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bank_transactions_nop_35

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sample_id int64 0 99	prompt stringlengths 2.08k 2.94k	bug_type stringclasses 4 values	bug_location stringlengths 5 5	explanation stringlengths 29 37	metadata_bug_type stringclasses 4 values	n_operations int64 28 42	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 $914: B=4200 → 3286, A=4000 → 4914 [TX002] Transfer $753: A=4914 → 4161, B=3286 → 4039 [TX003] Transfer $915: A=4161 → 3246, B=4039 → 4954 [TX004] Transfer $834: A=3246 → 2412, B=4954 → 5788 [TX005] Transfer $930: B=5788 → 4858, A=2412 → 3342 [TX006] Transfer $558: A=3342 → 2784, B=4858 → 5416 [TX007] Transfer $376: B=5416 → 5040, A=2784 → 3158 [TX008] Transfer $139: A=3160 → 3021, B=5040 → 5179 [TX009] Transfer $408: B=5179 → 4771, A=3021 → 3429 [TX010] Transfer $680: B=4771 → 4091, A=3429 → 4109 [TX011] Transfer $777: A=4109 → 3332, B=4091 → 4868 [TX012] Transfer $165: A=3332 → 3167, B=4868 → 5033 [TX013] Transfer $755: A=3167 → 2412, B=5033 → 5788 [TX014] Transfer $43: B=5788 → 5745, A=2412 → 2455 [TX015] Transfer $239: A=2455 → 2216, B=5745 → 5984 [TX016] Transfer $380: A=2216 → 1836, B=5984 → 6364 [TX017] Transfer $686: A=1836 → 1150, B=6364 → 7050 [TX018] Transfer $399: A=1150 → 751, B=7050 → 7449 [TX019] Transfer $904: B=7449 → 6545, A=751 → 1655 [TX020] Transfer $666: A=1655 → 989, B=6545 → 7211 [TX021] Transfer $722: B=7211 → 6489, A=989 → 1711 [TX022] Transfer $594: B=6489 → 5895, A=1711 → 2305 [TX023] Transfer $671: A=2305 → 1634, B=5895 → 6566 [TX024] Transfer $603: B=6566 → 5963, A=1634 → 2237 [TX025] Transfer $387: A=2237 → 1850, B=5963 → 6350 [TX026] Transfer $363: A=1850 → 1487, B=6350 → 6713 [TX027] Transfer $813: B=6713 → 5900, A=1487 → 2300 [TX028] Transfer $515: B=5900 → 5385, A=2300 → 2815 [TX029] Transfer $171: A=2815 → 2644, B=5385 → 5556 [TX030] Transfer $528: A=2644 → 2116, B=5556 → 6084 [TX031] Transfer $155: B=6084 → 5929, A=2116 → 2271 [TX032] Transfer $372: A=2271 → 1899, B=5929 → 6301 [TX033] Transfer $426: A=1899 → 1473, B=6301 → 6727 [TX034] Transfer $495: B=6727 → 6232, A=1473 → 1968 [TX035] Transfer $217: B=6232 → 6015, A=1968 → 2185 [TX036] Transfer $24: A=2185 → 2161, B=6015 → 6039 [TX037] Transfer $132: A=2161 → 2029, B=6039 → 6171 [TX038] Transfer $646: A=2029 → 1383, B=6171 → 6817 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	38	{"bug_type": "CALC_ERROR", "bug_location": "TX007", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 38}
