=101 → 226 [TX016] Transfer $15: A=226 → 211, B=7974 → 7989 [TX017] Transfer $179: B=7989 → 7810, A=211 → 390 [TX018] Transfer $163: A=390 → 227, B=7810 → 7973 [TX019] Transfer $29: A=227 → 198, B=7973 → 8002 [TX020] Transfer $69: B=8002 → 7933, A=198 → 267 [TX021] Transfer $46: B=7933 → 7887, A=267 → 313 [TX022] Transfer $107: A=313 → 206, B=7887 → 7994 [TX023] Transfer $106: B=7994 → 7888, A=206 → 312 [TX024] Transfer $26: A=312 → 286, B=7888 → 7914 [TX025] Transfer $696: B=7914 → 7218, A=286 → 982 [TX026] Transfer $181: A=982 → 801, B=7218 → 7399 [TX027] Transfer $71: B=7399 → 7328, A=801 → 872 [TX028] Transfer $625: B=7328 → 6703, A=872 → 1497 [TX029] Transfer $525: B=6703 → 6178, A=1497 → 2022 [TX030] Transfer $240: A=2022 → 1782, B=6178 → 6418 [TX031] Transfer $318: A=1782 → 1464, B=6418 → 6736 [TX032] Transfer $777: A=1464 → 687, B=6736 → 7513 [TX033] Transfer $63: A=687 → 624, B=7513 → 7576 [TX034] Transfer $512: A=624 → 112, B=7576 → 8088 [TX035] Transfer $157: B=8088 → 7931, A=112 → 269 [TX036] Transfer $659: B=7931 → 7272, A=269 → 928 [TX037] Transfer $744: A=928 → 184, B=7272 → 8016 [TX038] Transfer $139: B=8016 → 7877, A=184 → 323 [TX039] Transfer $661: B=7877 → 7216, A=323 → 984 [TX040] Transfer $665: A=984 → 319, B=7216 → 7881 [TX041] Transfer $236: B=7881 → 7645, A=319 → 555 [TX042] Transfer $250: B=7645 → 7395, A=555 → 805 [TX043] Transfer $682: A=805 → 123, B=7395 → 8077 [TX044] Thread T1: READ A=123 [TX045] Thread T2: READ A=123 [TX046] Thread T1: COMMIT A=123 → 93 [TX047] Thread T2: COMMIT A=123 → 93 [TX048] Balance check: A=93 [TX049] Transfer $454: B=8077 → 7623, A=93 → 547 [TX050] Transfer $447: A=547 → 100, B=7623 → 8070 [TX051] Transfer $978: B=8070 → 7092, A=100 → 1078 [TX052] Transfer $651: A=1078 → 427, B=7092 → 7743 [TX053] Transfer $66: A=427 → 361, B=7743 → 7809 [TX054] Transfer $106: A=361 → 255, B=7809 → 7915 [TX055] Transfer $111: A=255 → 144, B=7915 → 8026 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX047	Thread T2 overwrites T1's change	LOST_UPDATE	55	{"bug_type": "LOST_UPDATE", "bug_location": "TX047", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 55}
72	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $598: A=4000 → 3402, B=4200 → 4798 [TX002] Transfer $210: A=3402 → 3192, B=4798 → 5008 [TX003] Transfer $916: A=3192 → 2276, B=5008 → 5924 [TX004] Transfer $794: A=2276 → 1482, B=5924 → 6718 [TX005] Transfer $350: B=6718 → 6368, A=1482 → 1832 [TX006] Transfer $196: A=1832 → 1636, B=6368 → 6564 [TX007] Transfer $514: A=1636 → 1122, B=6564 → 7078 [TX008] Transfer $635: B=7078 → 6443, A=1122 → 1757 [TX009] Transfer $451: A=1757 → 1306, B=6443 → 6894 [TX010] Transfer $896: B=6894 → 5998, A=1306 → 2202 [TX011] Transfer $132: A=2202 → 2070, B=5998 → 6130 [TX012] Transfer $122: B=6130 → 6008, A=2070 → 2192 [TX013] Transfer $54: B=6008 → 5954, A=2192 → 2246 [TX014] Transfer $231: B=5954 → 5723, A=2246 → 2477 [TX015] Transfer $401: B=5723 → 5322, A=2477 → 2878 [TX016] Transfer $895: B=5322 → 4427, A=2878 → 3773 [TX017] Transfer $78: A=3773 → 3695, B=4427 → 4505 [TX018] Transfer $410: A=3695 → 3285, B=4505 → 4915 [TX019] Transfer $598: A=3285 → 2687, B=4915 → 5513 [TX020] Transfer $670: B=5513 → 4843, A=2687 → 3357 [TX021] Transfer $348: A=3357 → 3009, B=4843 → 5191 [TX022] Transfer $207: B=5191 → 4984, A=3009 → 3216 [TX023] Transfer $144: B=4984 → 4840, A=3216 → 3360 [TX024] Transfer $948: A=3360 → 2412, B=4840 → 5788 [TX025] Transfer $507: A=2412 → 1905, B=5788 → 6295 [TX026] Transfer $356: A=1905 → 1549, B=6295 → 6651 [TX027] Transfer $614: A=1549 → 935, B=6651 → 7265 [TX028] Transfer $134: A=935 → 801, B=7265 → 7399 [TX029] Transfer $108: B=7399 → 7291, A=801 → 909 [TX030] Transfer $521: A=909 → 388, B=7291 → 7812 [TX031] Transfer $222: A=388 → 166, B=7812 → 8034 [TX032] Transfer $802: B=8034 → 7232, A=166 → 968 [TX033] Transfer $58: A=968 → 910, B=7232 → 7290 [TX034] Transfer $549: A=910 → 361, B=7290 → 7839 [TX035] Transfer $567: B=7839 → 7272, A=361 → 928 [TX036] Transfer $398: B=7272 → 6874, A=928 → 1326 [TX037] Transfer $442: B=6874 → 6432, A=1326 → 1768 [TX038] Transfer $120: B=6432 → 6312, A=1768 → 1888 [TX039] Transfer $920: B=6312 → 5392, A=1888 → 2808 [TX040] Transfer $200: B=5392 → 5192, A=2808 → 3008 [TX041] Transfer $942: B=5192 → 4250, A=3008 → 3950 [TX042] Transfer $239: A=3950 → 3711, B=4250 → 4489 [TX043] Transfer $234: A=3711 → 3477, B=4489 → 4723 [TX044] Transfer $823: B=4723 → 3900, A=3477 → 4300 [TX045] Transfer $834: A=4300 → 3466, B=3900 → 4734 [TX046] Transfer $60: A=3466 → 3406, B=4734 → 4794 [TX047] Transfer $186: A=3406 → 3220, B=4794 → 4980 [TX048] Transfer $323: B=4980 → 4657, A=3220 → 3543 [TX049] Transfer $301: B=4657 → 4356, A=3543 → 3844 [TX050] Transfer $492: A=3844 → 3352, B=4356 → 4848 [TX051] Transfer $80: A=3352 → 3272, B=4848 → 4928 [TX052] Transfer $508: B=4928 → 4420, A=3272 → 3780 [TX053] Transfer $456: B=4420 → 3964, A=3780 → 4236 [TX054] Transfer $800: B=3964 → 3164, A=4236 → 5038 [TX055] Transfer $328: A=5036 → 4708, B=3164 → 3492 [TX056] Transfer $356: A=4708 → 4352, B=3492 → 3848 [TX057] Transfer $288: B=3848 → 3560, A=4352 → 4640 [TX058] Transfer $935: A=4640 → 3705, B=3560 → 4495 [TX059] Transfer $314: A=3705 → 3391, B=4495 → 4809 [TX060] Transfer $383: A=3391 → 3008, B=4809 → 5192 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX054	Mathematical calculation is incorrect	CALC_ERROR	60	{"bug_type": "CALC_ERROR", "bug_location": "TX054", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 60}
45	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $233: B=4200 → 3967, A=4000 → 4233 [TX002] Transfer $877: B=3967 → 3090, A=4233 → 5110 [TX003] Transfer $879: B=3090 → 2211, A=5110 → 5989 [TX004] Transfer $963: A=5989 → 5026, B=2211 → 3174 [TX005] Transfer $15: B=3174 → 3159, A=5026 → 5041 [TX006] Transfer $407: B=3159 → 2752, A=5041 → 5448 [TX007] Transfer $124: B=2752 → 2628, A=5448 → 5572 [TX008] Transfer $412: A=5572 → 5160, B=2628 → 3040 [TX009] Transfer $68: A=5160 → 5092, B=3040 → 3108 [TX010] Transfer $348: B=3108 → 2760, A=5092 → 5440 [TX011] Transfer $127: A=5440 → 5313, B=2760 → 2887 [TX012] Transfer $744: A=5313 → 4569, B=2887 → 3631 [TX013] Transfer $785: B=3631 → 2846, A=4569 → 5354 [TX014] Transfer $366: B=2846 → 2480, A=5354 → 5720 [TX015] Transfer $498: B=2480 → 1982, A=5720 → 6218 [TX016] Transfer $788: B=1982 → 1194, A=6218 → 7006 [TX017] Transfer $127: B=1194 → 1067, A=7006 → 7133 [TX018] Transfer $511: B=1067 → 556, A=7133 → 7644 [TX019] Transfer $32: A=7644 → 7612, B=556 → 588 [TX020] Transfer $852: A=7612 → 6760, B=588 → 1440 [TX021] Transfer $696: A=6760 → 6064, B=1440 → 2136 [TX022] Transfer $393: A=6064 → 5671, B=2136 → 2529 [TX023] Transfer $312: B=2529 → 2217, A=5671 → 5983 [TX024] Transfer $678: A=5983 → 5305, B=2217 → 2895 [TX025] Transfer $208: B=2895 → 2687, A=5305 → 5513 [TX026] Transfer $504: B=2687 → 2183, A=5513 → 6017 [TX027] Transfer $830: B=2183 → 1353, A=6017 → 6847 [TX028] Transfer $442: A=6847 → 6405, B=1353 → 1795 [TX029] Transfer $462: A=6405 → 5943, B=1795 → 2257 [TX030] Transfer $455: B=2257 → 1802, A=5943 → 6398 [TX031] Transfer $35: B=1802 → 1767, A=6398 → 6433 [TX032] Transfer $907: A=6433 → 5526, B=1767 → 2674 [TX033] Transfer $443: A=5526 → 5083, B=2674 → 3117 [TX034] Transfer $734: A=5083 → 4349, B=3117 → 3851 [TX035] Transfer $784: B=3851 → 3067, A=4349 → 5133 [TX036] Transfer $677: A=5133 → 4456, B=3067 → 3744 [TX037] Transfer $577: B=3744 → 3167, A=4456 → 5033 [TX038] Transfer $402: A=5033 → 4631, B=3167 → 3569 [TX039] Transfer $607: B=3569 → 2962, A=4631 → 5238 [TX040] Transfer $786: B=2962 → 2176, A=5238 → 6024 [TX041] Transfer $64: B=2176 → 2112, A=6024 → 6088 [TX042] Transfer $133: A=6088 → 5955, B=2112 → 2245 [TX043] Transfer $830: B=2245 → 1415, A=5955 → 6785 [TX044] Transfer $391: A=6785 → 6394, B=1415 → 1806 [TX045] Transfer $355: A=6394 → 6039, B=1806 → 2161 [TX046] Transfer $361: B=2161 → 1800, A=6039 → 6400 [TX047] Transfer $255: A=6400 → 6145, B=1800 → 2055 [TX048] Transfer $608: A=6145 → 5537, B=2055 → 2663 [TX049] Transfer $5547: A=5537 → -10, B=2663 → 8210 [TX050] Balance check: A=-10 [TX051] Balance check: A=-10 [TX052] Transfer $473: B=8210 → 7737, A=-10 → 463 [TX053] Transfer $275: B=7737 → 7462, A=463 → 738 [TX054] Transfer $604: A=738 → 134, B=7462 → 8066 [TX055] Transfer $26: A=134 → 108, B=8066 → 8092 [TX056] Transfer $588: B=8092 → 7504, A=108 → 696 [TX057] Transfer $104: A=696 → 592, B=7504 → 7608 [TX058] Transfer $256: A=592 → 336, B=7608 → 7864 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX049	Account balance goes negative	NEGATIVE_BAL	58	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX049", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 58}
48	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $186: A=4000 → 3814, B=4200 → 4386 [TX002] Transfer $578: A=3814 → 3236, B=4386 → 4964 [TX003] Transfer $540: A=3236 → 2696, B=4964 → 5504 [TX004] Transfer $944: A=2696 → 1752, B=5504 → 6448 [TX005] Transfer $788: A=1752 → 964, B=6448 → 7236 [TX006] Transfer $910: B=7236 → 6326, A=964 → 1874 [TX007] Transfer $293: B=6326 → 6033, A=1874 → 2168 [TX008] Transfer $606: B=6033 → 5427, A=2167 → 2773 [TX009] Transfer $159: A=2773 → 2614, B=5427 → 5586 [TX010] Transfer $473: A=2614 → 2141, B=5586 → 6059 [TX011] Transfer $645: B=6059 → 5414, A=2141 → 2786 [TX012] Transfer $339: B=5414 → 5075, A=2786 → 3125 [TX013] Transfer $334: A=3125 → 2791, B=5075 → 5409 [TX014] Transfer $885: A=2791 → 1906, B=5409 → 6294 [TX015] Transfer $332: A=1906 → 1574, B=6294 → 6626 [TX016] Transfer $562: A=1574 → 1012, B=6626 → 7188 [TX017] Transfer $410: B=7188 → 6778, A=1012 → 1422 [TX018] Transfer $247: B=6778 → 6531, A=1422 → 1669 [TX019] Transfer $23: B=6531 → 6508, A=1669 → 1692 [TX020] Transfer $399: A=1692 → 1293, B=6508 → 6907 [TX021] Transfer $664: B=6907 → 6243, A=1293 → 1957 [TX022] Transfer $307: A=1957 → 1650, B=6243 → 6550 [TX023] Transfer $755: B=6550 → 5795, A=1650 → 2405 [TX024] Transfer $369: B=5795 → 5426, A=2405 → 2774 [TX025] Transfer $526: A=2774 → 2248, B=5426 → 5952 [TX026] Transfer $458: A=2248 → 1790, B=5952 → 6410 [TX027] Transfer $276: B=6410 → 6134, A=1790 → 2066 [TX028] Transfer $776: B=6134 → 5358, A=2066 → 2842 [TX029] Transfer $630: B=5358 → 4728, A=2842 → 3472 [TX030] Transfer $647: A=3472 → 2825, B=4728 → 5375 [TX031] Transfer $43: B=5375 → 5332, A=2825 → 2868 [TX032] Transfer $694: B=5332 → 4638, A=2868 → 3562 [TX033] Transfer $955: A=3562 → 2607, B=4638 → 5593 [TX034] Transfer $299: B=5593 → 5294, A=2607 → 2906 [TX035] Transfer $83: B=5294 → 5211, A=2906 → 2989 [TX036] Transfer $154: B=5211 → 5057, A=2989 → 3143 [TX037] Transfer $863: A=3143 → 2280, B=5057 → 5920 [TX038] Transfer $304: A=2280 → 1976, B=5920 → 6224 [TX039] Transfer $941: A=1976 → 1035, B=6224 → 7165 [TX040] Transfer $524: A=1035 → 511, B=7165 → 7689 [TX041] Transfer $98: B=7689 → 7591, A=511 → 609 [TX042] Transfer $365: B=7591 → 7226, A=609 → 974 [TX043] Transfer $789: B=7226 → 6437, A=974 → 1763 [TX044] Transfer $760: A=1763 → 1003, B=6437 → 7197 [TX045] Transfer $807: B=7197 → 6390, A=1003 → 1810 [TX046] Transfer $48: A=1810 → 1762, B=6390 → 6438 [TX047] Transfer $899: A=1762 → 863, B=6438 → 7337 [TX048] Transfer $603: B=7337 → 6734, A=863 → 1466 [TX049] Transfer $640: B=6734 → 6094, A=1466 → 2106 [TX050] Transfer $991: B=6094 → 5103, A=2106 → 3097 [TX051] Transfer $191: A=3097 → 2906, B=5103 → 5294 [TX052] Transfer $894: A=2906 → 2012, B=5294 → 6188 [TX053] Transfer $549: A=2012 → 1463, B=6188 → 6737 [TX054] Transfer $406: A=1463 → 1057, B=6737 → 7143 [TX055] Transfer $177: A=1057 → 880, B=7143 → 7320 [TX056] Transfer $710: B=7320 → 6610, A=880 → 1590 [TX057] Transfer $312: B=6610 → 6298, A=1590 → 1902 [TX058] Transfer $825: B=6298 → 5473, A=1902 → 2727 [TX059] Transfer $130: B=5473 → 5343, A=2727 → 2857 [TX060] Transfer $197: A=2857 → 2660, B=5343 → 5540 [TX061] Transfer $714: A=2660 → 1946, B=5540 → 6254 [TX062] Transfer $216: A=1946 → 1730, B=6254 → 6470 [TX063] Transfer $667: B=6470 → 5803, A=1730 → 2397 [TX064] Transfer $864: A=2397 → 1533, B=5803 → 6667 [TX065] Transfer $310: A=1533 → 1223, B=6667 → 6977 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX007	Mathematical calculation is incorrect	CALC_ERROR	65	{"bug_type": "CALC_ERROR", "bug_location": "TX007", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 65}
92	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $619: A=4000 → 3381, B=4200 → 4819 [TX002] Transfer $638: B=4819 → 4181, A=3381 → 4019 [TX003] Transfer $375: B=4181 → 3806, A=4019 → 4394 [TX004] Transfer $527: B=3806 → 3279, A=4394 → 4921 [TX005] Transfer $503: B=3279 → 2776, A=4921 → 5424 [TX006] Transfer $55: B=2776 → 2721, A=5424 → 5479 [TX007] Transfer $271: A=5479 → 5208, B=2721 → 2992 [TX008] Transfer $347: B=2992 → 2645, A=5208 → 5555 [TX009] Transfer $769: A=5555 → 4786, B=2645 → 3414 [TX010] Transfer $342: B=3414 → 3072, A=4786 → 5128 [TX011] Transfer $894: A=5128 → 4234, B=3072 → 3966 [TX012] Transfer $311: A=4234 → 3923, B=3966 → 4277 [TX013] Transfer $928: B=4277 → 3349, A=3923 → 4851 [TX014] Transfer $399: B=3349 → 2950, A=4851 → 5250 [TX015] Transfer $715: A=5250 → 4535, B=2950 → 3665 [TX016] Transfer $377: B=3665 → 3288, A=4535 → 4912 [TX017] Transfer $726: B=3288 → 2562, A=4912 → 5638 [TX018] Transfer $967: B=2562 → 1595, A=5638 → 6605 [TX019] Transfer $567: B=1595 → 1028, A=6605 → 7172 [TX020] Transfer $290: A=7172 → 6882, B=1028 → 1318 [TX021] Transfer $937: B=1318 → 381, A=6882 → 7819 [TX022] Transfer $165: B=381 → 216, A=7819 → 7984 [TX023] Transfer $832: A=7984 → 7152, B=216 → 1048 [TX024] Transfer $250: A=7152 → 6902, B=1048 → 1298 [TX025] Transfer $384: A=6902 → 6518, B=1298 → 1682 [TX026] Transfer $587: A=6518 → 5931, B=1682 → 2269 [TX027] Transfer $886: A=5931 → 5045, B=2269 → 3155 [TX028] Transfer $742: A=5045 → 4303, B=3155 → 3897 [TX029] Transfer $893: A=4303 → 3410, B=3897 → 4790 [TX030] Transfer $598: A=3410 → 2812, B=4790 → 5388 [TX031] Transfer $806: B=5388 → 4582, A=2812 → 3618 [TX032] Transfer $59: A=3618 → 3559, B=4582 → 4641 [TX033] Transfer $942: A=3559 → 2617, B=4641 → 5583 [TX034] Transfer $95: A=2617 → 2522, B=5583 → 5678 [TX035] Transfer $445: A=2522 → 2077, B=5678 → 6123 [TX036] Transfer $53: A=2077 → 2024, B=6123 → 6176 [TX037] Transfer $330: A=2024 → 1694, B=6176 → 6506 [TX038] Transfer $839: A=1694 → 855, B=6506 → 7345 [TX039] Transfer $621: A=855 → 234, B=7345 → 7966 [TX040] Transfer $75: A=234 → 159, B=7966 → 8041 [TX041] Transfer $13: A=159 → 146, B=8041 → 8054 [TX042] Transfer $13: A=146 → 133, B=8054 → 8067 [TX043] Transfer $11: A=133 → 122, B=8067 → 8078 [TX044] Transfer $4: A=122 → 118, B=8078 → 8082 [TX045] Transfer $12: A=118 → 106, B=8082 → 8094 [TX046] Transfer $5: A=106 → 101, B=8094 → 8099 [TX047] Transfer $520: B=8099 → 7579, A=101 → 621 [TX048] Transfer $438: B=7579 → 7141, A=621 → 1059 [TX049] Transfer $755: B=7141 → 6386, A=1059 → 1814 [TX050] Transfer $672: A=1814 → 1142, B=6386 → 7058 [TX051] Thread T1: READ B=7058 [TX052] Thread T2: READ B=7058 [TX053] Thread T1: COMMIT B=7058 → 6936 [TX054] Thread T2: COMMIT B=7058 → 6967 [TX055] Transfer $66: A=1142 → 1076, B=6967 → 7033 [TX056] Transfer $926: B=7033 → 6107, A=1076 → 2002 [TX057] Transfer $83: A=2002 → 1919, B=6107 → 6190 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX054	Thread T2 overwrites T1's change	LOST_UPDATE	57	{"bug_type": "LOST_UPDATE", "bug_location": "TX054", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 57}
76	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $402: B=4200 → 3798, A=4000 → 4402 [TX002] Transfer $410: B=3798 → 3388, A=4402 → 4812 [TX003] Transfer $276: B=3388 → 3112, A=4812 → 5088 [TX004] Transfer $349: B=3112 → 2763, A=5088 → 5437 [TX005] Transfer $460: A=5437 → 4977, B=2763 → 3223 [TX006] Transfer $588: B=3223 → 2635, A=4977 → 5565 [TX007] Transfer $800: A=5565 → 4765, B=2635 → 3435 [TX008] Transfer $134: A=4765 → 4631, B=3435 → 3569 [TX009] Transfer $823: A=4631 → 3808, B=3569 → 4392 [TX010] Transfer $801: B=4392 → 3591, A=3808 → 4609 [TX011] Transfer $787: B=3591 → 2804, A=4609 → 5396 [TX012] Transfer $533: A=5396 → 4863, B=2804 → 3337 [TX013] Transfer $550: A=4863 → 4313, B=3337 → 3887 [TX014] Transfer $860: A=4313 → 3453, B=3887 → 4747 [TX015] Transfer $299: B=4747 → 4448, A=3453 → 3752 [TX016] Transfer $341: A=3752 → 3411, B=4448 → 4789 [TX017] Transfer $568: B=4789 → 4221, A=3411 → 3979 [TX018] Transfer $38: A=3979 → 3941, B=4221 → 4259 [TX019] Transfer $515: A=3941 → 3426, B=4259 → 4774 [TX020] Transfer $45: B=4774 → 4729, A=3426 → 3471 [TX021] Transfer $310: A=3471 → 3161, B=4729 → 5039 [TX022] Transfer $648: A=3161 → 2513, B=5039 → 5687 [TX023] Transfer $280: A=2513 → 2233, B=5687 → 5967 [TX024] Transfer $673: A=2233 → 1560, B=5967 → 6640 [TX025] Transfer $839: B=6640 → 5801, A=1560 → 2399 [TX026] Transfer $80: B=5801 → 5721, A=2399 → 2479 [TX027] Transfer $22: A=2479 → 2457, B=5721 → 5743 [TX028] Transfer $99: A=2457 → 2358, B=5743 → 5842 [TX029] Transfer $853: B=5842 → 4989, A=2358 → 3211 [TX030] Transfer $437: B=4989 → 4552, A=3211 → 3648 [TX031] Transfer $282: A=3648 → 3366, B=4552 → 4834 [TX032] Transfer $104: B=4834 → 4730, A=3366 → 3470 [TX033] Transfer $387: B=4730 → 4343, A=3470 → 3857 [TX034] Transfer $97: B=4343 → 4246, A=3857 → 3954 [TX035] Transfer $576: A=3954 → 3378, B=4246 → 4822 [TX036] Transfer $293: B=4822 → 4529, A=3378 → 3671 [TX037] Transfer $19: A=3671 → 3652, B=4529 → 4548 [TX038] Transfer $976: B=4548 → 3572, A=3652 → 4628 [TX039] Transfer $465: B=3572 → 3107, A=4628 → 5093 [TX040] Transfer $408: A=5093 → 4685, B=3107 → 3515 [TX041] Transfer $380: A=4685 → 4305, B=3515 → 3895 [TX042] Transfer $660: B=3895 → 3235, A=4305 → 4965 [TX043] Transfer $149: B=3235 → 3086, A=4965 → 5114 [TX044] Transfer $576: A=5114 → 4538, B=3086 → 3662 [TX045] Transfer $4554: A=4538 → -16, B=3662 → 8216 [TX046] Balance check: A=-16 [TX047] Balance check: A=-16 [TX048] Transfer $62: B=8216 → 8154, A=-16 → 46 [TX049] Transfer $423: B=8154 → 7731, A=46 → 469 [TX050] Transfer $856: B=7731 → 6875, A=469 → 1325 [TX051] Transfer $331: A=1325 → 994, B=6875 → 7206 [TX052] Transfer $276: B=7206 → 6930, A=994 → 1270 [TX053] Transfer $560: A=1270 → 710, B=6930 → 7490 [TX054] Transfer $984: B=7490 → 6506, A=710 → 1694 [TX055] Transfer $474: A=1694 → 1220, B=6506 → 6980 [TX056] Transfer $945: B=6980 → 6035, A=1220 → 2165 [TX057] Transfer $718: A=2165 → 1447, B=6035 → 6753 [TX058] Transfer $132: A=1447 → 1315, B=6753 → 6885 [TX059] Transfer $534: A=1315 → 781, B=6885 → 7419 [TX060] Transfer $204: A=781 → 577, B=7419 → 7623 [TX061] Transfer $41: B=7623 → 7582, A=577 → 618 [TX062] Transfer $176: B=7582 → 7406, A=618 → 794 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX045	Account balance goes negative	NEGATIVE_BAL	62	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX045", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 62}
37	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $937: A=4000 → 3063, B=4200 → 5137 [TX002] Transfer $520: A=3063 → 2543, B=5137 → 5657 [TX003] Transfer $928: A=2543 → 1615, B=5657 → 6585 [TX004] Transfer $350: A=1615 → 1265, B=6585 → 6935 [TX005] Transfer $796: B=6935 → 6139, A=1265 → 2061 [TX006] Transfer $789: B=6139 → 5350, A=2061 → 2850 [TX007] Transfer $212: A=2850 → 2638, B=5350 → 5562 [TX008] Transfer $398: A=2638 → 2240, B=5562 → 5960 [TX009] Transfer $320: A=2240 → 1920, B=5960 → 6280 [TX010] Transfer $343: A=1920 → 1577, B=6280 → 6623 [TX011] Transfer $107: B=6623 → 6516, A=1577 → 1684 [TX012] Transfer $593: B=6516 → 5923, A=1684 → 2277 [TX013] Transfer $330: B=5923 → 5593, A=2277 → 2607 [TX014] Transfer $295: A=2607 → 2312, B=5593 → 5888 [TX015] Transfer $793: B=5888 → 5095, A=2312 → 3105 [TX016] Transfer $281: B=5095 → 4814, A=3105 → 3386 [TX017] Transfer $282: A=3386 → 3104, B=4814 → 5096 [TX018] Transfer $983: A=3104 → 2121, B=5096 → 6079 [TX019] Transfer $557: A=2121 → 1564, B=6079 → 6636 [TX020] Transfer $279: B=6636 → 6357, A=1564 → 1843 [TX021] Transfer $589: A=1843 → 1254, B=6357 → 6946 [TX022] Transfer $74: A=1254 → 1180, B=6946 → 7020 [TX023] Transfer $555: B=7020 → 6465, A=1180 → 1735 [TX024] Transfer $135: B=6465 → 6330, A=1735 → 1870 [TX025] Transfer $926: A=1870 → 944, B=6330 → 7257 [TX026] Transfer $57: A=944 → 887, B=7256 → 7313 [TX027] Transfer $403: A=887 → 484, B=7313 → 7716 [TX028] Transfer $317: A=484 → 167, B=7716 → 8033 [TX029] Transfer $342: B=8033 → 7691, A=167 → 509 [TX030] Transfer $388: A=509 → 121, B=7691 → 8079 [TX031] Transfer $97: B=8079 → 7982, A=121 → 218 [TX032] Transfer $468: B=7982 → 7514, A=218 → 686 [TX033] Transfer $483: B=7514 → 7031, A=686 → 1169 [TX034] Transfer $149: A=1169 → 1020, B=7031 → 7180 [TX035] Transfer $403: B=7180 → 6777, A=1020 → 1423 [TX036] Transfer $809: A=1423 → 614, B=6777 → 7586 [TX037] Transfer $501: B=7586 → 7085, A=614 → 1115 [TX038] Transfer $488: A=1115 → 627, B=7085 → 7573 [TX039] Transfer $492: A=627 → 135, B=7573 → 8065 [TX040] Transfer $291: B=8065 → 7774, A=135 → 426 [TX041] Transfer $522: B=7774 → 7252, A=426 → 948 [TX042] Transfer $839: A=948 → 109, B=7252 → 8091 [TX043] Transfer $3: A=109 → 106, B=8091 → 8094 [TX044] Transfer $412: B=8094 → 7682, A=106 → 518 [TX045] Transfer $637: B=7682 → 7045, A=518 → 1155 [TX046] Transfer $999: A=1155 → 156, B=7045 → 8044 [TX047] Transfer $69: B=8044 → 7975, A=156 → 225 [TX048] Transfer $835: B=7975 → 7140, A=225 → 1060 [TX049] Transfer $582: B=7140 → 6558, A=1060 → 1642 [TX050] Transfer $179: B=6558 → 6379, A=1642 → 1821 [TX051] Transfer $119: A=1821 → 1702, B=6379 → 6498 [TX052] Transfer $570: B=6498 → 5928, A=1702 → 2272 [TX053] Transfer $182: A=2272 → 2090, B=5928 → 6110 [TX054] Transfer $73: B=6110 → 6037, A=2090 → 2163 [TX055] Transfer $337: A=2163 → 1826, B=6037 → 6374 [TX056] Transfer $94: B=6374 → 6280, A=1826 → 1920 [TX057] Transfer $910: A=1920 → 1010, B=6280 → 7190 [TX058] Transfer $678: A=1010 → 332, B=7190 → 7868 [TX059] Transfer $138: A=332 → 194, B=7868 → 8006 [TX060] Transfer $632: B=8006 → 7374, A=194 → 826 [TX061] Transfer $212: B=7374 → 7162, A=826 → 1038 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX025	Mathematical calculation is incorrect	CALC_ERROR	61	{"bug_type": "CALC_ERROR", "bug_location": "TX025", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 61}
30	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $872: A=4000 → 3128, B=4200 → 5072 [TX002] Transfer $36: B=5072 → 5036, A=3128 → 3164 [TX003] Transfer $692: A=3164 → 2472, B=5036 → 5728 [TX004] Transfer $246: A=2472 → 2226, B=5728 → 5974 [TX005] Transfer $90: A=2226 → 2136, B=5974 → 6064 [TX006] Transfer $363: B=6064 → 5701, A=2136 → 2499 [TX007] Transfer $602: B=5701 → 5099, A=2499 → 3101 [TX008] Transfer $756: A=3101 → 2345, B=5099 → 5855 [TX009] Transfer $564: A=2345 → 1781, B=5855 → 6419 [TX010] Transfer $357: B=6419 → 6062, A=1781 → 2138 [TX011] Transfer $622: B=6062 → 5440, A=2138 → 2760 [TX012] Transfer $954: A=2760 → 1806, B=5440 → 6394 [TX013] Transfer $269: B=6394 → 6125, A=1806 → 2075 [TX014] Transfer $520: A=2075 → 1555, B=6125 → 6645 [TX015] Transfer $517: A=1555 → 1038, B=6645 → 7162 [TX016] Transfer $971: B=7162 → 6191, A=1038 → 2009 [TX017] Transfer $899: A=2009 → 1110, B=6191 → 7090 [TX018] Transfer $991: B=7090 → 6099, A=1110 → 2101 [TX019] Transfer $790: B=6099 → 5309, A=2101 → 2891 [TX020] Transfer $986: A=2891 → 1905, B=5309 → 6295 [TX021] Transfer $920: B=6295 → 5375, A=1905 → 2825 [TX022] Transfer $121: A=2825 → 2704, B=5375 → 5496 [TX023] Transfer $393: B=5496 → 5103, A=2704 → 3097 [TX024] Transfer $821: A=3097 → 2276, B=5103 → 5924 [TX025] Transfer $980: B=5924 → 4944, A=2276 → 3256 [TX026] Transfer $719: B=4944 → 4225, A=3256 → 3975 [TX027] Transfer $296: B=4225 → 3929, A=3975 → 4271 [TX028] Transfer $691: A=4271 → 3580, B=3929 → 4620 [TX029] Transfer $569: B=4620 → 4051, A=3580 → 4149 [TX030] Transfer $323: A=4149 → 3826, B=4051 → 4374 [TX031] Transfer $917: B=4374 → 3457, A=3826 → 4743 [TX032] Payment PAY1008: Transfer $971: B=3457 → 2486, A=4743 → 5714 [TX033] Transfer $756: A=5714 → 4958, B=2486 → 3242 [TX034] Transfer $755: A=4958 → 4203, B=3242 → 3997 [TX035] Transfer $213: A=4203 → 3990, B=3997 → 4210 [TX036] Transfer $856: A=3990 → 3134, B=4210 → 5066 [TX037] Transfer $161: A=3134 → 2973, B=5066 → 5227 [TX038] Transfer $944: A=2973 → 2029, B=5227 → 6171 [TX039] Transfer $630: A=2029 → 1399, B=6171 → 6801 [TX040] Transfer $870: A=1399 → 529, B=6801 → 7671 [TX041] Transfer $637: B=7671 → 7034, A=529 → 1166 [TX042] Transfer $921: B=7034 → 6113, A=1166 → 2087 [TX043] Transfer $189: B=6113 → 5924, A=2087 → 2276 [TX044] Transfer $229: B=5924 → 5695, A=2276 → 2505 [TX045] Transfer $540: A=2505 → 1965, B=5695 → 6235 [TX046] Transfer $964: B=6235 → 5271, A=1965 → 2929 [TX047] Transfer $405: A=2929 → 2524, B=5271 → 5676 [TX048] Transfer $125: A=2524 → 2399, B=5676 → 5801 [TX049] Transfer $707: B=5801 → 5094, A=2399 → 3106 [TX050] Transfer $692: A=3106 → 2414, B=5094 → 5786 [TX051] Transfer $596: A=2414 → 1818, B=5786 → 6382 [TX052] Transfer $372: A=1818 → 1446, B=6382 → 6754 [TX053] Transfer $563: B=6754 → 6191, A=1446 → 2009 [TX054] Transfer $277: B=6191 → 5914, A=2009 → 2286 [TX055] Transfer $376: B=5914 → 5538, A=2286 → 2662 [TX056] Transfer $436: A=2662 → 2226, B=5538 → 5974 [TX057] Transfer $719: A=2226 → 1507, B=5974 → 6693 [TX058] Transfer $876: B=6693 → 5817, A=1507 → 2383 [TX059] Transfer $463: B=5817 → 5354, A=2383 → 2846 [TX060] Transfer $591: A=2846 → 2255, B=5354 → 5945 [TX061] Payment PAY1008: Transfer $971: B=5945 → 4974, A=2255 → 3226 [TX062] Transfer $740: A=3226 → 2486, B=4974 → 5714 [TX063] Transfer $570: B=5714 → 5144, A=2486 → 3056 [TX064] Transfer $202: B=5144 → 4942, A=3056 → 3258 [TX065] Transfer $486: A=3258 → 2772, B=4942 → 5428 [TX066] Transfer $433: A=2772 → 2339, B=5428 → 5861 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX061	Payment PAY1008 processed twice	DUPLICATE_TXN	66	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX061", "explanation": "Payment PAY1008 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 66}