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 $419: A=4000 → 3581, B=4200 → 4619 [TX002] Transfer $647: B=4619 → 3972, A=3581 → 4228 [TX003] Transfer $325: B=3972 → 3647, A=4228 → 4553 [TX004] Transfer $691: A=4553 → 3862, B=3647 → 4338 [TX005] Transfer $658: A=3862 → 3204, B=4338 → 4996 [TX006] Transfer $3207: A=3204 → -3, B=4996 → 8203 [TX007] Transfer $298: B=8203 → 7905, A=-3 → 295 [TX008] Transfer $290: B=7905 → 7615, A=295 → 585 [TX009] Transfer $406: B=7615 → 7209, A=585 → 991 [TX010] Transfer $162: A=991 → 829, B=7209 → 7371 [TX011] Transfer $402: A=829 → 427, B=7371 → 7773 [TX012] Transfer $307: B=7773 → 7466, A=427 → 734 [TX013] Transfer $568: B=7466 → 6898, A=734 → 1302 [TX014] Transfer $44: A=1302 → 1258, B=6898 → 6942 [TX015] Transfer $552: A=1258 → 706, B=6942 → 7494 [TX016] Transfer $217: A=706 → 489, B=7494 → 7711 [TX017] Transfer $424: B=7711 → 7287, A=489 → 913 [TX018] Transfer $190: A=913 → 723, B=7287 → 7477 [TX019] Transfer $200: A=723 → 523, B=7477 → 7677 [TX020] Transfer $345: A=523 → 178, B=7677 → 8022 [TX021] Transfer $72: A=178 → 106, B=8022 → 8094 [TX022] Transfer $2: A=106 → 104, B=8094 → 8096 [TX023] Transfer $204: B=8096 → 7892, A=104 → 308 [TX024] Transfer $367: B=7892 → 7525, A=308 → 675 [TX025] Transfer $104: A=675 → 571, B=7525 → 7629 [TX026] Transfer $923: B=7629 → 6706, A=571 → 1494 [TX027] Transfer $499: A=1494 → 995, B=6706 → 7205 [TX028] Transfer $633: B=7205 → 6572, A=995 → 1628 [TX029] Transfer $581: B=6572 → 5991, A=1628 → 2209 [TX030] Transfer $983: B=5991 → 5008, A=2209 → 3192 [TX031] Transfer $6: B=5008 → 5002, A=3192 → 3198 [TX032] Transfer $806: B=5002 → 4196, A=3198 → 4004 [TX033] Transfer $285: A=4004 → 3719, B=4196 → 4481 [TX034] Transfer $697: B=4481 → 3784, A=3719 → 4416 [TX035] Transfer $475: B=3784 → 3309, A=4416 → 4891 [TX036] Transfer $795: B=3309 → 2514, A=4891 → 5686 [TX037] Transfer $566: B=2514 → 1948, A=5686 → 6252 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	TX006	Account balance goes negative	NEGATIVE_BAL	37	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX006", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 37}
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 $372: A=4000 → 3628, B=4200 → 4572 [TX002] Transfer $387: A=3628 → 3241, B=4572 → 4959 [TX003] Transfer $950: B=4959 → 4009, A=3241 → 4191 [TX004] Transfer $366: A=4191 → 3825, B=4009 → 4375 [TX005] Transfer $969: B=4375 → 3406, A=3825 → 4794 [TX006] Transfer $529: A=4794 → 4265, B=3406 → 3935 [TX007] Transfer $995: B=3935 → 2940, A=4265 → 5260 [TX008] Transfer $252: A=5260 → 5008, B=2940 → 3192 [TX009] Transfer $248: A=5008 → 4760, B=3192 → 3440 [TX010] Transfer $311: B=3440 → 3129, A=4760 → 5071 [TX011] Transfer $796: A=5071 → 4275, B=3129 → 3925 [TX012] Transfer $887: A=4275 → 3388, B=3925 → 4812 [TX013] Transfer $649: B=4812 → 4163, A=3388 → 4037 [TX014] Transfer $13: B=4163 → 4150, A=4037 → 4050 [TX015] Transfer $86: A=4050 → 3964, B=4150 → 4236 [TX016] Transfer $658: A=3964 → 3306, B=4236 → 4894 [TX017] Transfer $602: A=3306 → 2704, B=4894 → 5496 [TX018] Transfer $712: B=5496 → 4784, A=2704 → 3416 [TX019] Transfer $395: A=3416 → 3021, B=4784 → 5179 [TX020] Transfer $307: B=5179 → 4872, A=3021 → 3328 [TX021] Transfer $335: A=3328 → 2993, B=4872 → 5207 [TX022] Transfer $417: A=2993 → 2576, B=5207 → 5624 [TX023] Transfer $571: A=2576 → 2005, B=5624 → 6195 [TX024] Transfer $533: B=6195 → 5662, A=2005 → 2538 [TX025] Transfer $990: A=2538 → 1548, B=5662 → 6653 [TX026] Transfer $7: A=1548 → 1541, B=6652 → 6659 [TX027] Transfer $127: B=6659 → 6532, A=1541 → 1668 [TX028] Transfer $590: A=1668 → 1078, B=6532 → 7122 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	28	{"bug_type": "CALC_ERROR", "bug_location": "TX025", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 28}
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 $681: B=4200 → 3519, A=4000 → 4681 [TX002] Transfer $989: A=4681 → 3692, B=3519 → 4508 [TX003] Transfer $516: A=3692 → 3176, B=4508 → 5024 [TX004] Transfer $897: B=5024 → 4127, A=3176 → 4073 [TX005] Transfer $540: B=4127 → 3587, A=4073 → 4613 [TX006] Transfer $741: B=3587 → 2846, A=4613 → 5354 [TX007] Transfer $893: A=5354 → 4461, B=2846 → 3739 [TX008] Transfer $482: A=4461 → 3979, B=3739 → 4221 [TX009] Transfer $640: B=4221 → 3581, A=3979 → 4619 [TX010] Transfer $874: B=3581 → 2707, A=4619 → 5493 [TX011] Transfer $979: B=2707 → 1728, A=5493 → 6472 [TX012] Transfer $895: B=1728 → 833, A=6472 → 7367 [TX013] Transfer $242: A=7367 → 7125, B=833 → 1075 [TX014] Transfer $766: B=1075 → 309, A=7125 → 7891 [TX015] Transfer $102: A=7891 → 7789, B=309 → 411 [TX016] Transfer $172: A=7789 → 7617, B=411 → 583 [TX017] Transfer $25: B=583 → 558, A=7617 → 7642 [TX018] Transfer $152: B=558 → 406, A=7642 → 7794 [TX019] Transfer $222: B=406 → 184, A=7794 → 8016 [TX020] Transfer $545: A=8016 → 7471, B=184 → 729 [TX021] Transfer $176: B=729 → 553, A=7471 → 7647 [TX022] Transfer $626: A=7647 → 7021, B=553 → 1179 [TX023] Transfer $511: B=1179 → 668, A=7021 → 7532 [TX024] Transfer $474: A=7532 → 7058, B=668 → 1142 [TX025] Transfer $263: B=1142 → 879, A=7058 → 7321 [TX026] Transfer $924: A=7321 → 6397, B=879 → 1803 [TX027] Transfer $1806: B=1803 → -3, A=6397 → 8203 [TX028] Balance check: B=-3 [TX029] Balance check: B=-3 [TX030] Balance check: B=-3 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	TX027	Account balance goes negative	NEGATIVE_BAL	30	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX027", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 30}