21	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $300: A=4000 → 3700, B=4200 → 4500 [TX002] Transfer $950: B=4500 → 3550, A=3700 → 4650 [TX003] Transfer $327: B=3550 → 3223, A=4650 → 4977 [TX004] Transfer $241: B=3223 → 2982, A=4977 → 5218 [TX005] Transfer $141: A=5218 → 5077, B=2982 → 3123 [TX006] Transfer $110: A=5077 → 4967, B=3123 → 3233 [TX007] Transfer $479: A=4967 → 4488, B=3233 → 3712 [TX008] Transfer $125: B=3712 → 3587, A=4488 → 4613 [TX009] Transfer $464: B=3587 → 3123, A=4613 → 5077 [TX010] Transfer $273: B=3123 → 2850, A=5077 → 5350 [TX011] Transfer $163: A=5350 → 5187, B=2850 → 3013 [TX012] Transfer $222: B=3013 → 2791, A=5187 → 5409 [TX013] Transfer $95: B=2791 → 2696, A=5409 → 5504 [TX014] Transfer $407: A=5504 → 5097, B=2696 → 3103 [TX015] Transfer $268: A=5097 → 4829, B=3103 → 3371 [TX016] Transfer $976: A=4829 → 3853, B=3371 → 4347 [TX017] Transfer $571: B=4347 → 3776, A=3853 → 4424 [TX018] Transfer $475: A=4424 → 3949, B=3776 → 4251 [TX019] Transfer $126: A=3949 → 3823, B=4251 → 4377 [TX020] Transfer $852: A=3823 → 2971, B=4377 → 5229 [TX021] Transfer $204: A=2971 → 2767, B=5229 → 5433 [TX022] Transfer $704: B=5433 → 4729, A=2767 → 3471 [TX023] Transfer $941: A=3471 → 2530, B=4729 → 5670 [TX024] Transfer $68: A=2530 → 2462, B=5670 → 5738 [TX025] Transfer $830: A=2462 → 1632, B=5738 → 6568 [TX026] Transfer $928: A=1632 → 704, B=6568 → 7496 [TX027] Transfer $45: B=7496 → 7451, A=704 → 749 [TX028] Thread T1: READ B=7451 [TX029] Thread T2: READ B=7451 [TX030] Thread T1: COMMIT B=7451 → 7389 [TX031] Thread T2: COMMIT B=7451 → 7358 [TX032] Transfer $510: B=7358 → 6848, A=749 → 1259 [TX033] Transfer $701: A=1259 → 558, B=6848 → 7549 [TX034] Transfer $364: B=7549 → 7185, A=558 → 922 [TX035] Transfer $283: A=922 → 639, B=7185 → 7468 [TX036] Transfer $906: B=7468 → 6562, A=639 → 1545 [TX037] Transfer $630: A=1545 → 915, B=6562 → 7192 [TX038] Transfer $512: A=915 → 403, B=7192 → 7704 [TX039] Transfer $64: B=7704 → 7640, A=403 → 467 [TX040] Transfer $198: A=467 → 269, B=7640 → 7838 [TX041] Transfer $53: A=269 → 216, B=7838 → 7891 [TX042] Transfer $50: A=216 → 166, B=7891 → 7941 [TX043] Transfer $559: B=7941 → 7382, A=166 → 725 [TX044] Transfer $936: B=7382 → 6446, A=725 → 1661 [TX045] Transfer $278: B=6446 → 6168, A=1661 → 1939 [TX046] Transfer $328: A=1939 → 1611, B=6168 → 6496 [TX047] Transfer $919: A=1611 → 692, B=6496 → 7415 [TX048] Transfer $830: B=7415 → 6585, A=692 → 1522 [TX049] Transfer $787: B=6585 → 5798, A=1522 → 2309 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX031	Thread T2 overwrites T1's change	LOST_UPDATE	49	{"bug_type": "LOST_UPDATE", "bug_location": "TX031", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 49}
32	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $240: B=4200 → 3960, A=4000 → 4240 [TX002] Transfer $17: A=4240 → 4223, B=3960 → 3977 [TX003] Transfer $352: B=3977 → 3625, A=4223 → 4575 [TX004] Transfer $806: B=3625 → 2819, A=4575 → 5381 [TX005] Transfer $476: B=2819 → 2343, A=5381 → 5857 [TX006] Transfer $84: A=5857 → 5773, B=2343 → 2427 [TX007] Transfer $274: A=5773 → 5499, B=2427 → 2701 [TX008] Transfer $558: B=2701 → 2143, A=5499 → 6057 [TX009] Transfer $198: B=2143 → 1945, A=6057 → 6255 [TX010] Transfer $1946: B=1945 → -1, A=6255 → 8201 [TX011] Transfer $396: A=8201 → 7805, B=-1 → 395 [TX012] Transfer $19: B=395 → 376, A=7805 → 7824 [TX013] Transfer $754: A=7824 → 7070, B=376 → 1130 [TX014] Transfer $486: A=7070 → 6584, B=1130 → 1616 [TX015] Transfer $960: B=1616 → 656, A=6584 → 7544 [TX016] Transfer $45: B=656 → 611, A=7544 → 7589 [TX017] Transfer $494: A=7589 → 7095, B=611 → 1105 [TX018] Transfer $371: B=1105 → 734, A=7095 → 7466 [TX019] Transfer $998: A=7466 → 6468, B=734 → 1732 [TX020] Transfer $650: A=6468 → 5818, B=1732 → 2382 [TX021] Transfer $17: B=2382 → 2365, A=5818 → 5835 [TX022] Transfer $600: A=5835 → 5235, B=2365 → 2965 [TX023] Transfer $810: A=5235 → 4425, B=2965 → 3775 [TX024] Transfer $994: A=4425 → 3431, B=3775 → 4769 [TX025] Transfer $706: A=3431 → 2725, B=4769 → 5475 [TX026] Transfer $791: A=2725 → 1934, B=5475 → 6266 [TX027] Transfer $163: A=1934 → 1771, B=6266 → 6429 [TX028] Transfer $704: B=6429 → 5725, A=1771 → 2475 [TX029] Transfer $63: B=5725 → 5662, A=2475 → 2538 [TX030] Transfer $720: B=5662 → 4942, A=2538 → 3258 [TX031] Transfer $501: A=3258 → 2757, B=4942 → 5443 [TX032] Transfer $573: A=2757 → 2184, B=5443 → 6016 [TX033] Transfer $752: B=6016 → 5264, A=2184 → 2936 [TX034] Transfer $707: A=2936 → 2229, B=5264 → 5971 [TX035] Transfer $743: B=5971 → 5228, A=2229 → 2972 [TX036] Transfer $922: A=2972 → 2050, B=5228 → 6150 [TX037] Transfer $725: A=2050 → 1325, B=6150 → 6875 [TX038] Transfer $557: B=6875 → 6318, A=1325 → 1882 [TX039] Transfer $582: B=6318 → 5736, A=1882 → 2464 [TX040] Transfer $333: A=2464 → 2131, B=5736 → 6069 [TX041] Transfer $890: B=6069 → 5179, A=2131 → 3021 [TX042] Transfer $545: A=3021 → 2476, B=5179 → 5724 [TX043] Transfer $304: A=2476 → 2172, B=5724 → 6028 [TX044] Transfer $466: B=6028 → 5562, A=2172 → 2638 [TX045] Transfer $753: A=2638 → 1885, B=5562 → 6315 [TX046] Transfer $636: A=1885 → 1249, B=6315 → 6951 [TX047] Transfer $330: B=6951 → 6621, A=1249 → 1579 [TX048] Transfer $196: A=1579 → 1383, B=6621 → 6817 [TX049] Transfer $629: B=6817 → 6188, A=1383 → 2012 [TX050] Transfer $421: B=6188 → 5767, A=2012 → 2433 [TX051] Transfer $100: B=5767 → 5667, A=2433 → 2533 [TX052] Transfer $857: A=2533 → 1676, B=5667 → 6524 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX010	Account balance goes negative	NEGATIVE_BAL	52	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX010", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 52}
96	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $708: A=4000 → 3292, B=4200 → 4908 [TX002] Transfer $667: B=4908 → 4241, A=3292 → 3959 [TX003] Transfer $574: A=3959 → 3385, B=4241 → 4815 [TX004] Transfer $734: B=4815 → 4081, A=3385 → 4119 [TX005] Transfer $374: A=4119 → 3745, B=4081 → 4455 [TX006] Transfer $469: A=3745 → 3276, B=4455 → 4924 [TX007] Transfer $384: B=4924 → 4540, A=3276 → 3660 [TX008] Transfer $330: B=4540 → 4210, A=3660 → 3990 [TX009] Transfer $180: B=4210 → 4030, A=3990 → 4170 [TX010] Transfer $480: B=4030 → 3550, A=4170 → 4650 [TX011] Transfer $153: B=3550 → 3397, A=4650 → 4803 [TX012] Transfer $370: B=3397 → 3027, A=4803 → 5173 [TX013] Transfer $618: B=3027 → 2409, A=5173 → 5791 [TX014] Transfer $342: B=2409 → 2067, A=5791 → 6133 [TX015] Transfer $463: B=2067 → 1604, A=6133 → 6596 [TX016] Transfer $353: A=6596 → 6243, B=1604 → 1957 [TX017] Transfer $555: A=6243 → 5688, B=1957 → 2512 [TX018] Transfer $837: A=5688 → 4851, B=2512 → 3349 [TX019] Transfer $85: A=4851 → 4766, B=3349 → 3432 [TX020] Transfer $534: A=4766 → 4232, B=3434 → 3968 [TX021] Transfer $262: A=4232 → 3970, B=3968 → 4230 [TX022] Transfer $702: A=3970 → 3268, B=4230 → 4932 [TX023] Transfer $121: B=4932 → 4811, A=3268 → 3389 [TX024] Transfer $563: B=4811 → 4248, A=3389 → 3952 [TX025] Transfer $226: B=4248 → 4022, A=3952 → 4178 [TX026] Transfer $706: B=4022 → 3316, A=4178 → 4884 [TX027] Transfer $657: A=4884 → 4227, B=3316 → 3973 [TX028] Transfer $856: B=3973 → 3117, A=4227 → 5083 [TX029] Transfer $916: A=5083 → 4167, B=3117 → 4033 [TX030] Transfer $149: A=4167 → 4018, B=4033 → 4182 [TX031] Transfer $249: A=4018 → 3769, B=4182 → 4431 [TX032] Transfer $847: B=4431 → 3584, A=3769 → 4616 [TX033] Transfer $976: A=4616 → 3640, B=3584 → 4560 [TX034] Transfer $18: A=3640 → 3622, B=4560 → 4578 [TX035] Transfer $125: A=3622 → 3497, B=4578 → 4703 [TX036] Transfer $849: A=3497 → 2648, B=4703 → 5552 [TX037] Transfer $261: A=2648 → 2387, B=5552 → 5813 [TX038] Transfer $434: B=5813 → 5379, A=2387 → 2821 [TX039] Transfer $12: B=5379 → 5367, A=2821 → 2833 [TX040] Transfer $399: B=5367 → 4968, A=2833 → 3232 [TX041] Transfer $313: B=4968 → 4655, A=3232 → 3545 [TX042] Transfer $652: B=4655 → 4003, A=3545 → 4197 [TX043] Transfer $34: A=4197 → 4163, B=4003 → 4037 [TX044] Transfer $361: B=4037 → 3676, A=4163 → 4524 [TX045] Transfer $719: A=4524 → 3805, B=3676 → 4395 [TX046] Transfer $772: B=4395 → 3623, A=3805 → 4577 [TX047] Transfer $707: A=4577 → 3870, B=3623 → 4330 [TX048] Transfer $29: B=4330 → 4301, A=3870 → 3899 [TX049] Transfer $987: B=4301 → 3314, A=3899 → 4886 [TX050] Transfer $488: B=3314 → 2826, A=4886 → 5374 [TX051] Transfer $86: B=2826 → 2740, A=5374 → 5460 [TX052] Transfer $467: A=5460 → 4993, B=2740 → 3207 [TX053] Transfer $249: B=3207 → 2958, A=4993 → 5242 [TX054] Transfer $332: B=2958 → 2626, A=5242 → 5574 [TX055] Transfer $223: B=2626 → 2403, A=5574 → 5797 [TX056] Transfer $12: B=2403 → 2391, A=5797 → 5809 [TX057] Transfer $959: A=5809 → 4850, B=2391 → 3350 [TX058] Transfer $516: B=3350 → 2834, A=4850 → 5366 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX019	Mathematical calculation is incorrect	CALC_ERROR	58	{"bug_type": "CALC_ERROR", "bug_location": "TX019", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 58}
80	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $350: B=4200 → 3850, A=4000 → 4350 [TX002] Transfer $938: A=4350 → 3412, B=3850 → 4788 [TX003] Transfer $143: A=3412 → 3269, B=4788 → 4931 [TX004] Transfer $47: B=4931 → 4884, A=3269 → 3316 [TX005] Transfer $447: A=3316 → 2869, B=4884 → 5331 [TX006] Transfer $395: A=2869 → 2474, B=5331 → 5726 [TX007] Transfer $156: A=2474 → 2318, B=5726 → 5882 [TX008] Transfer $398: B=5882 → 5484, A=2318 → 2716 [TX009] Transfer $269: B=5484 → 5215, A=2716 → 2985 [TX010] Transfer $169: B=5215 → 5046, A=2985 → 3154 [TX011] Transfer $478: B=5046 → 4568, A=3154 → 3632 [TX012] Transfer $704: A=3632 → 2928, B=4568 → 5272 [TX013] Transfer $824: A=2928 → 2104, B=5272 → 6096 [TX014] Transfer $328: A=2104 → 1776, B=6096 → 6424 [TX015] Transfer $704: A=1776 → 1072, B=6424 → 7128 [TX016] Transfer $499: B=7128 → 6629, A=1072 → 1571 [TX017] Transfer $791: B=6629 → 5838, A=1571 → 2363 [TX018] Transfer $266: B=5838 → 5572, A=2362 → 2628 [TX019] Transfer $516: A=2628 → 2112, B=5572 → 6088 [TX020] Transfer $731: B=6088 → 5357, A=2112 → 2843 [TX021] Transfer $116: B=5357 → 5241, A=2843 → 2959 [TX022] Transfer $546: A=2959 → 2413, B=5241 → 5787 [TX023] Transfer $155: B=5787 → 5632, A=2413 → 2568 [TX024] Transfer $972: A=2568 → 1596, B=5632 → 6604 [TX025] Transfer $529: B=6604 → 6075, A=1596 → 2125 [TX026] Transfer $51: B=6075 → 6024, A=2125 → 2176 [TX027] Transfer $42: B=6024 → 5982, A=2176 → 2218 [TX028] Transfer $473: A=2218 → 1745, B=5982 → 6455 [TX029] Transfer $912: B=6455 → 5543, A=1745 → 2657 [TX030] Transfer $437: B=5543 → 5106, A=2657 → 3094 [TX031] Transfer $787: B=5106 → 4319, A=3094 → 3881 [TX032] Transfer $185: A=3881 → 3696, B=4319 → 4504 [TX033] Transfer $429: B=4504 → 4075, A=3696 → 4125 [TX034] Transfer $334: A=4125 → 3791, B=4075 → 4409 [TX035] Transfer $612: B=4409 → 3797, A=3791 → 4403 [TX036] Transfer $751: A=4403 → 3652, B=3797 → 4548 [TX037] Transfer $256: A=3652 → 3396, B=4548 → 4804 [TX038] Transfer $549: A=3396 → 2847, B=4804 → 5353 [TX039] Transfer $746: A=2847 → 2101, B=5353 → 6099 [TX040] Transfer $443: A=2101 → 1658, B=6099 → 6542 [TX041] Transfer $997: B=6542 → 5545, A=1658 → 2655 [TX042] Transfer $942: B=5545 → 4603, A=2655 → 3597 [TX043] Transfer $80: B=4603 → 4523, A=3597 → 3677 [TX044] Transfer $41: B=4523 → 4482, A=3677 → 3718 [TX045] Transfer $393: A=3718 → 3325, B=4482 → 4875 [TX046] Transfer $951: A=3325 → 2374, B=4875 → 5826 [TX047] Transfer $412: B=5826 → 5414, A=2374 → 2786 [TX048] Transfer $975: A=2786 → 1811, B=5414 → 6389 [TX049] Transfer $858: B=6389 → 5531, A=1811 → 2669 [TX050] Transfer $814: B=5531 → 4717, A=2669 → 3483 [TX051] Transfer $312: A=3483 → 3171, B=4717 → 5029 [TX052] Transfer $385: A=3171 → 2786, B=5029 → 5414 [TX053] Transfer $780: B=5414 → 4634, A=2786 → 3566 [TX054] Transfer $766: B=4634 → 3868, A=3566 → 4332 [TX055] Transfer $515: A=4332 → 3817, B=3868 → 4383 [TX056] Transfer $933: A=3817 → 2884, B=4383 → 5316 [TX057] Transfer $281: A=2884 → 2603, B=5316 → 5597 [TX058] Transfer $214: A=2603 → 2389, B=5597 → 5811 [TX059] Transfer $674: A=2389 → 1715, B=5811 → 6485 [TX060] Transfer $275: A=1715 → 1440, B=6485 → 6760 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX017	Mathematical calculation is incorrect	CALC_ERROR	60	{"bug_type": "CALC_ERROR", "bug_location": "TX017", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 60}