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 $190: B=4200 → 4010, A=4000 → 4190 [TX002] Transfer $683: A=4190 → 3507, B=4010 → 4693 [TX003] Transfer $153: B=4693 → 4540, A=3507 → 3660 [TX004] Transfer $554: B=4540 → 3986, A=3660 → 4214 [TX005] Transfer $126: A=4214 → 4088, B=3986 → 4112 [TX006] Transfer $955: A=4088 → 3133, B=4112 → 5067 [TX007] Transfer $972: B=5067 → 4095, A=3133 → 4105 [TX008] Transfer $161: B=4095 → 3934, A=4105 → 4266 [TX009] Transfer $664: A=4266 → 3602, B=3934 → 4598 [TX010] Transfer $919: B=4598 → 3679, A=3602 → 4521 [TX011] Transfer $820: B=3679 → 2859, A=4521 → 5341 [TX012] Transfer $707: B=2859 → 2152, A=5341 → 6048 [TX013] Transfer $923: A=6048 → 5125, B=2152 → 3075 [TX014] Transfer $696: A=5125 → 4429, B=3075 → 3771 [TX015] Transfer $27: A=4429 → 4402, B=3771 → 3798 [TX016] Transfer $458: B=3798 → 3340, A=4402 → 4860 [TX017] Transfer $336: B=3340 → 3004, A=4860 → 5196 [TX018] Transfer $599: A=5196 → 4597, B=3004 → 3603 [TX019] Transfer $202: A=4597 → 4395, B=3603 → 3805 [TX020] Transfer $553: A=4395 → 3842, B=3805 → 4358 [TX021] Transfer $526: B=4358 → 3832, A=3842 → 4368 [TX022] Transfer $504: B=3832 → 3328, A=4368 → 4872 [TX023] Transfer $932: B=3328 → 2396, A=4872 → 5804 [TX024] Transfer $153: B=2396 → 2243, A=5804 → 5957 [TX025] Transfer $397: B=2243 → 1846, A=5957 → 6354 [TX026] Transfer $293: B=1846 → 1553, A=6354 → 6647 [TX027] Transfer $317: B=1553 → 1236, A=6647 → 6964 [TX028] Transfer $222: B=1236 → 1014, A=6964 → 7186 [TX029] Thread T1: READ B=1014 [TX030] Thread T2: READ B=1014 [TX031] Thread T1: COMMIT B=1014 → 858 [TX032] Thread T2: COMMIT B=1014 → 851 [TX033] Transfer $747: B=851 → 104, A=7186 → 7933 [TX034] Transfer $2: B=104 → 102, A=7933 → 7935 [TX035] Transfer $214: A=7935 → 7721, B=102 → 316 [TX036] Transfer $136: B=316 → 180, A=7721 → 7857 [TX037] Transfer $77: B=180 → 103, A=7857 → 7934 [TX038] Transfer $2: B=103 → 101, A=7934 → 7936 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	TX032	Thread T2 overwrites T1's change	LOST_UPDATE	38	{"bug_type": "LOST_UPDATE", "bug_location": "TX032", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 38}
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 $845: B=4200 → 3355, A=4000 → 4845 [TX002] Transfer $753: B=3355 → 2602, A=4845 → 5598 [TX003] Transfer $81: A=5598 → 5517, B=2602 → 2683 [TX004] Transfer $105: A=5517 → 5412, B=2683 → 2788 [TX005] Transfer $196: A=5412 → 5216, B=2788 → 2984 [TX006] Transfer $585: A=5216 → 4631, B=2984 → 3569 [TX007] Transfer $766: A=4631 → 3865, B=3569 → 4335 [TX008] Transfer $692: A=3865 → 3173, B=4335 → 5027 [TX009] Transfer $906: B=5027 → 4121, A=3173 → 4079 [TX010] Transfer $813: A=4079 → 3266, B=4121 → 4934 [TX011] Transfer $518: A=3266 → 2748, B=4934 → 5452 [TX012] Transfer $548: B=5452 → 4904, A=2748 → 3296 [TX013] Transfer $926: B=4904 → 3978, A=3296 → 4222 [TX014] Transfer $867: B=3978 → 3111, A=4222 → 5089 [TX015] Transfer $784: B=3111 → 2327, A=5089 → 5873 [TX016] Transfer $625: B=2327 → 1702, A=5873 → 6498 [TX017] Transfer $386: A=6498 → 6112, B=1702 → 2088 [TX018] Transfer $986: B=2088 → 1102, A=6112 → 7098 [TX019] Transfer $984: B=1102 → 118, A=7098 → 