49	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $121: B=4200 → 4079, A=4000 → 4121 [TX002] Transfer $758: A=4121 → 3363, B=4079 → 4837 [TX003] Transfer $484: B=4837 → 4353, A=3363 → 3847 [TX004] Transfer $601: A=3847 → 3246, B=4353 → 4954 [TX005] Transfer $303: A=3246 → 2943, B=4954 → 5257 [TX006] Transfer $343: B=5257 → 4914, A=2943 → 3286 [TX007] Transfer $647: A=3286 → 2639, B=4914 → 5561 [TX008] Transfer $870: B=5561 → 4691, A=2639 → 3509 [TX009] Transfer $39: B=4691 → 4652, A=3509 → 3548 [TX010] Transfer $499: B=4652 → 4153, A=3548 → 4047 [TX011] Transfer $733: B=4153 → 3420, A=4047 → 4780 [TX012] Transfer $434: A=4780 → 4346, B=3420 → 3854 [TX013] Transfer $276: B=3854 → 3578, A=4346 → 4622 [TX014] Transfer $121: B=3578 → 3457, A=4622 → 4743 [TX015] Transfer $461: B=3457 → 2996, A=4743 → 5204 [TX016] Transfer $167: B=2996 → 2829, A=5204 → 5371 [TX017] Transfer $482: B=2829 → 2347, A=5371 → 5853 [TX018] Transfer $239: B=2347 → 2108, A=5853 → 6092 [TX019] Transfer $945: A=6092 → 5147, B=2108 → 3053 [TX020] Transfer $906: B=3053 → 2147, A=5147 → 6053 [TX021] Transfer $984: B=2147 → 1163, A=6053 → 7037 [TX022] Transfer $817: B=1163 → 346, A=7037 → 7854 [TX023] Transfer $161: B=346 → 185, A=7854 → 8015 [TX024] Transfer $709: A=8015 → 7306, B=185 → 894 [TX025] Transfer $134: A=7306 → 7172, B=894 → 1028 [TX026] Transfer $162: A=7172 → 7010, B=1028 → 1190 [TX027] Transfer $814: B=1190 → 376, A=7010 → 7824 [TX028] Transfer $157: B=376 → 219, A=7824 → 7981 [TX029] Transfer $572: A=7981 → 7409, B=219 → 791 [TX030] Transfer $369: A=7409 → 7040, B=791 → 1160 [TX031] Transfer $695: B=1160 → 465, A=7040 → 7735 [TX032] Transfer $7752: A=7735 → -17, B=465 → 8217 [TX033] Balance check: A=-17 [TX034] Transfer $118: B=8217 → 8099, A=-17 → 101 [TX035] Balance check: A=101 [TX036] Balance check: A=101 [TX037] Transfer $805: B=8099 → 7294, A=101 → 906 [TX038] Transfer $790: B=7294 → 6504, A=906 → 1696 [TX039] Transfer $875: B=6504 → 5629, A=1696 → 2571 [TX040] Transfer $950: A=2571 → 1621, B=5629 → 6579 [TX041] Transfer $987: B=6579 → 5592, A=1621 → 2608 [TX042] Transfer $802: A=2608 → 1806, B=5592 → 6394 [TX043] Transfer $521: A=1806 → 1285, B=6394 → 6915 [TX044] Transfer $647: A=1285 → 638, B=6915 → 7562 [TX045] Transfer $372: A=638 → 266, B=7562 → 7934 [TX046] Transfer $115: A=266 → 151, B=7934 → 8049 [TX047] Transfer $159: B=8049 → 7890, A=151 → 310 [TX048] Transfer $840: B=7890 → 7050, A=310 → 1150 [TX049] Transfer $870: A=1150 → 280, B=7050 → 7920 [TX050] Transfer $108: A=280 → 172, B=7920 → 8028 [TX051] Transfer $62: A=172 → 110, B=8028 → 8090 [TX052] Transfer $519: B=8090 → 7571, A=110 → 629 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX032	Account balance goes negative	NEGATIVE_BAL	52	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX032", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 52}
83	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $635: B=4200 → 3565, A=4000 → 4635 [TX002] Transfer $661: A=4635 → 3974, B=3565 → 4226 [TX003] Transfer $537: A=3974 → 3437, B=4226 → 4763 [TX004] Transfer $888: B=4763 → 3875, A=3437 → 4325 [TX005] Transfer $893: B=3875 → 2982, A=4325 → 5218 [TX006] Transfer $497: B=2982 → 2485, A=5218 → 5715 [TX007] Transfer $686: B=2485 → 1799, A=5715 → 6401 [TX008] Transfer $232: A=6401 → 6169, B=1799 → 2031 [TX009] Transfer $231: B=2031 → 1800, A=6169 → 6400 [TX010] Transfer $625: A=6400 → 5775, B=1800 → 2425 [TX011] Transfer $367: A=5775 → 5408, B=2425 → 2792 [TX012] Transfer $585: B=2792 → 2207, A=5408 → 5993 [TX013] Transfer $761: A=5993 → 5232, B=2207 → 2968 [TX014] Transfer $682: A=5232 → 4550, B=2968 → 3650 [TX015] Transfer $643: A=4550 → 3907, B=3650 → 4293 [TX016] Transfer $521: A=3907 → 3386, B=4293 → 4814 [TX017] Transfer $568: A=3386 → 2818, B=4814 → 5382 [TX018] Transfer $459: A=2818 → 2359, B=5382 → 5841 [TX019] Transfer $264: A=2359 → 2095, B=5841 → 6105 [TX020] Transfer $235: A=2095 → 1860, B=6105 → 6340 [TX021] Transfer $43: B=6340 → 6297, A=1860 → 1903 [TX022] Transfer $95: B=6297 → 6202, A=1903 → 1998 [TX023] Transfer $929: A=1998 → 1069, B=6202 → 7131 [TX024] Transfer $64: A=1069 → 1005, B=7131 → 7195 [TX025] Transfer $251: A=1005 → 754, B=7195 → 7446 [TX026] Transfer $102: B=7446 → 7344, A=754 → 856 [TX027] Transfer $651: A=856 → 205, B=7344 → 7995 [TX028] Transfer $63: A=205 → 142, B=7995 → 8058 [TX029] Transfer $7: A=142 → 135, B=8058 → 8065 [TX030] Transfer $104: B=8065 → 7961, A=135 → 239 [TX031] Transfer $78: A=239 → 161, B=7961 → 8039 [TX032] Transfer $57: A=161 → 104, B=8039 → 8096 [TX033] Transfer $4: A=104 → 100, B=8096 → 8100 [TX034] Balance check: A=100 [TX035] Balance check: A=100 [TX036] Transfer $506: B=8100 → 7594, A=100 → 606 [TX037] Transfer $261: A=606 → 345, B=7594 → 7855 [TX038] Transfer $976: B=7855 → 6879, A=345 → 1321 [TX039] Transfer $890: B=6879 → 5989, A=1321 → 2211 [TX040] Transfer $283: A=2211 → 1928, B=5989 → 6272 [TX041] Transfer $116: B=6272 → 6156, A=1928 → 2044 [TX042] Transfer $8: A=2044 → 2036, B=6156 → 6164 [TX043] Transfer $509: B=6164 → 5655, A=2036 → 2545 [TX044] Transfer $69: A=2545 → 2476, B=5655 → 5724 [TX045] Transfer $98: B=5724 → 5626, A=2476 → 2574 [TX046] Transfer $655: B=5626 → 4971, A=2574 → 3229 [TX047] Transfer $799: A=3229 → 2430, B=4971 → 5770 [TX048] Transfer $220: A=2430 → 2210, B=5770 → 5990 [TX049] Transfer $329: B=5990 → 5661, A=2210 → 2539 [TX050] Transfer $703: B=5661 → 4958, A=2539 → 3242 [TX051] Transfer $586: B=4958 → 4372, A=3242 → 3828 [TX052] Transfer $162: A=3828 → 3666, B=4372 → 4534 [TX053] Transfer $806: A=3666 → 2860, B=4534 → 5340 [TX054] Transfer $626: A=2860 → 2234, B=5340 → 5966 [TX055] Transfer $981: A=2234 → 1253, B=5966 → 6947 [TX056] Thread T1: READ B=6947 [TX057] Thread T2: READ B=6947 [TX058] Thread T1: COMMIT B=6947 → 6791 [TX059] Thread T2: COMMIT B=6947 → 6829 [TX060] Transfer $485: A=1253 → 768, B=6829 → 7314 [TX061] Transfer $150: B=7314 → 7164, A=768 → 918 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX059	Thread T2 overwrites T1's change	LOST_UPDATE	61	{"bug_type": "LOST_UPDATE", "bug_location": "TX059", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 61}
26	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $415: A=4000 → 3585, B=4200 → 4615 [TX002] Transfer $572: B=4615 → 4043, A=3585 → 4157 [TX003] Transfer $812: A=4157 → 3345, B=4043 → 4855 [TX004] Transfer $672: B=4855 → 4183, A=3345 → 4017 [TX005] Transfer $374: B=4183 → 3809, A=4017 → 4391 [TX006] Transfer $866: A=4391 → 3525, B=3809 → 4675 [TX007] Transfer $575: B=4675 → 4100, A=3525 → 4100 [TX008] Transfer $735: B=4100 → 3365, A=4100 → 4835 [TX009] Transfer $101: B=3365 → 3264, A=4835 → 4936 [TX010] Transfer $351: A=4936 → 4585, B=3264 → 3615 [TX011] Transfer $562: B=3615 → 3053, A=4585 → 5147 [TX012] Transfer $48: B=3053 → 3005, A=5147 → 5195 [TX013] Transfer $145: A=5195 → 5050, B=3005 → 3150 [TX014] Transfer $262: B=3150 → 2888, A=5050 → 5312 [TX015] Transfer $125: A=5312 → 5187, B=2888 → 3013 [TX016] Transfer $470: B=3013 → 2543, A=5187 → 5657 [TX017] Transfer $112: A=5657 → 5545, B=2543 → 2655 [TX018] Transfer $950: B=2655 → 1705, A=5545 → 6495 [TX019] Transfer $470: A=6495 → 6025, B=1705 → 2175 [TX020] Transfer $6: A=6025 → 6019, B=2175 → 2181 [TX021] Transfer $860: A=6019 → 5159, B=2181 → 3041 [TX022] Transfer $710: B=3041 → 2331, A=5159 → 5869 [TX023] Transfer $108: A=5869 → 5761, B=2331 → 2439 [TX024] Payment PAY1005: Transfer $518: B=2439 → 1921, A=5761 → 6279 [TX025] Transfer $625: B=1921 → 1296, A=6279 → 6904 [TX026] Transfer $409: A=6904 → 6495, B=1296 → 1705 [TX027] Transfer $465: B=1705 → 1240, A=6495 → 6960 [TX028] Transfer $424: A=6960 → 6536, B=1240 → 1664 [TX029] Transfer $730: B=1664 → 934, A=6536 → 7266 [TX030] Transfer $216: A=7266 → 7050, B=934 → 1150 [TX031] Transfer $945: B=1150 → 205, A=7050 → 7995 [TX032] Transfer $517: A=7995 → 7478, B=205 → 722 [TX033] Transfer $362: B=722 → 360, A=7478 → 7840 [TX034] Transfer $148: B=360 → 212, A=7840 → 7988 [TX035] Transfer $68: B=212 → 144, A=7988 → 8056 [TX036] Transfer $392: A=8056 → 7664, B=144 → 536 [TX037] Transfer $688: A=7664 → 6976, B=536 → 1224 [TX038] Transfer $275: A=6976 → 6701, B=1224 → 1499 [TX039] Transfer $701: A=6701 → 6000, B=1499 → 2200 [TX040] Transfer $861: B=2200 → 1339, A=6000 → 6861 [TX041] Transfer $210: A=6861 → 6651, B=1339 → 1549 [TX042] Transfer $835: A=6651 → 5816, B=1549 → 2384 [TX043] Transfer $632: B=2384 → 1752, A=5816 → 6448 [TX044] Transfer $245: A=6448 → 6203, B=1752 → 1997 [TX045] Payment PAY1005: Transfer $518: B=1997 → 1479, A=6203 → 6721 [TX046] Transfer $950: B=1479 → 529, A=6721 → 7671 [TX047] Transfer $215: B=529 → 314, A=7671 → 7886 [TX048] Transfer $5: B=314 → 309, A=7886 → 7891 [TX049] Transfer $160: B=309 → 149, A=7891 → 8051 [TX050] Transfer $42: B=149 → 107, A=8051 → 8093 [TX051] Transfer $7: B=107 → 100, A=8093 → 8100 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX045	Payment PAY1005 processed twice	DUPLICATE_TXN	51	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX045", "explanation": "Payment PAY1005 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 51}
87	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $892: B=4200 → 3308, A=4000 → 4892 [TX002] Transfer $433: B=3308 → 2875, A=4892 → 5325 [TX003] Transfer $887: A=5325 → 4438, B=2875 → 3762 [TX004] Transfer $928: B=3762 → 2834, A=4438 → 5366 [TX005] Transfer $431: B=2834 → 2403, A=5366 → 5797 [TX006] Transfer $87: B=2403 → 2316, A=5797 → 5884 [TX007] Transfer $732: A=5884 → 5152, B=2316 → 3048 [TX008] Transfer $601: B=3048 → 2447, A=5152 → 5753 [TX009] Transfer $607: B=2447 → 1840, A=5753 → 6360 [TX010] Transfer $108: B=1840 → 1732, A=6360 → 6468 [TX011] Transfer $623: B=1732 → 1109, A=6468 → 7091 [TX012] Transfer $618: B=1109 → 491, A=7091 → 7709 [TX013] Transfer $591: A=7709 → 7118, B=491 → 1082 [TX014] Transfer $991: A=7118 → 6127, B=1082 → 2073 [TX015] Transfer $596: A=6127 → 5531, B=2073 → 2669 [TX016] Transfer $737: B=2669 → 1932, A=5531 → 6268 [TX017] Transfer $664: A=6268 → 5604, B=1932 → 2596 [TX018] Transfer $589: B=2596 → 2007, A=5604 → 6193 [TX019] Transfer $834: A=6193 → 5359, B=2007 → 2841 [TX020] Transfer $223: B=2841 → 2618, A=5359 → 5582 [TX021] Transfer $647: A=5582 → 4935, B=2618 → 3265 [TX022] Transfer $301: B=3265 → 2964, A=4935 → 5236 [TX023] Transfer $748: B=2964 → 2216, A=5236 → 5984 [TX024] Transfer $369: B=2216 → 1847, A=5984 → 6353 [TX025] Transfer $998: B=1847 → 849, A=6353 → 7351 [TX026] Transfer $458: A=7351 → 6893, B=849 → 1307 [TX027] Transfer $471: A=6893 → 6422, B=1307 → 1778 [TX028] Transfer $216: B=1778 → 1562, A=6422 → 6638 [TX029] Transfer $773: B=1562 → 789, A=6638 → 7411 [TX030] Transfer $513: B=789 → 276, A=7411 → 7924 [TX031] Transfer $362: A=7924 → 7562, B=276 → 638 [TX032] Transfer $850: A=7562 → 6712, B=638 → 1488 [TX033] Transfer $938: B=1488 → 550, A=6712 → 7650 [TX034] Transfer $322: A=7650 → 7328, B=550 → 872 [TX035] Transfer $393: B=872 → 479, A=7328 → 7721 [TX036] Transfer $878: A=7721 → 6843, B=479 → 1357 [TX037] Transfer $347: B=1357 → 1010, A=6843 → 7190 [TX038] Transfer $774: B=1010 → 236, A=7190 → 7964 [TX039] Transfer $332: A=7964 → 7632, B=236 → 568 [TX040] Transfer $196: A=7632 → 7436, B=568 → 766 [TX041] Transfer $409: B=764 → 355, A=7436 → 7845 [TX042] Transfer $97: A=7845 → 7748, B=355 → 452 [TX043] Transfer $874: A=7748 → 6874, B=452 → 1326 [TX044] Transfer $735: B=1326 → 591, A=6874 → 7609 [TX045] Transfer $205: B=591 → 386, A=7609 → 7814 [TX046] Transfer $108: A=7814 → 7706, B=386 → 494 [TX047] Transfer $167: B=494 → 327, A=7706 → 7873 [TX048] Transfer $847: A=7873 → 7026, B=327 → 1174 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX040	Mathematical calculation is incorrect	CALC_ERROR	48	{"bug_type": "CALC_ERROR", "bug_location": "TX040", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 48}
33	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $499: A=4000 → 3501, B=4200 → 4699 [TX002] Transfer $34: A=3501 → 3467, B=4699 → 4733 [TX003] Transfer $540: B=4733 → 4193, A=3467 → 4007 [TX004] Transfer $377: B=4193 → 3816, A=4007 → 4383 [TX005] Transfer $954: A=4384 → 3430, B=3816 → 4770 [TX006] Transfer $952: A=3430 → 2478, B=4770 → 5722 [TX007] Transfer $822: A=2478 → 1656, B=5722 → 6544 [TX008] Transfer $573: A=1656 → 1083, B=6544 → 7117 [TX009] Transfer $815: B=7117 → 6302, A=1083 → 1898 [TX010] Transfer $543: A=1898 → 1355, B=6302 → 6845 [TX011] Transfer $856: A=1355 → 499, B=6845 → 7701 [TX012] Transfer $969: B=7701 → 6732, A=499 → 1468 [TX013] Transfer $105: A=1468 → 1363, B=6732 → 6837 [TX014] Transfer $196: A=1363 → 1167, B=6837 → 7033 [TX015] Transfer $585: A=1167 → 582, B=7033 → 7618 [TX016] Transfer $384: A=582 → 198, B=7618 → 8002 [TX017] Transfer $88: A=198 → 110, B=8002 → 8090 [TX018] Transfer $906: B=8090 → 7184, A=110 → 1016 [TX019] Transfer $813: A=1016 → 203, B=7184 → 7997 [TX020] Transfer $66: A=203 → 137, B=7997 → 8063 [TX021] Transfer $548: B=8063 → 7515, A=137 → 685 [TX022] Transfer $926: B=7515 → 6589, A=685 → 1611 [TX023] Transfer $867: B=6589 → 5722, A=1611 → 2478 [TX024] Transfer $784: B=5722 → 4938, A=2478 → 3262 [TX025] Transfer $625: B=4938 → 4313, A=3262 → 3887 [TX026] Transfer $386: A=3887 → 3501, B=4313 → 4699 [TX027] Transfer $986: B=4699 → 3713, A=3501 → 4487 [TX028] Transfer $984: B=3713 → 2729, A=4487 → 5471 [TX029] Transfer $745: B=2729 → 1984, A=5471 → 6216 [TX030] Transfer $612: A=6216 → 5604, B=1984 → 2596 [TX031] Transfer $913: A=5604 → 4691, B=2596 → 3509 [TX032] Transfer $309: B=3509 → 3200, A=4691 → 5000 [TX033] Transfer $878: A=5000 → 4122, B=3200 → 4078 [TX034] Transfer $792: B=4078 → 3286, A=4122 → 4914 [TX035] Transfer $98: B=3286 → 3188, A=4914 → 5012 [TX036] Transfer $366: A=5012 → 4646, B=3188 → 3554 [TX037] Transfer $273: A=4646 → 4373, B=3554 → 3827 [TX038] Transfer $240: B=3827 → 3587, A=4373 → 4613 [TX039] Transfer $96: B=3587 → 3491, A=4613 → 4709 [TX040] Transfer $753: B=3491 → 2738, A=4709 → 5462 [TX041] Transfer $813: A=5462 → 4649, B=2738 → 3551 [TX042] Transfer $501: B=3551 → 3050, A=4649 → 5150 [TX043] Transfer $40: A=5150 → 5110, B=3050 → 3090 [TX044] Transfer $800: B=3090 → 2290, A=5110 → 5910 [TX045] Transfer $358: A=5910 → 5552, B=2290 → 2648 [TX046] Transfer $954: B=2648 → 1694, A=5552 → 6506 [TX047] Transfer $767: A=6506 → 5739, B=1694 → 2461 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX004	Mathematical calculation is incorrect	CALC_ERROR	47	{"bug_type": "CALC_ERROR", "bug_location": "TX004", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 47}
8	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $464: A=4000 → 3536, B=4200 → 4664 [TX002] Transfer $349: A=3536 → 3187, B=4664 → 5013 [TX003] Transfer $427: B=5013 → 4586, A=3187 → 3614 [TX004] Transfer $439: A=3614 → 3175, B=4586 → 5025 [TX005] Transfer $385: B=5025 → 4640, A=3175 → 3560 [TX006] Transfer $70: A=3560 → 3490, B=4640 → 4710 [TX007] Transfer $97: A=3490 → 3393, B=4710 → 4807 [TX008] Transfer $764: B=4807 → 4043, A=3393 → 4157 [TX009] Transfer $571: B=4043 → 3472, A=4157 → 4728 [TX010] Transfer $688: A=4728 → 4040, B=3472 → 4160 [TX011] Transfer $364: A=4040 → 3676, B=4160 → 4524 [TX012] Transfer $993: B=4524 → 3531, A=3676 → 4669 [TX013] Transfer $362: B=3531 → 3169, A=4669 → 5031 [TX014] Transfer $160: A=5031 → 4871, B=3169 → 3329 [TX015] Transfer $869: B=3329 → 2460, A=4871 → 5740 [TX016] Transfer $867: A=5740 → 4873, B=2460 → 3327 [TX017] Transfer $782: B=3327 → 2545, A=4873 → 5655 [TX018] Transfer $828: B=2545 → 1717, A=5655 → 6483 [TX019] Transfer $625: B=1717 → 1092, A=6483 → 7108 [TX020] Transfer $186: B=1092 → 906, A=7108 → 7294 [TX021] Transfer $349: B=906 → 557, A=7294 → 7643 [TX022] Transfer $94: B=557 → 463, A=7643 → 7737 [TX023] Transfer $73: A=7737 → 7664, B=463 → 536 [TX024] Transfer $95: A=7664 → 7569, B=536 → 631 [TX025] Transfer $431: A=7569 → 7138, B=631 → 1062 [TX026] Transfer $163: B=1062 → 899, A=7138 → 7301 [TX027] Transfer $740: B=899 → 159, A=7301 → 8041 [TX028] Transfer $58: B=159 → 101, A=8041 → 8099 [TX029] Transfer $163: A=8099 → 7936, B=101 → 264 [TX030] Transfer $280: A=7936 → 7656, B=264 → 544 [TX031] Transfer $250: B=544 → 294, A=7656 → 7906 [TX032] Transfer $71: B=294 → 223, A=7906 → 7977 [TX033] Transfer $355: A=7977 → 7622, B=223 → 578 [TX034] Transfer $147: B=578 → 431, A=7622 → 7769 [TX035] Transfer $25: B=431 → 406, A=7769 → 7794 [TX036] Transfer $615: A=7794 → 7179, B=406 → 1021 [TX037] Transfer $211: A=7179 → 6968, B=1021 → 1232 [TX038] Transfer $787: B=1232 → 445, A=6968 → 7755 [TX039] Transfer $298: A=7755 → 7457, B=445 → 743 [TX040] Transfer $9: B=743 → 734, A=7457 → 7466 [TX041] Transfer $181: B=734 → 553, A=7466 → 7647 [TX042] Transfer $547: A=7647 → 7100, B=553 → 1100 [TX043] Transfer $75: A=7100 → 7025, B=1100 → 1173 [TX044] Transfer $21: A=7025 → 7004, B=1175 → 1196 [TX045] Transfer $884: B=1196 → 312, A=7004 → 7888 [TX046] Transfer $148: B=312 → 164, A=7888 → 8036 [TX047] Transfer $20: B=164 → 144, A=8036 → 8056 [TX048] Transfer $23: A=8056 → 8033, B=144 → 167 [TX049] Transfer $60: B=167 → 107, A=8033 → 8093 [TX050] Transfer $5: B=107 → 102, A=8093 → 8098 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX043	Mathematical calculation is incorrect	CALC_ERROR	50	{"bug_type": "CALC_ERROR", "bug_location": "TX043", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 50}
47	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $713: B=4200 → 3487, A=4000 → 4713 [TX002] Transfer $658: A=4713 → 4055, B=3487 → 4145 [TX003] Transfer $812: A=4055 → 3243, B=4145 → 4957 [TX004] Transfer $412: A=3243 → 2831, B=4957 → 5369 [TX005] Transfer $323: A=2831 → 2508, B=5369 → 5692 [TX006] Transfer $163: A=2508 → 2345, B=5692 → 5855 [TX007] Transfer $869: A=2345 → 1476, B=5855 → 6724 [TX008] Transfer $464: B=6724 → 6260, A=1476 → 1940 [TX009] Transfer $268: B=6260 → 5992, A=1940 → 2208 [TX010] Transfer $820: A=2208 → 1388, B=5992 → 6812 [TX011] Transfer $88: B=6812 → 6724, A=1388 → 1476 [TX012] Transfer $188: B=6724 → 6536, A=1476 → 1664 [TX013] Transfer $969: B=6536 → 5567, A=1664 → 2633 [TX014] Transfer $972: A=2633 → 1661, B=5567 → 6539 [TX015] Transfer $930: A=1661 → 731, B=6539 → 7469 [TX016] Transfer $205: A=731 → 526, B=7469 → 7674 [TX017] Transfer $52: B=7674 → 7622, A=526 → 578 [TX018] Transfer $616: B=7622 → 7006, A=578 → 1194 [TX019] Transfer $93: B=7006 → 6913, A=1194 → 1287 [TX020] Transfer $971: B=6913 → 5942, A=1287 → 2258 [TX021] Transfer $737: A=2258 → 1521, B=5942 → 6679 [TX022] Transfer $849: B=6679 → 5830, A=1521 → 2370 [TX023] Transfer $231: B=5830 → 5599, A=2370 → 2601 [TX024] Transfer $970: A=2601 → 1631, B=5599 → 6569 [TX025] Transfer $766: B=6569 → 5803, A=1631 → 2397 [TX026] Transfer $135: B=5803 → 5668, A=2397 → 2532 [TX027] Transfer $616: B=5668 → 5052, A=2532 → 3148 [TX028] Transfer $746: A=3148 → 2402, B=5052 → 5798 [TX029] Transfer $186: A=2402 → 2216, B=5798 → 5984 [TX030] Transfer $31: B=5984 → 5953, A=2216 → 2247 [TX031] Transfer $243: B=5953 → 5710, A=2247 → 2490 [TX032] Transfer $380: B=5710 → 5330, A=2490 → 2870 [TX033] Transfer $12: B=5330 → 5318, A=2870 → 2882 [TX034] Transfer $894: B=5318 → 4424, A=2882 → 3776 [TX035] Transfer $705: B=4424 → 3719, A=3776 → 4481 [TX036] Transfer $727: A=4481 → 3754, B=3719 → 4446 [TX037] Transfer $76: B=4446 → 4370, A=3754 → 3830 [TX038] Transfer $55: A=3830 → 3775, B=4370 → 4425 [TX039] Transfer $484: B=4425 → 3941, A=3775 → 4259 [TX040] Transfer $3942: B=3941 → -1, A=4259 → 8201 [TX041] Balance check: B=-1 [TX042] Balance check: B=-1 [TX043] Balance check: B=-1 [TX044] Transfer $268: A=8201 → 7933, B=-1 → 267 [TX045] Transfer $954: A=7933 → 6979, B=267 → 1221 [TX046] Transfer $137: B=1221 → 1084, A=6979 → 7116 [TX047] Transfer $729: A=7116 → 6387, B=1084 → 1813 [TX048] Transfer $268: B=1813 → 1545, A=6387 → 6655 [TX049] Transfer $47: A=6655 → 6608, B=1545 → 1592 [TX050] Transfer $894: A=6608 → 5714, B=1592 → 2486 [TX051] Transfer $950: B=2486 → 1536, A=5714 → 6664 [TX052] Transfer $926: B=1536 → 610, A=6664 → 7590 [TX053] Transfer $266: B=610 → 344, A=7590 → 7856 [TX054] Transfer $230: B=344 → 114, A=7856 → 8086 [TX055] Transfer $756: A=8086 → 7330, B=114 → 870 [TX056] Transfer $571: B=870 → 299, A=7330 → 7901 [TX057] Transfer $50: B=299 → 249, A=7901 → 7951 [TX058] Transfer $237: A=7951 → 7714, B=249 → 486 [TX059] Transfer $483: A=7714 → 7231, B=486 → 969 [TX060] Transfer $724: B=969 → 245, A=7231 → 7955 [TX061] Transfer $31: B=245 → 214, A=7955 → 7986 [TX062] Transfer $58: B=214 → 156, A=7986 → 8044 [TX063] Transfer $31: B=156 → 125, A=8044 → 8075 [TX064] Transfer $25: B=125 → 100, A=8075 → 8100 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX040	Account balance goes negative	NEGATIVE_BAL	64	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX040", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 64}
59	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $406: A=4000 → 3594, B=4200 → 4606 [TX002] Transfer $325: A=3594 → 3269, B=4606 → 4931 [TX003] Transfer $859: A=3269 → 2410, B=4931 → 5790 [TX004] Transfer $698: A=2410 → 1712, B=5790 → 6488 [TX005] Payment PAY1019: Transfer $617: B=6488 → 5871, A=1712 → 2329 [TX006] Transfer $766: B=5871 → 5105, A=2329 → 3095 [TX007] Transfer $318: A=3095 → 2777, B=5105 → 5423 [TX008] Transfer $870: A=2777 → 1907, B=5423 → 6293 [TX009] Transfer $508: B=6293 → 5785, A=1907 → 2415 [TX010] Transfer $62: B=5785 → 5723, A=2415 → 2477 [TX011] Transfer $849: B=5723 → 4874, A=2477 → 3326 [TX012] Transfer $719: A=3326 → 2607, B=4874 → 5593 [TX013] Transfer $879: A=2607 → 1728, B=5593 → 6472 [TX014] Transfer $308: B=6472 → 6164, A=1728 → 2036 [TX015] Transfer $563: A=2036 → 1473, B=6164 → 6727 [TX016] Transfer $434: B=6727 → 6293, A=1473 → 1907 [TX017] Transfer $777: B=6293 → 5516, A=1907 → 2684 [TX018] Transfer $75: B=5516 → 5441, A=2684 → 2759 [TX019] Transfer $715: B=5441 → 4726, A=2759 → 3474 [TX020] Transfer $101: A=3474 → 3373, B=4726 → 4827 [TX021] Transfer $772: A=3373 → 2601, B=4827 → 5599 [TX022] Transfer $470: A=2601 → 2131, B=5599 → 6069 [TX023] Transfer $454: A=2131 → 1677, B=6069 → 6523 [TX024] Transfer $920: B=6523 → 5603, A=1677 → 2597 [TX025] Transfer $225: A=2597 → 2372, B=5603 → 5828 [TX026] Transfer $372: A=2372 → 2000, B=5828 → 6200 [TX027] Transfer $387: A=2000 → 1613, B=6200 → 6587 [TX028] Transfer $950: B=6587 → 5637, A=1613 → 2563 [TX029] Transfer $366: A=2563 → 2197, B=5637 → 6003 [TX030] Transfer $969: B=6003 → 5034, A=2197 → 3166 [TX031] Transfer $529: A=3166 → 2637, B=5034 → 5563 [TX032] Transfer $995: B=5563 → 4568, A=2637 → 3632 [TX033] Transfer $252: A=3632 → 3380, B=4568 → 4820 [TX034] Transfer $248: A=3380 → 3132, B=4820 → 5068 [TX035] Transfer $311: B=5068 → 4757, A=3132 → 3443 [TX036] Transfer $796: A=3443 → 2647, B=4757 → 5553 [TX037] Transfer $887: A=2647 → 1760, B=5553 → 6440 [TX038] Transfer $649: B=6440 → 5791, A=1760 → 2409 [TX039] Payment PAY1019: Transfer $617: B=5791 → 5174, A=2409 → 3026 [TX040] Transfer $13: B=5174 → 5161, A=3026 → 3039 [TX041] Transfer $86: A=3039 → 2953, B=5161 → 5247 [TX042] Transfer $658: A=2953 → 2295, B=5247 → 5905 [TX043] Transfer $602: A=2295 → 1693, B=5905 → 6507 [TX044] Transfer $712: B=6507 → 5795, A=1693 → 2405 [TX045] Transfer $395: A=2405 → 2010, B=5795 → 6190 [TX046] Transfer $307: B=6190 → 5883, A=2010 → 2317 [TX047] Transfer $335: A=2317 → 1982, B=5883 → 6218 [TX048] Transfer $417: A=1982 → 1565, B=6218 → 6635 [TX049] Transfer $571: A=1565 → 994, B=6635 → 7206 [TX050] Transfer $533: B=7206 → 6673, A=994 → 1527 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX039	Payment PAY1019 processed twice	DUPLICATE_TXN	50	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX039", "explanation": "Payment PAY1019 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 50}
63	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $548: A=4000 → 3452, B=4200 → 4748 [TX002] Transfer $42: A=3452 → 3410, B=4748 → 4790 [TX003] Transfer $951: A=3410 → 2459, B=4790 → 5741 [TX004] Transfer $896: A=2459 → 1563, B=5741 → 6637 [TX005] Transfer $845: A=1563 → 718, B=6637 → 7482 [TX006] Transfer $3: A=718 → 715, B=7482 → 7485 [TX007] Transfer $334: B=7485 → 7151, A=715 → 1049 [TX008] Transfer $741: A=1049 → 308, B=7151 → 7892 [TX009] Transfer $158: A=308 → 150, B=7892 → 8050 [TX010] Transfer $60: B=8050 → 7990, A=150 → 210 [TX011] Thread T1: READ A=210 [TX012] Thread T2: READ A=210 [TX013] Thread T1: COMMIT A=210 → 149 [TX014] Thread T2: COMMIT A=210 → 153 [TX015] Transfer $264: B=7990 → 7726, A=153 → 417 [TX016] Transfer $197: A=417 → 220, B=7726 → 7923 [TX017] Transfer $838: B=7923 → 7085, A=220 → 1058 [TX018] Transfer $334: B=7085 → 6751, A=1058 → 1392 [TX019] Transfer $597: B=6751 → 6154, A=1392 → 1989 [TX020] Transfer $458: B=6154 → 5696, A=1989 → 2447 [TX021] Transfer $379: A=2447 → 2068, B=5696 → 6075 [TX022] Transfer $97: A=2068 → 1971, B=6075 → 6172 [TX023] Transfer $472: B=6172 → 5700, A=1971 → 2443 [TX024] Transfer $195: A=2443 → 2248, B=5700 → 5895 [TX025] Transfer $665: B=5895 → 5230, A=2248 → 2913 [TX026] Transfer $319: B=5230 → 4911, A=2913 → 3232 [TX027] Transfer $839: A=3232 → 2393, B=4911 → 5750 [TX028] Transfer $73: B=5750 → 5677, A=2393 → 2466 [TX029] Transfer $438: A=2466 → 2028, B=5677 → 6115 [TX030] Transfer $932: A=2028 → 1096, B=6115 → 7047 [TX031] Transfer $743: B=7047 → 6304, A=1096 → 1839 [TX032] Transfer $619: A=1839 → 1220, B=6304 → 6923 [TX033] Transfer $395: A=1220 → 825, B=6923 → 7318 [TX034] Transfer $15: A=825 → 810, B=7318 → 7333 [TX035] Transfer $256: A=810 → 554, B=7333 → 7589 [TX036] Transfer $75: A=554 → 479, B=7589 → 7664 [TX037] Transfer $56: A=479 → 423, B=7664 → 7720 [TX038] Transfer $209: B=7720 → 7511, A=423 → 632 [TX039] Transfer $456: A=632 → 176, B=7511 → 7967 [TX040] Transfer $44: A=176 → 132, B=7967 → 8011 [TX041] Transfer $251: B=8011 → 7760, A=132 → 383 [TX042] Transfer $280: A=383 → 103, B=7760 → 8040 [TX043] Transfer $2: A=103 → 101, B=8040 → 8042 [TX044] Balance check: A=101 [TX045] Balance check: A=101 [TX046] Balance check: A=101 [TX047] Balance check: A=101 [TX048] Balance check: A=101 [TX049] Transfer $363: B=8042 → 7679, A=101 → 464 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX014	Thread T2 overwrites T1's change	LOST_UPDATE	49	{"bug_type": "LOST_UPDATE", "bug_location": "TX014", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 49}