8082 [TX020] Transfer $3: B=118 → 115, A=8082 → 8085 [TX021] Transfer $10: B=115 → 105, A=8085 → 8095 [TX022] Transfer $8: A=8095 → 8087, B=105 → 113 [TX023] Transfer $5: B=113 → 108, A=8087 → 8092 [TX024] Transfer $8: B=108 → 100, A=8092 → 8100 [TX025] Balance check: B=100 [TX026] Transfer $473: A=8100 → 7627, B=100 → 573 [TX027] Transfer $72: B=573 → 501, A=7627 → 7699 [TX028] Transfer $300: B=501 → 201, A=7699 → 7998 [TX029] Transfer $832: A=7999 → 7167, B=201 → 1033 [TX030] Transfer $586: B=1033 → 447, A=7167 → 7753 [TX031] Transfer $41: B=447 → 406, A=7753 → 7794 [TX032] Transfer $90: B=406 → 316, A=7794 → 7884 [TX033] Transfer $154: B=316 → 162, A=7884 → 8038 [TX034] Transfer $48: B=162 → 114, A=8038 → 8086 [TX035] Transfer $14: B=114 → 100, A=8086 → 8100 [TX036] Transfer $358: A=8100 → 7742, B=100 → 458 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	TX028	Mathematical calculation is incorrect	CALC_ERROR	36	{"bug_type": "CALC_ERROR", "bug_location": "TX028", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 36}
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 $158: A=4000 → 3842, B=4200 → 4358 [TX002] Transfer $612: A=3842 → 3230, B=4358 → 4970 [TX003] Thread T1: READ A=3230 [TX004] Thread T2: READ A=3230 [TX005] Thread T1: COMMIT A=3230 → 3082 [TX006] Thread T2: COMMIT A=3230 → 3083 [TX007] Transfer $996: B=4970 → 3974, A=3083 → 4079 [TX008] Transfer $700: A=4079 → 3379, B=3974 → 4674 [TX009] Transfer $116: B=4674 → 4558, A=3379 → 3495 [TX010] Transfer $163: B=4558 → 4395, A=3495 → 3658 [TX011] Transfer $978: B=4395 → 3417, A=3658 → 4636 [TX012] Transfer $521: B=3417 → 2896, A=4636 → 5157 [TX013] Transfer $863: A=5157 → 4294, B=2896 → 3759 [TX014] Transfer $384: A=4294 → 3910, B=3759 → 4143 [TX015] Transfer $615: A=3910 → 3295, B=4143 → 4758 [TX016] Transfer $21: B=4758 → 4737, A=3295 → 3316 [TX017] Transfer $901: A=3316 → 2415, B=4737 → 5638 [TX018] Transfer $61: B=5638 → 5577, A=2415 → 2476 [TX019] Transfer $89: A=2476 → 2387, B=5577 → 5666 [TX020] Transfer $780: B=5666 → 4886, A=2387 → 3167 [TX021] Transfer $677: A=3167 → 2490, B=4886 → 5563 [TX022] Transfer $273: B=5563 → 5290, A=2490 → 2763 [TX023] Transfer $953: B=5290 → 4337, A=2763 → 3716 [TX024] Transfer $410: A=3716 → 3306, B=4337 → 4747 [TX025] Transfer $923: B=4747 → 3824, A=3306 → 4229 [TX026] Transfer $255: B=3824 → 3569, A=4229 → 4484 [TX027] Transfer $348: A=4484 → 4136, B=3569 → 3917 [TX028] Transfer $604: A=4136 → 3532, B=3917 → 4521 [TX029] Transfer $74: A=3532 → 3458, B=4521 → 4595 [TX030] Transfer $71: A=3458 → 3387, B=4595 → 4666 [TX031] Transfer $74: A=3387 → 3313, B=4666 → 4740 [TX032] Transfer $687: A=3313 → 2626, B=4740 → 5427 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	32	{"bug_type": "LOST_UPDATE", "bug_location": "TX006", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 32}