74	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $1000: B=4200 → 3200, A=4000 → 5000 [TX002] Transfer $483: B=3200 → 2717, A=5000 → 5483 [TX003] Transfer $166: B=2717 → 2551, A=5483 → 5649 [TX004] Transfer $299: B=2551 → 2252, A=5649 → 5948 [TX005] Transfer $110: A=5948 → 5838, B=2252 → 2362 [TX006] Transfer $525: A=5838 → 5313, B=2362 → 2887 [TX007] Transfer $389: B=2887 → 2498, A=5313 → 5702 [TX008] Transfer $392: A=5702 → 5310, B=2498 → 2890 [TX009] Transfer $983: A=5310 → 4327, B=2890 → 3873 [TX010] Transfer $553: A=4327 → 3774, B=3873 → 4426 [TX011] Transfer $623: A=3774 → 3151, B=4426 → 5049 [TX012] Transfer $326: B=5049 → 4723, A=3151 → 3477 [TX013] Transfer $858: B=4723 → 3865, A=3477 → 4335 [TX014] Transfer $338: B=3865 → 3527, A=4335 → 4673 [TX015] Transfer $238: A=4673 → 4435, B=3527 → 3765 [TX016] Transfer $768: B=3765 → 2997, A=4435 → 5203 [TX017] Transfer $457: A=5203 → 4746, B=2997 → 3454 [TX018] Transfer $83: B=3454 → 3371, A=4746 → 4829 [TX019] Transfer $938: B=3371 → 2433, A=4829 → 5767 [TX020] Transfer $621: B=2433 → 1812, A=5767 → 6388 [TX021] Transfer $807: A=6388 → 5581, B=1812 → 2619 [TX022] Transfer $585: B=2619 → 2034, A=5581 → 6166 [TX023] Transfer $797: A=6166 → 5369, B=2034 → 2831 [TX024] Transfer $622: B=2831 → 2209, A=5369 → 5991 [TX025] Transfer $351: B=2209 → 1858, A=5991 → 6342 [TX026] Transfer $85: B=1858 → 1773, A=6342 → 6427 [TX027] Transfer $519: B=1773 → 1254, A=6427 → 6946 [TX028] Transfer $649: A=6946 → 6297, B=1254 → 1903 [TX029] Transfer $899: A=6297 → 5398, B=1903 → 2802 [TX030] Transfer $172: B=2802 → 2630, A=5398 → 5570 [TX031] Transfer $271: A=5570 → 5299, B=2630 → 2901 [TX032] Transfer $131: B=2901 → 2770, A=5299 → 5430 [TX033] Transfer $26: A=5430 → 5404, B=2770 → 2796 [TX034] Transfer $137: A=5404 → 5267, B=2796 → 2933 [TX035] Transfer $364: B=2933 → 2569, A=5267 → 5631 [TX036] Transfer $715: A=5631 → 4916, B=2569 → 3284 [TX037] Transfer $123: A=4916 → 4793, B=3284 → 3407 [TX038] Transfer $607: B=3407 → 2800, A=4793 → 5400 [TX039] Transfer $77: A=5400 → 5323, B=2800 → 2877 [TX040] Transfer $934: B=2877 → 1943, A=5323 → 6257 [TX041] Transfer $760: B=1943 → 1183, A=6257 → 7017 [TX042] Transfer $777: B=1183 → 406, A=7017 → 7794 [TX043] Transfer $95: B=406 → 311, A=7794 → 7889 [TX044] Transfer $919: A=7889 → 6970, B=311 → 1230 [TX045] Transfer $692: A=6970 → 6278, B=1230 → 1922 [TX046] Transfer $330: B=1922 → 1592, A=6278 → 6608 [TX047] Transfer $522: B=1592 → 1070, A=6608 → 7130 [TX048] Transfer $239: B=1070 → 831, A=7130 → 7369 [TX049] Transfer $351: B=831 → 480, A=7369 → 7720 [TX050] Transfer $294: A=7720 → 7426, B=480 → 774 [TX051] Transfer $328: B=774 → 446, A=7426 → 7754 [TX052] Transfer $7756: A=7754 → -2, B=446 → 8202 [TX053] Balance check: A=-2 [TX054] Transfer $103: B=8202 → 8099, A=-2 → 101 [TX055] Transfer $171: B=8099 → 7928, A=101 → 272 [TX056] Transfer $72: A=272 → 200, B=7928 → 8000 [TX057] Transfer $231: B=8000 → 7769, A=200 → 431 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX052	Account balance goes negative	NEGATIVE_BAL	57	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX052", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 57}
44	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $300: A=4000 → 3700, B=4200 → 4500 [TX002] Transfer $786: A=3700 → 2914, B=4500 → 5286 [TX003] Transfer $615: A=2914 → 2299, B=5286 → 5901 [TX004] Transfer $895: A=2299 → 1404, B=5901 → 6796 [TX005] Transfer $279: B=6796 → 6517, A=1404 → 1683 [TX006] Transfer $549: B=6517 → 5968, A=1683 → 2232 [TX007] Transfer $15: B=5968 → 5953, A=2232 → 2247 [TX008] Transfer $383: A=2247 → 1864, B=5953 → 6336 [TX009] Transfer $350: B=6336 → 5986, A=1864 → 2214 [TX010] Transfer $225: A=2214 → 1989, B=5986 → 6211 [TX011] Transfer $853: A=1989 → 1136, B=6211 → 7064 [TX012] Transfer $429: A=1136 → 707, B=7064 → 7493 [TX013] Transfer $121: B=7493 → 7372, A=707 → 828 [TX014] Transfer $493: A=828 → 335, B=7372 → 7865 [TX015] Transfer $709: B=7865 → 7156, A=335 → 1044 [TX016] Transfer $838: B=7156 → 6318, A=1044 → 1882 [TX017] Transfer $178: B=6318 → 6140, A=1882 → 2060 [TX018] Transfer $764: B=6140 → 5376, A=2060 → 2824 [TX019] Transfer $133: A=2824 → 2691, B=5376 → 5509 [TX020] Transfer $316: A=2691 → 2375, B=5509 → 5825 [TX021] Transfer $135: A=2375 → 2240, B=5825 → 5960 [TX022] Transfer $709: A=2240 → 1531, B=5960 → 6669 [TX023] Transfer $21: A=1531 → 1510, B=6669 → 6690 [TX024] Transfer $6692: B=6690 → -2, A=1510 → 8202 [TX025] Transfer $35: A=8202 → 8167, B=-2 → 33 [TX026] Transfer $123: A=8167 → 8044, B=33 → 156 [TX027] Transfer $6: B=156 → 150, A=8044 → 8050 [TX028] Transfer $50: B=150 → 100, A=8050 → 8100 [TX029] Transfer $944: A=8100 → 7156, B=100 → 1044 [TX030] Transfer $191: A=7156 → 6965, B=1044 → 1235 [TX031] Transfer $94: B=1235 → 1141, A=6965 → 7059 [TX032] Transfer $973: A=7059 → 6086, B=1141 → 2114 [TX033] Transfer $166: B=2114 → 1948, A=6086 → 6252 [TX034] Transfer $103: A=6252 → 6149, B=1948 → 2051 [TX035] Transfer $734: A=6149 → 5415, B=2051 → 2785 [TX036] Transfer $177: A=5415 → 5238, B=2785 → 2962 [TX037] Transfer $948: A=5238 → 4290, B=2962 → 3910 [TX038] Transfer $377: A=4290 → 3913, B=3910 → 4287 [TX039] Transfer $691: A=3913 → 3222, B=4287 → 4978 [TX040] Transfer $856: A=3222 → 2366, B=4978 → 5834 [TX041] Transfer $436: B=5834 → 5398, A=2366 → 2802 [TX042] Transfer $419: A=2802 → 2383, B=5398 → 5817 [TX043] Transfer $128: A=2383 → 2255, B=5817 → 5945 [TX044] Transfer $534: B=5945 → 5411, A=2255 → 2789 [TX045] Transfer $782: A=2789 → 2007, B=5411 → 6193 [TX046] Transfer $572: B=6193 → 5621, A=2007 → 2579 [TX047] Transfer $337: A=2579 → 2242, B=5621 → 5958 [TX048] Transfer $396: B=5958 → 5562, A=2242 → 2638 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX024	Account balance goes negative	NEGATIVE_BAL	48	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX024", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 48}
98	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $616: A=4000 → 3384, B=4200 → 4816 [TX002] Transfer $69: A=3384 → 3315, B=4816 → 4885 [TX003] Transfer $793: A=3315 → 2522, B=4885 → 5678 [TX004] Transfer $286: A=2522 → 2236, B=5678 → 5964 [TX005] Transfer $477: B=5964 → 5487, A=2236 → 2713 [TX006] Transfer $858: B=5487 → 4629, A=2713 → 3571 [TX007] Transfer $877: B=4629 → 3752, A=3571 → 4448 [TX008] Transfer $397: B=3752 → 3355, A=4448 → 4845 [TX009] Transfer $347: A=4845 → 4498, B=3355 → 3702 [TX010] Transfer $1000: A=4498 → 3498, B=3702 → 4702 [TX011] Transfer $259: B=4702 → 4443, A=3498 → 3757 [TX012] Transfer $897: B=4443 → 3546, A=3757 → 4654 [TX013] Transfer $322: B=3546 → 3224, A=4654 → 4976 [TX014] Transfer $581: B=3224 → 2643, A=4976 → 5557 [TX015] Transfer $997: A=5557 → 4560, B=2643 → 3640 [TX016] Transfer $847: B=3640 → 2793, A=4560 → 5407 [TX017] Transfer $287: B=2793 → 2506, A=5407 → 5694 [TX018] Transfer $687: B=2506 → 1819, A=5694 → 6381 [TX019] Transfer $823: A=6381 → 5558, B=1819 → 2642 [TX020] Transfer $705: B=2642 → 1937, A=5558 → 6263 [TX021] Transfer $211: B=1937 → 1726, A=6263 → 6474 [TX022] Transfer $122: B=1726 → 1604, A=6474 → 6596 [TX023] Transfer $212: B=1604 → 1392, A=6596 → 6808 [TX024] Transfer $910: B=1392 → 482, A=6808 → 7718 [TX025] Transfer $127: B=482 → 355, A=7718 → 7845 [TX026] Transfer $185: B=355 → 170, A=7845 → 8030 [TX027] Transfer $70: B=170 → 100, A=8030 → 8100 [TX028] Balance check: B=100 [TX029] Balance check: B=100 [TX030] Balance check: B=100 [TX031] Balance check: B=100 [TX032] Transfer $195: A=8100 → 7905, B=100 → 295 [TX033] Transfer $118: B=295 → 177, A=7905 → 8023 [TX034] Transfer $27: B=177 → 150, A=8023 → 8050 [TX035] Transfer $29: B=150 → 121, A=8050 → 8079 [TX036] Transfer $17: B=121 → 104, A=8079 → 8096 [TX037] Transfer $3: B=104 → 101, A=8096 → 8099 [TX038] Transfer $187: A=8099 → 7912, B=101 → 288 [TX039] Transfer $780: A=7912 → 7132, B=288 → 1068 [TX040] Transfer $869: A=7132 → 6263, B=1068 → 1937 [TX041] Transfer $112: A=6263 → 6151, B=1937 → 2049 [TX042] Transfer $804: B=2049 → 1245, A=6151 → 6955 [TX043] Transfer $211: A=6955 → 6744, B=1245 → 1456 [TX044] Transfer $12: A=6744 → 6732, B=1456 → 1468 [TX045] Transfer $641: A=6732 → 6091, B=1468 → 2109 [TX046] Transfer $442: B=2109 → 1667, A=6091 → 6533 [TX047] Transfer $227: A=6533 → 6306, B=1667 → 1894 [TX048] Transfer $862: B=1894 → 1032, A=6306 → 7168 [TX049] Transfer $25: A=7168 → 7143, B=1032 → 1057 [TX050] Transfer $177: B=1057 → 880, A=7143 → 7320 [TX051] Transfer $898: B=880 → -18, A=7320 → 8218 [TX052] Transfer $95: A=8218 → 8123, B=-18 → 77 [TX053] Balance check: B=77 [TX054] Transfer $254: A=8123 → 7869, B=77 → 331 [TX055] Transfer $63: B=331 → 268, A=7869 → 7932 [TX056] Transfer $46: B=268 → 222, A=7932 → 7978 [TX057] Transfer $111: A=7978 → 7867, B=222 → 333 [TX058] Transfer $689: A=7867 → 7178, B=333 → 1022 [TX059] Transfer $595: B=1022 → 427, A=7178 → 7773 [TX060] Transfer $111: B=427 → 316, A=7773 → 7884 [TX061] Transfer $869: A=7884 → 7015, B=316 → 1185 [TX062] Transfer $731: A=7015 → 6284, B=1185 → 1916 [TX063] Transfer $155: B=1916 → 1761, A=6284 → 6439 [TX064] Transfer $25: B=1761 → 1736, A=6439 → 6464 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX051	Account balance goes negative	NEGATIVE_BAL	64	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX051", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 64}
52	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $87: B=4200 → 4113, A=4000 → 4087 [TX002] Transfer $384: A=4087 → 3703, B=4113 → 4497 [TX003] Transfer $552: A=3703 → 3151, B=4497 → 5049 [TX004] Transfer $44: B=5049 → 5005, A=3151 → 3195 [TX005] Transfer $986: A=3195 → 2209, B=5005 → 5991 [TX006] Transfer $2: B=5991 → 5989, A=2209 → 2211 [TX007] Transfer $281: A=2211 → 1930, B=5989 → 6270 [TX008] Transfer $361: B=6270 → 5909, A=1930 → 2291 [TX009] Transfer $48: A=2291 → 2243, B=5909 → 5957 [TX010] Transfer $309: A=2243 → 1934, B=5957 → 6266 [TX011] Transfer $717: A=1934 → 1217, B=6266 → 6983 [TX012] Transfer $744: A=1217 → 473, B=6983 → 7727 [TX013] Transfer $217: B=7727 → 7510, A=473 → 690 [TX014] Transfer $652: B=7510 → 6858, A=690 → 1342 [TX015] Transfer $281: B=6858 → 6577, A=1342 → 1623 [TX016] Transfer $351: A=1623 → 1272, B=6577 → 6928 [TX017] Transfer $984: A=1272 → 288, B=6928 → 7912 [TX018] Transfer $937: B=7912 → 6975, A=288 → 1225 [TX019] Transfer $625: A=1225 → 600, B=6975 → 7600 [TX020] Payment PAY1015: Transfer $925: B=7600 → 6675, A=600 → 1525 [TX021] Transfer $425: A=1525 → 1100, B=6675 → 7100 [TX022] Transfer $553: B=7100 → 6547, A=1100 → 1653 [TX023] Transfer $553: A=1653 → 1100, B=6547 → 7100 [TX024] Transfer $690: A=1100 → 410, B=7100 → 7790 [TX025] Transfer $194: A=410 → 216, B=7790 → 7984 [TX026] Transfer $183: B=7984 → 7801, A=216 → 399 [TX027] Transfer $238: A=399 → 161, B=7801 → 8039 [TX028] Transfer $457: B=8039 → 7582, A=161 → 618 [TX029] Transfer $22: A=618 → 596, B=7582 → 7604 [TX030] Transfer $198: B=7604 → 7406, A=596 → 794 [TX031] Transfer $228: A=794 → 566, B=7406 → 7634 [TX032] Transfer $187: A=566 → 379, B=7634 → 7821 [TX033] Transfer $254: A=379 → 125, B=7821 → 8075 [TX034] Transfer $8: A=125 → 117, B=8075 → 8083 [TX035] Transfer $892: B=8083 → 7191, A=117 → 1009 [TX036] Transfer $176: B=7191 → 7015, A=1009 → 1185 [TX037] Transfer $68: A=1185 → 1117, B=7015 → 7083 [TX038] Transfer $132: A=1117 → 985, B=7083 → 7215 [TX039] Transfer $904: B=7215 → 6311, A=985 → 1889 [TX040] Transfer $870: B=6311 → 5441, A=1889 → 2759 [TX041] Transfer $699: A=2759 → 2060, B=5441 → 6140 [TX042] Transfer $962: B=6140 → 5178, A=2060 → 3022 [TX043] Transfer $876: B=5178 → 4302, A=3022 → 3898 [TX044] Transfer $866: B=4302 → 3436, A=3898 → 4764 [TX045] Transfer $126: B=3436 → 3310, A=4764 → 4890 [TX046] Transfer $372: B=3310 → 2938, A=4890 → 5262 [TX047] Transfer $50: A=5262 → 5212, B=2938 → 2988 [TX048] Transfer $547: B=2988 → 2441, A=5212 → 5759 [TX049] Transfer $7: B=2441 → 2434, A=5759 → 5766 [TX050] Transfer $344: B=2434 → 2090, A=5766 → 6110 [TX051] Transfer $757: A=6110 → 5353, B=2090 → 2847 [TX052] Transfer $982: A=5353 → 4371, B=2847 → 3829 [TX053] Transfer $203: A=4371 → 4168, B=3829 → 4032 [TX054] Transfer $320: A=4168 → 3848, B=4032 → 4352 [TX055] Transfer $30: A=3848 → 3818, B=4352 → 4382 [TX056] Transfer $829: B=4382 → 3553, A=3818 → 4647 [TX057] Payment PAY1015: Transfer $925: B=3553 → 2628, A=4647 → 5572 [TX058] Transfer $862: A=5572 → 4710, B=2628 → 3490 [TX059] Transfer $112: B=3490 → 3378, A=4710 → 4822 [TX060] Transfer $983: B=3378 → 2395, A=4822 → 5805 [TX061] Transfer $843: B=2395 → 1552, A=5805 → 6648 [TX062] Transfer $968: B=1552 → 584, A=6648 → 7616 [TX063] Transfer $784: A=7616 → 6832, B=584 → 1368 [TX064] Transfer $594: A=6832 → 6238, B=1368 → 1962 [TX065] Transfer $999: A=6238 → 5239, B=1962 → 2961 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX057	Payment PAY1015 processed twice	DUPLICATE_TXN	65	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX057", "explanation": "Payment PAY1015 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 65}
85	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $600: B=4200 → 3600, A=4000 → 4600 [TX002] Transfer $671: B=3600 → 2929, A=4600 → 5271 [TX003] Transfer $916: A=5271 → 4355, B=2929 → 3845 [TX004] Transfer $793: A=4355 → 3562, B=3845 → 4638 [TX005] Transfer $317: A=3562 → 3245, B=4638 → 4955 [TX006] Transfer $28: A=3245 → 3217, B=4955 → 4983 [TX007] Transfer $555: A=3217 → 2662, B=4983 → 5538 [TX008] Transfer $337: B=5538 → 5201, A=2662 → 2999 [TX009] Transfer $675: B=5201 → 4526, A=2999 → 3674 [TX010] Transfer $312: A=3674 → 3362, B=4526 → 4838 [TX011] Transfer $3371: A=3362 → -9, B=4838 → 8209 [TX012] Balance check: A=-9 [TX013] Transfer $142: B=8209 → 8067, A=-9 → 133 [TX014] Transfer $856: B=8067 → 7211, A=133 → 989 [TX015] Transfer $456: B=7211 → 6755, A=989 → 1445 [TX016] Transfer $52: A=1445 → 1393, B=6755 → 6807 [TX017] Transfer $410: B=6807 → 6397, A=1393 → 1803 [TX018] Transfer $791: A=1803 → 1012, B=6397 → 7188 [TX019] Transfer $97: B=7188 → 7091, A=1012 → 1109 [TX020] Transfer $168: A=1109 → 941, B=7091 → 7259 [TX021] Transfer $502: A=941 → 439, B=7259 → 7761 [TX022] Transfer $427: B=7761 → 7334, A=439 → 866 [TX023] Transfer $94: A=866 → 772, B=7334 → 7428 [TX024] Transfer $263: B=7428 → 7165, A=772 → 1035 [TX025] Transfer $18: A=1035 → 1017, B=7165 → 7183 [TX026] Transfer $824: A=1017 → 193, B=7183 → 8007 [TX027] Transfer $986: B=8007 → 7021, A=193 → 1179 [TX028] Transfer $371: A=1179 → 808, B=7021 → 7392 [TX029] Transfer $446: B=7392 → 6946, A=808 → 1254 [TX030] Transfer $720: B=6946 → 6226, A=1254 → 1974 [TX031] Transfer $898: A=1974 → 1076, B=6226 → 7124 [TX032] Transfer $976: B=7124 → 6148, A=1076 → 2052 [TX033] Transfer $48: B=6148 → 6100, A=2052 → 2100 [TX034] Transfer $183: A=2100 → 1917, B=6100 → 6283 [TX035] Transfer $533: A=1917 → 1384, B=6283 → 6816 [TX036] Transfer $713: A=1384 → 671, B=6816 → 7529 [TX037] Transfer $64: B=7529 → 7465, A=671 → 735 [TX038] Transfer $382: A=735 → 353, B=7465 → 7847 [TX039] Transfer $431: B=7847 → 7416, A=353 → 784 [TX040] Transfer $533: A=784 → 251, B=7416 → 7949 [TX041] Transfer $95: A=251 → 156, B=7949 → 8044 [TX042] Transfer $3: A=156 → 153, B=8044 → 8047 [TX043] Transfer $315: B=8047 → 7732, A=153 → 468 [TX044] Transfer $932: B=7732 → 6800, A=468 → 1400 [TX045] Transfer $31: B=6800 → 6769, A=1400 → 1431 [TX046] Transfer $31: A=1431 → 1400, B=6769 → 6800 [TX047] Transfer $754: B=6800 → 6046, A=1400 → 2154 [TX048] Transfer $49: A=2154 → 2105, B=6046 → 6095 [TX049] Transfer $163: B=6095 → 5932, A=2105 → 2268 [TX050] Transfer $359: A=2268 → 1909, B=5932 → 6291 [TX051] Transfer $431: A=1909 → 1478, B=6291 → 6722 [TX052] Transfer $993: A=1478 → 485, B=6722 → 7715 [TX053] Transfer $427: B=7715 → 7288, A=485 → 912 [TX054] Transfer $879: B=7288 → 6409, A=912 → 1791 [TX055] Transfer $489: A=1791 → 1302, B=6409 → 6898 [TX056] Transfer $133: B=6898 → 6765, A=1302 → 1435 [TX057] Transfer $981: B=6765 → 5784, A=1435 → 2416 [TX058] Transfer $506: A=2416 → 1910, B=5784 → 6290 [TX059] Transfer $226: A=1910 → 1684, B=6290 → 6516 [TX060] Transfer $232: A=1684 → 1452, B=6516 → 6748 [TX061] Transfer $736: A=1452 → 716, B=6748 → 7484 [TX062] Transfer $910: B=7484 → 6574, A=716 → 1626 [TX063] Transfer $233: A=1626 → 1393, B=6574 → 6807 [TX064] Transfer $749: B=6807 → 6058, A=1393 → 2142 [TX065] Transfer $729: B=6058 → 5329, A=2142 → 2871 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX011	Account balance goes negative	NEGATIVE_BAL	65	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX011", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 65}
12	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $258: B=4200 → 3942, A=4000 → 4258 [TX002] Transfer $130: A=4258 → 4128, B=3942 → 4072 [TX003] Transfer $516: B=4072 → 3556, A=4128 → 4644 [TX004] Transfer $177: A=4644 → 4467, B=3556 → 3733 [TX005] Transfer $847: B=3733 → 2886, A=4467 → 5314 [TX006] Transfer $48: A=5314 → 5266, B=2886 → 2934 [TX007] Transfer $787: B=2934 → 2147, A=5266 → 6053 [TX008] Transfer $511: B=2147 → 1636, A=6053 → 6564 [TX009] Transfer $496: B=1636 → 1140, A=6564 → 7060 [TX010] Transfer $306: A=7060 → 6754, B=1140 → 1446 [TX011] Transfer $707: B=1446 → 739, A=6754 → 7461 [TX012] Transfer $452: A=7461 → 7009, B=739 → 1191 [TX013] Transfer $477: B=1191 → 714, A=7009 → 7486 [TX014] Transfer $623: A=7486 → 6863, B=714 → 1337 [TX015] Transfer $884: A=6863 → 5979, B=1337 → 2221 [TX016] Transfer $1000: B=2221 → 1221, A=5979 → 6979 [TX017] Transfer $780: B=1221 → 441, A=6979 → 7759 [TX018] Transfer $165: B=441 → 276, A=7759 → 7924 [TX019] Transfer $127: A=7924 → 7797, B=276 → 403 [TX020] Transfer $128: B=403 → 275, A=7797 → 7925 [TX021] Transfer $53: A=7925 → 7872, B=275 → 328 [TX022] Transfer $223: B=328 → 105, A=7872 → 8095 [TX023] Transfer $3: B=105 → 102, A=8095 → 8098 [TX024] Transfer $2: B=102 → 100, A=8098 → 8100 [TX025] Transfer $529: A=8100 → 7571, B=100 → 629 [TX026] Transfer $317: B=629 → 312, A=7571 → 7888 [TX027] Transfer $25: B=312 → 287, A=7888 → 7913 [TX028] Transfer $63: B=287 → 224, A=7913 → 7976 [TX029] Transfer $51: A=7976 → 7925, B=224 → 275 [TX030] Transfer $508: A=7925 → 7417, B=275 → 783 [TX031] Transfer $551: B=783 → 232, A=7417 → 7968 [TX032] Transfer $443: A=7968 → 7525, B=232 → 675 [TX033] Transfer $746: A=7525 → 6779, B=675 → 1421 [TX034] Transfer $376: B=1421 → 1045, A=6779 → 7155 [TX035] Transfer $54: A=7155 → 7101, B=1045 → 1099 [TX036] Transfer $568: A=7101 → 6533, B=1099 → 1667 [TX037] Transfer $397: B=1667 → 1270, A=6533 → 6930 [TX038] Transfer $847: B=1270 → 423, A=6930 → 7777 [TX039] Transfer $1000: A=7777 → 6777, B=423 → 1423 [TX040] Transfer $384: A=6777 → 6393, B=1423 → 1807 [TX041] Transfer $775: B=1807 → 1032, A=6393 → 7168 [TX042] Transfer $618: A=7168 → 6550, B=1032 → 1650 [TX043] Transfer $48: B=1650 → 1602, A=6550 → 6598 [TX044] Transfer $732: A=6598 → 5866, B=1602 → 2334 [TX045] Transfer $533: B=2334 → 1801, A=5866 → 6399 [TX046] Transfer $622: B=1801 → 1179, A=6399 → 7021 [TX047] Transfer $955: A=7021 → 6066, B=1179 → 2134 [TX048] Transfer $404: B=2134 → 1730, A=6066 → 6470 [TX049] Transfer $521: B=1730 → 1209, A=6470 → 6991 [TX050] Transfer $488: B=1209 → 721, A=6991 → 7479 [TX051] Transfer $341: A=7479 → 7138, B=721 → 1062 [TX052] Transfer $599: A=7138 → 6539, B=1062 → 1661 [TX053] Transfer $613: B=1661 → 1048, A=6539 → 7152 [TX054] Transfer $673: B=1048 → 375, A=7152 → 7825 [TX055] Transfer $599: A=7825 → 7226, B=375 → 974 [TX056] Transfer $538: B=974 → 436, A=7226 → 7764 [TX057] Transfer $126: B=436 → 310, A=7764 → 7890 [TX058] Transfer $197: A=7890 → 7693, B=310 → 507 [TX059] Transfer $323: A=7693 → 7370, B=507 → 830 [TX060] Transfer $424: B=830 → 406, A=7370 → 7794 [TX061] Transfer $515: A=7794 → 7279, B=406 → 921 [TX062] Transfer $724: B=921 → 197, A=7279 → 8002 [TX063] Transfer $680: A=8003 → 7323, B=197 → 877 [TX064] Transfer $323: B=877 → 554, A=7323 → 7646 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX062	Mathematical calculation is incorrect	CALC_ERROR	64	{"bug_type": "CALC_ERROR", "bug_location": "TX062", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 64}
36	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $769: A=4000 → 3231, B=4200 → 4969 [TX002] Transfer $97: B=4969 → 4872, A=3231 → 3328 [TX003] Transfer $379: B=4872 → 4493, A=3328 → 3707 [TX004] Transfer $778: B=4493 → 3715, A=3707 → 4485 [TX005] Transfer $301: B=3715 → 3414, A=4485 → 4786 [TX006] Payment PAY1011: Transfer $126: B=3414 → 3288, A=4786 → 4912 [TX007] Transfer $541: B=3288 → 2747, A=4912 → 5453 [TX008] Transfer $714: B=2747 → 2033, A=5453 → 6167 [TX009] Transfer $113: A=6167 → 6054, B=2033 → 2146 [TX010] Transfer $743: A=6054 → 5311, B=2146 → 2889 [TX011] Transfer $625: B=2889 → 2264, A=5311 → 5936 [TX012] Transfer $540: B=2264 → 1724, A=5936 → 6476 [TX013] Transfer $631: B=1724 → 1093, A=6476 → 7107 [TX014] Transfer $506: B=1093 → 587, A=7107 → 7613 [TX015] Transfer $727: A=7613 → 6886, B=587 → 1314 [TX016] Transfer $3: B=1314 → 1311, A=6886 → 6889 [TX017] Transfer $478: A=6889 → 6411, B=1311 → 1789 [TX018] Transfer $820: A=6411 → 5591, B=1789 → 2609 [TX019] Transfer $48: B=2609 → 2561, A=5591 → 5639 [TX020] Transfer $575: B=2561 → 1986, A=5639 → 6214 [TX021] Transfer $657: A=6214 → 5557, B=1986 → 2643 [TX022] Transfer $262: A=5557 → 5295, B=2643 → 2905 [TX023] Transfer $309: A=5295 → 4986, B=2905 → 3214 [TX024] Transfer $118: B=3214 → 3096, A=4986 → 5104 [TX025] Payment PAY1011: Transfer $126: B=3096 → 2970, A=5104 → 5230 [TX026] Transfer $407: B=2970 → 2563, A=5230 → 5637 [TX027] Transfer $200: A=5637 → 5437, B=2563 → 2763 [TX028] Transfer $946: B=2763 → 1817, A=5437 → 6383 [TX029] Transfer $818: B=1817 → 999, A=6383 → 7201 [TX030] Transfer $495: A=7201 → 6706, B=999 → 1494 [TX031] Transfer $915: A=6706 → 5791, B=1494 → 2409 [TX032] Transfer $804: B=2409 → 1605, A=5791 → 6595 [TX033] Transfer $857: B=1605 → 748, A=6595 → 7452 [TX034] Transfer $570: B=748 → 178, A=7452 → 8022 [TX035] Transfer $593: A=8022 → 7429, B=178 → 771 [TX036] Transfer $69: B=771 → 702, A=7429 → 7498 [TX037] Transfer $862: A=7498 → 6636, B=702 → 1564 [TX038] Transfer $386: A=6636 → 6250, B=1564 → 1950 [TX039] Transfer $193: A=6250 → 6057, B=1950 → 2143 [TX040] Transfer $724: A=6057 → 5333, B=2143 → 2867 [TX041] Transfer $280: B=2867 → 2587, A=5333 → 5613 [TX042] Transfer $510: B=2587 → 2077, A=5613 → 6123 [TX043] Transfer $464: A=6123 → 5659, B=2077 → 2541 [TX044] Transfer $539: B=2541 → 2002, A=5659 → 6198 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX025	Payment PAY1011 processed twice	DUPLICATE_TXN	44	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX025", "explanation": "Payment PAY1011 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 44}
23	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $156: B=4200 → 4044, A=4000 → 4156 [TX002] Transfer $686: A=4156 → 3470, B=4044 → 4730 [TX003] Transfer $996: B=4730 → 3734, A=3470 → 4466 [TX004] Transfer $862: A=4466 → 3604, B=3734 → 4596 [TX005] Transfer $990: B=4596 → 3606, A=3604 → 4594 [TX006] Transfer $489: B=3606 → 3117, A=4594 → 5083 [TX007] Transfer $406: B=3117 → 2711, A=5083 → 5489 [TX008] Transfer $125: A=5489 → 5364, B=2711 → 2836 [TX009] Transfer $973: B=2836 → 1863, A=5364 → 6337 [TX010] Transfer $829: A=6337 → 5508, B=1863 → 2692 [TX011] Transfer $45: A=5508 → 5463, B=2692 → 2737 [TX012] Transfer $701: B=2737 → 2036, A=5463 → 6164 [TX013] Transfer $844: B=2036 → 1192, A=6164 → 7008 [TX014] Transfer $329: A=7008 → 6679, B=1192 → 1521 [TX015] Transfer $399: A=6679 → 6280, B=1521 → 1920 [TX016] Transfer $1929: B=1920 → -9, A=6280 → 8209 [TX017] Balance check: B=-9 [TX018] Balance check: B=-9 [TX019] Balance check: B=-9 [TX020] Transfer $949: A=8209 → 7260, B=-9 → 940 [TX021] Transfer $806: A=7260 → 6454, B=940 → 1746 [TX022] Transfer $900: B=1746 → 846, A=6454 → 7354 [TX023] Transfer $394: B=846 → 452, A=7354 → 7748 [TX024] Transfer $21: B=452 → 431, A=7748 → 7769 [TX025] Transfer $414: A=7769 → 7355, B=431 → 845 [TX026] Transfer $41: A=7355 → 7314, B=845 → 886 [TX027] Transfer $709: B=886 → 177, A=7314 → 8023 [TX028] Transfer $765: A=8023 → 7258, B=177 → 942 [TX029] Transfer $383: B=942 → 559, A=7258 → 7641 [TX030] Transfer $839: A=7641 → 6802, B=559 → 1398 [TX031] Transfer $289: B=1398 → 1109, A=6802 → 7091 [TX032] Transfer $997: B=1109 → 112, A=7091 → 8088 [TX033] Transfer $309: A=8088 → 7779, B=112 → 421 [TX034] Transfer $139: B=421 → 282, A=7779 → 7918 [TX035] Transfer $50: B=282 → 232, A=7918 → 7968 [TX036] Transfer $106: B=232 → 126, A=7968 → 8074 [TX037] Transfer $3: B=126 → 123, A=8074 → 8077 [TX038] Transfer $320: A=8077 → 7757, B=123 → 443 [TX039] Transfer $270: B=443 → 173, A=7757 → 8027 [TX040] Transfer $199: A=8027 → 7828, B=173 → 372 [TX041] Transfer $257: A=7828 → 7571, B=372 → 629 [TX042] Transfer $53: A=7571 → 7518, B=629 → 682 [TX043] Transfer $282: B=682 → 400, A=7518 → 7800 [TX044] Transfer $260: B=400 → 140, A=7800 → 8060 [TX045] Transfer $3: B=140 → 137, A=8060 → 8063 [TX046] Transfer $502: A=8063 → 7561, B=137 → 639 [TX047] Transfer $487: B=639 → 152, A=7561 → 8048 [TX048] Transfer $12: B=152 → 140, A=8048 → 8060 [TX049] Transfer $20: B=140 → 120, A=8060 → 8080 [TX050] Transfer $52: A=8080 → 8028, B=120 → 172 [TX051] Transfer $879: A=8028 → 7149, B=172 → 1051 [TX052] Transfer $695: A=7149 → 6454, B=1051 → 1746 [TX053] Transfer $669: A=6454 → 5785, B=1746 → 2415 [TX054] Transfer $887: B=2415 → 1528, A=5785 → 6672 [TX055] Transfer $935: A=6672 → 5737, B=1528 → 2463 [TX056] Transfer $617: A=5737 → 5120, B=2463 → 3080 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	NEGATIVE_BAL	TX016	Account balance goes negative	NEGATIVE_BAL	56	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX016", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 56}
39	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $951: A=4000 → 3049, B=4200 → 5151 [TX002] Transfer $696: B=5151 → 4455, A=3049 → 3745 [TX003] Transfer $101: B=4455 → 4354, A=3745 → 3846 [TX004] Transfer $627: B=4354 → 3727, A=3846 → 4473 [TX005] Transfer $278: B=3727 → 3449, A=4473 → 4751 [TX006] Transfer $263: B=3449 → 3186, A=4751 → 5014 [TX007] Transfer $793: B=3186 → 2393, A=5014 → 5807 [TX008] Transfer $534: A=5807 → 5273, B=2393 → 2927 [TX009] Transfer $322: B=2927 → 2605, A=5273 → 5595 [TX010] Transfer $853: A=5595 → 4742, B=2605 → 3458 [TX011] Transfer $423: A=4742 → 4319, B=3458 → 3881 [TX012] Transfer $703: A=4319 → 3616, B=3881 → 4584 [TX013] Transfer $226: B=4584 → 4358, A=3616 → 3842 [TX014] Transfer $199: B=4358 → 4159, A=3842 → 4041 [TX015] Transfer $636: A=4041 → 3405, B=4159 → 4795 [TX016] Transfer $963: A=3405 → 2442, B=4795 → 5758 [TX017] Transfer $727: A=2442 → 1715, B=5758 → 6485 [TX018] Transfer $878: A=1715 → 837, B=6485 → 7363 [TX019] Transfer $674: A=837 → 163, B=7363 → 8037 [TX020] Transfer $46: A=163 → 117, B=8037 → 8083 [TX021] Transfer $11: A=117 → 106, B=8083 → 8094 [TX022] Transfer $656: B=8094 → 7438, A=106 → 762 [TX023] Transfer $789: B=7438 → 6649, A=762 → 1551 [TX024] Transfer $265: B=6649 → 6384, A=1551 → 1816 [TX025] Transfer $285: A=1816 → 1531, B=6384 → 6669 [TX026] Transfer $399: A=1531 → 1132, B=6669 → 7068 [TX027] Transfer $266: B=7068 → 6802, A=1132 → 1398 [TX028] Thread T1: READ B=6802 [TX029] Thread T2: READ B=6802 [TX030] Thread T1: COMMIT B=6802 → 6707 [TX031] Thread T2: COMMIT B=6802 → 6640 [TX032] Transfer $952: A=1398 → 446, B=6640 → 7592 [TX033] Transfer $93: A=446 → 353, B=7592 → 7685 [TX034] Transfer $149: B=7685 → 7536, A=353 → 502 [TX035] Transfer $630: B=7536 → 6906, A=502 → 1132 [TX036] Transfer $734: A=1132 → 398, B=6906 → 7640 [TX037] Transfer $37: B=7640 → 7603, A=398 → 435 [TX038] Transfer $294: A=435 → 141, B=7603 → 7897 [TX039] Transfer $21: B=7897 → 7876, A=141 → 162 [TX040] Transfer $670: B=7876 → 7206, A=162 → 832 [TX041] Transfer $682: A=832 → 150, B=7206 → 7888 [TX042] Transfer $157: B=7888 → 7731, A=150 → 307 [TX043] Transfer $590: B=7731 → 7141, A=307 → 897 [TX044] Transfer $491: A=897 → 406, B=7141 → 7632 [TX045] Transfer $866: B=7632 → 6766, A=406 → 1272 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	LOST_UPDATE	TX031	Thread T2 overwrites T1's change	LOST_UPDATE	45	{"bug_type": "LOST_UPDATE", "bug_location": "TX031", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 45}
40	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $395: A=4000 → 3605, B=4200 → 4595 [TX002] Transfer $582: B=4595 → 4013, A=3605 → 4187 [TX003] Payment PAY1013: Transfer $700: B=4013 → 3313, A=4187 → 4887 [TX004] Transfer $58: B=3313 → 3255, A=4887 → 4945 [TX005] Transfer $549: A=4945 → 4396, B=3255 → 3804 [TX006] Transfer $863: B=3804 → 2941, A=4396 → 5259 [TX007] Transfer $665: B=2941 → 2276, A=5259 → 5924 [TX008] Transfer $569: A=5924 → 5355, B=2276 → 2845 [TX009] Transfer $678: A=5355 → 4677, B=2845 → 3523 [TX010] Transfer $714: A=4677 → 3963, B=3523 → 4237 [TX011] Transfer $647: B=4237 → 3590, A=3963 → 4610 [TX012] Transfer $88: B=3590 → 3502, A=4610 → 4698 [TX013] Transfer $145: B=3502 → 3357, A=4698 → 4843 [TX014] Transfer $27: A=4843 → 4816, B=3357 → 3384 [TX015] Transfer $400: A=4816 → 4416, B=3384 → 3784 [TX016] Transfer $513: A=4416 → 3903, B=3784 → 4297 [TX017] Transfer $39: B=4297 → 4258, A=3903 → 3942 [TX018] Transfer $347: B=4258 → 3911, A=3942 → 4289 [TX019] Transfer $123: A=4289 → 4166, B=3911 → 4034 [TX020] Transfer $964: A=4166 → 3202, B=4034 → 4998 [TX021] Transfer $949: A=3202 → 2253, B=4998 → 5947 [TX022] Transfer $755: A=2253 → 1498, B=5947 → 6702 [TX023] Transfer $671: A=1498 → 827, B=6702 → 7373 [TX024] Transfer $635: A=827 → 192, B=7373 → 8008 [TX025] Transfer $91: A=192 → 101, B=8008 → 8099 [TX026] Balance check: A=101 [TX027] Balance check: A=101 [TX028] Transfer $469: B=8099 → 7630, A=101 → 570 [TX029] Transfer $420: A=570 → 150, B=7630 → 8050 [TX030] Transfer $33: A=150 → 117, B=8050 → 8083 [TX031] Transfer $8: A=117 → 109, B=8083 → 8091 [TX032] Transfer $832: B=8091 → 7259, A=109 → 941 [TX033] Transfer $125: B=7259 → 7134, A=941 → 1066 [TX034] Transfer $858: A=1066 → 208, B=7134 → 7992 [TX035] Transfer $77: A=208 → 131, B=7992 → 8069 [TX036] Transfer $4: A=131 → 127, B=8069 → 8073 [TX037] Transfer $6: A=127 → 121, B=8073 → 8079 [TX038] Payment PAY1013: Transfer $700: B=8079 → 7379, A=121 → 821 [TX039] Transfer $715: B=7379 → 6664, A=821 → 1536 [TX040] Transfer $451: B=6664 → 6213, A=1536 → 1987 [TX041] Transfer $138: A=1987 → 1849, B=6213 → 6351 [TX042] Transfer $798: A=1849 → 1051, B=6351 → 7149 [TX043] Transfer $902: A=1051 → 149, B=7149 → 8051 [TX044] Transfer $8: B=8051 → 8043, A=149 → 157 [TX045] Transfer $7: A=157 → 150, B=8043 → 8050 [TX046] Transfer $712: B=8050 → 7338, A=150 → 862 [TX047] Transfer $213: B=7338 → 7125, A=862 → 1075 [TX048] Transfer $537: A=1075 → 538, B=7125 → 7662 [TX049] Transfer $246: B=7662 → 7416, A=538 → 784 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX038	Payment PAY1013 processed twice	DUPLICATE_TXN	49	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX038", "explanation": "Payment PAY1013 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 49}
18	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $500: B=4200 → 3700, A=4000 → 4500 [TX002] Transfer $503: A=4500 → 3997, B=3700 → 4203 [TX003] Transfer $193: B=4203 → 4010, A=3997 → 4190 [TX004] Transfer $636: B=4010 → 3374, A=4190 → 4826 [TX005] Transfer $976: A=4826 → 3850, B=3374 → 4350 [TX006] Transfer $141: A=3850 → 3709, B=4350 → 4491 [TX007] Transfer $988: A=3709 → 2721, B=4491 → 5479 [TX008] Transfer $703: B=5479 → 4776, A=2721 → 3424 [TX009] Transfer $729: B=4776 → 4047, A=3424 → 4153 [TX010] Transfer $173: B=4047 → 3874, A=4153 → 4326 [TX011] Transfer $816: A=4326 → 3510, B=3874 → 4690 [TX012] Transfer $35: A=3510 → 3475, B=4690 → 4725 [TX013] Transfer $552: B=4725 → 4173, A=3475 → 4027 [TX014] Transfer $801: B=4173 → 3372, A=4027 → 4828 [TX015] Transfer $564: B=3372 → 2808, A=4828 → 5392 [TX016] Transfer $276: A=5392 → 5116, B=2808 → 3084 [TX017] Transfer $780: B=3084 → 2304, A=5116 → 5896 [TX018] Transfer $437: B=2304 → 1867, A=5896 → 6333 [TX019] Transfer $306: A=6333 → 6027, B=1867 → 2173 [TX020] Transfer $271: A=6027 → 5756, B=2173 → 2444 [TX021] Transfer $451: B=2444 → 1993, A=5756 → 6207 [TX022] Transfer $216: A=6207 → 5991, B=1993 → 2209 [TX023] Transfer $171: B=2209 → 2038, A=5991 → 6162 [TX024] Transfer $835: A=6162 → 5327, B=2038 → 2873 [TX025] Transfer $585: A=5327 → 4742, B=2873 → 3458 [TX026] Transfer $613: B=3458 → 2845, A=4742 → 5354 [TX027] Transfer $298: B=2845 → 2547, A=5355 → 5653 [TX028] Transfer $140: B=2547 → 2407, A=5653 → 5793 [TX029] Transfer $285: B=2407 → 2122, A=5793 → 6078 [TX030] Transfer $257: A=6078 → 5821, B=2122 → 2379 [TX031] Transfer $850: A=5821 → 4971, B=2379 → 3229 [TX032] Transfer $503: A=4971 → 4468, B=3229 → 3732 [TX033] Transfer $644: A=4468 → 3824, B=3732 → 4376 [TX034] Transfer $464: B=4376 → 3912, A=3824 → 4288 [TX035] Transfer $414: A=4288 → 3874, B=3912 → 4326 [TX036] Transfer $467: B=4326 → 3859, A=3874 → 4341 [TX037] Transfer $597: B=3859 → 3262, A=4341 → 4938 [TX038] Transfer $750: A=4938 → 4188, B=3262 → 4012 [TX039] Transfer $872: B=4012 → 3140, A=4188 → 5060 [TX040] Transfer $225: A=5060 → 4835, B=3140 → 3365 [TX041] Transfer $508: B=3365 → 2857, A=4835 → 5343 [TX042] Transfer $850: B=2857 → 2007, A=5343 → 6193 [TX043] Transfer $562: B=2007 → 1445, A=6193 → 6755 [TX044] Transfer $809: A=6755 → 5946, B=1445 → 2254 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	CALC_ERROR	TX026	Mathematical calculation is incorrect	CALC_ERROR	44	{"bug_type": "CALC_ERROR", "bug_location": "TX026", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 44}
66	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $486: B=4200 → 3714, A=4000 → 4486 [TX002] Transfer $218: A=4486 → 4268, B=3714 → 3932 [TX003] Transfer $278: A=4268 → 3990, B=3932 → 4210 [TX004] Transfer $87: B=4210 → 4123, A=3990 → 4077 [TX005] Transfer $282: A=4077 → 3795, B=4123 → 4405 [TX006] Transfer $307: B=4405 → 4098, A=3795 → 4102 [TX007] Transfer $539: B=4098 → 3559, A=4102 → 4641 [TX008] Transfer $190: A=4641 → 4451, B=3559 → 3749 [TX009] Transfer $918: A=4451 → 3533, B=3749 → 4667 [TX010] Transfer $988: B=4667 → 3679, A=3533 → 4521 [TX011] Transfer $205: B=3679 → 3474, A=4521 → 4726 [TX012] Transfer $495: B=3474 → 2979, A=4726 → 5221 [TX013] Payment PAY1021: Transfer $990: B=2979 → 1989, A=5221 → 6211 [TX014] Transfer $936: B=1989 → 1053, A=6211 → 7147 [TX015] Transfer $576: B=1053 → 477, A=7147 → 7723 [TX016] Transfer $742: A=7723 → 6981, B=477 → 1219 [TX017] Payment PAY1021: Transfer $990: B=1219 → 229, A=6981 → 7971 [TX018] Transfer $682: A=7971 → 7289, B=229 → 911 [TX019] Transfer $156: B=911 → 755, A=7289 → 7445 [TX020] Transfer $513: B=755 → 242, A=7445 → 7958 [TX021] Transfer $106: B=242 → 136, A=7958 → 8064 [TX022] Transfer $30: B=136 → 106, A=8064 → 8094 [TX023] Transfer $656: A=8094 → 7438, B=106 → 762 [TX024] Transfer $225: A=7438 → 7213, B=762 → 987 [TX025] Transfer $715: A=7213 → 6498, B=987 → 1702 [TX026] Transfer $223: A=6498 → 6275, B=1702 → 1925 [TX027] Transfer $977: B=1925 → 948, A=6275 → 7252 [TX028] Transfer $381: A=7252 → 6871, B=948 → 1329 [TX029] Transfer $311: B=1329 → 1018, A=6871 → 7182 [TX030] Transfer $718: B=1018 → 300, A=7182 → 7900 [TX031] Transfer $107: B=300 → 193, A=7900 → 8007 [TX032] Transfer $47: B=193 → 146, A=8007 → 8054 [TX033] Transfer $9: B=146 → 137, A=8054 → 8063 [TX034] Transfer $440: A=8063 → 7623, B=137 → 577 [TX035] Transfer $285: B=577 → 292, A=7623 → 7908 [TX036] Transfer $392: A=7908 → 7516, B=292 → 684 [TX037] Transfer $292: B=684 → 392, A=7516 → 7808 [TX038] Transfer $827: A=7808 → 6981, B=392 → 1219 [TX039] Transfer $667: A=6981 → 6314, B=1219 → 1886 [TX040] Transfer $108: A=6314 → 6206, B=1886 → 1994 [TX041] Transfer $650: B=1994 → 1344, A=6206 → 6856 [TX042] Transfer $685: B=1344 → 659, A=6856 → 7541 [TX043] Transfer $218: B=659 → 441, A=7541 → 7759 [TX044] Transfer $566: A=7759 → 7193, B=441 → 1007 [TX045] Transfer $202: B=1007 → 805, A=7193 → 7395 [TX046] Transfer $361: B=805 → 444, A=7395 → 7756 [TX047] Transfer $332: B=444 → 112, A=7756 → 8088 [TX048] Transfer $7: B=112 → 105, A=8088 → 8095 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX017	Payment PAY1021 processed twice	DUPLICATE_TXN	48	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX017", "explanation": "Payment PAY1021 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 48}
61	Analyze this banking transaction log for bugs. Each operation shows the complete state change. INITIAL STATE: { "account_A": 4000, "account_B": 4200, "total": 8200 } RULES: 1. Total money must remain constant (conservation) 2. No account can go negative 3. All calculations must be mathematically correct TRANSACTION LOG: [TX001] Transfer $417: B=4200 → 3783, A=4000 → 4417 [TX002] Transfer $934: A=4417 → 3483, B=3783 → 4717 [TX003] Transfer $721: A=3483 → 2762, B=4717 → 5438 [TX004] Transfer $758: B=5438 → 4680, A=2762 → 3520 [TX005] Payment PAY1020: Transfer $989: A=3520 → 2531, B=4680 → 5669 [TX006] Transfer $181: A=2531 → 2350, B=5669 → 5850 [TX007] Transfer $861: A=2350 → 1489, B=5850 → 6711 [TX008] Transfer $977: A=1489 → 512, B=6711 → 7688 [TX009] Transfer $255: A=512 → 257, B=7688 → 7943 [TX010] Transfer $384: B=7943 → 7559, A=257 → 641 [TX011] Transfer $257: A=641 → 384, B=7559 → 7816 [TX012] Transfer $155: A=384 → 229, B=7816 → 7971 [TX013] Transfer $273: B=7971 → 7698, A=229 → 502 [TX014] Transfer $379: A=502 → 123, B=7698 → 8077 [TX015] Transfer $947: B=8077 → 7130, A=123 → 1070 [TX016] Transfer $959: B=7130 → 6171, A=1070 → 2029 [TX017] Transfer $60: B=6171 → 6111, A=2029 → 2089 [TX018] Transfer $632: B=6111 → 5479, A=2089 → 2721 [TX019] Transfer $307: B=5479 → 5172, A=2721 → 3028 [TX020] Transfer $7: B=5172 → 5165, A=3028 → 3035 [TX021] Transfer $413: B=5165 → 4752, A=3035 → 3448 [TX022] Transfer $105: B=4752 → 4647, A=3448 → 3553 [TX023] Transfer $204: B=4647 → 4443, A=3553 → 3757 [TX024] Transfer $422: A=3757 → 3335, B=4443 → 4865 [TX025] Transfer $9: A=3335 → 3326, B=4865 → 4874 [TX026] Transfer $233: A=3326 → 3093, B=4874 → 5107 [TX027] Transfer $385: B=5107 → 4722, A=3093 → 3478 [TX028] Transfer $440: B=4722 → 4282, A=3478 → 3918 [TX029] Transfer $113: A=3918 → 3805, B=4282 → 4395 [TX030] Transfer $167: B=4395 → 4228, A=3805 → 3972 [TX031] Transfer $767: A=3972 → 3205, B=4228 → 4995 [TX032] Transfer $369: B=4995 → 4626, A=3205 → 3574 [TX033] Transfer $196: A=3574 → 3378, B=4626 → 4822 [TX034] Transfer $138: B=4822 → 4684, A=3378 → 3516 [TX035] Transfer $763: B=4684 → 3921, A=3516 → 4279 [TX036] Payment PAY1020: Transfer $989: A=4279 → 3290, B=3921 → 4910 [TX037] Transfer $166: B=4910 → 4744, A=3290 → 3456 [TX038] Transfer $984: A=3456 → 2472, B=4744 → 5728 [TX039] Transfer $433: B=5728 → 5295, A=2472 → 2905 [TX040] Transfer $821: B=5295 → 4474, A=2905 → 3726 [TX041] Transfer $771: A=3726 → 2955, B=4474 → 5245 [TX042] Transfer $136: B=5245 → 5109, A=2955 → 3091 [TX043] Transfer $813: A=3091 → 2278, B=5109 → 5922 [TX044] Transfer $161: A=2278 → 2117, B=5922 → 6083 [TX045] Transfer $787: B=6083 → 5296, A=2117 → 2904 POSSIBLE BUG TYPES (choose exactly one): - CALC_ERROR: Mathematical calculation is incorrect - NEGATIVE_BAL: Account balance becomes negative - LOST_UPDATE: Concurrent update causes lost transaction - DUPLICATE_TXN: Same transaction processed multiple times Identify the SINGLE bug if any exists. Respond with ONLY a JSON object: {"bug_type": "<type>", "bug_location": "<TX_ID>" Your response:	DUPLICATE_TXN	TX036	Payment PAY1020 processed twice	DUPLICATE_TXN	45	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX036", "explanation": "Payment PAY1020 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 45}

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