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 $644: A=4000 → 3356, B=4200 → 4844 [TX002] Transfer $220: A=3356 → 3136, B=4844 → 5064 [TX003] Transfer $961: B=5064 → 4103, A=3136 → 4097 [TX004] Transfer $536: B=4103 → 3567, A=4097 → 4633 [TX005] Transfer $475: A=4633 → 4158, B=3567 → 4042 [TX006] Transfer $156: A=4158 → 4002, B=4042 → 4198 [TX007] Transfer $422: B=4198 → 3776, A=4002 → 4424 [TX008] Transfer $651: B=3776 → 3125, A=4424 → 5075 [TX009] Transfer $275: A=5075 → 4800, B=3125 → 3400 [TX010] Transfer $264: B=3400 → 3136, A=4800 → 5064 [TX011] Transfer $246: A=5064 → 4818, B=3136 → 3382 [TX012] Transfer $198: A=4818 → 4620, B=3382 → 3580 [TX013] Transfer $818: A=4620 → 3802, B=3580 → 4398 [TX014] Transfer $499: B=4398 → 3899, A=3802 → 4301 [TX015] Thread T1: READ B=3899 [TX016] Thread T2: READ B=3899 [TX017] Thread T1: COMMIT B=3899 → 3741 [TX018] Thread T2: COMMIT B=3899 → 3840 [TX019] Transfer $281: A=4301 → 4020, B=3840 → 4121 [TX020] Transfer $266: A=4020 → 3754, B=4121 → 4387 [TX021] Transfer $661: B=4387 → 3726, A=3754 → 4415 [TX022] Transfer $803: A=4415 → 3612, B=3726 → 4529 [TX023] Transfer $882: A=3612 → 2730, B=4529 → 5411 [TX024] Transfer $618: A=2730 → 2112, B=5411 → 6029 [TX025] Transfer $924: B=6029 → 5105, A=2112 → 3036 [TX026] Transfer $689: B=5105 → 4416, A=3036 → 3725 [TX027] Transfer $967: A=3725 → 2758, B=4416 → 5383 [TX028] Transfer $116: A=2758 → 2642, B=5383 → 5499 [TX029] Transfer $510: A=2642 → 2132, B=5499 → 6009 [TX030] Transfer $616: A=2132 → 1516, B=6009 → 6625 [TX031] Transfer $339: A=1516 → 1177, B=6625 → 6964 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	TX018	Thread T2 overwrites T1's change	LOST_UPDATE	31	{"bug_type": "LOST_UPDATE", "bug_location": "TX018", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 31}
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 $187: A=4000 → 3813, B=4200 → 4387 [TX002] Transfer $46: A=3813 → 3767, B=4387 → 4433 [TX003] Transfer $694: B=4433 → 3739, A=3767 → 4461 [TX004] Transfer $627: A=4461 → 3834, B=3739 → 4366 [TX005] Transfer $241: B=4366 → 4125, A=3834 → 4075 [TX006] Transfer $990: A=4075 → 3085, B=4125 → 5115 [TX007] Transfer $378: B=5115 → 4737, A=3085 → 3463 [TX008] Transfer $789: B=4737 → 3948, A=3463 → 4252 [TX009] Transfer $516: B=3948 → 3432, A=4252 → 4768 [TX010] Transfer $838: B=3432 → 2594, A=4768 → 5606 [TX011] Transfer $895: A=5606 → 4711, B=2594 → 3489 [TX012] Transfer $658: B=3489 → 2831, A=4711 → 5369 [TX013] Transfer $569: B=2831 → 2262, A=5369 → 5938 [TX014] Transfer $293: A=5938 → 5645, B=2262 → 2555 [TX015] Transfer $281: A=5645 → 5364, B=2555 → 2836 [TX016] Transfer $852: B=2836 → 1984, A=5364 → 6216 [TX017] Transfer $971: B=1984 → 1013, A=6216 → 7187 [TX018] Transfer $907: A=7187 → 6280, B=1013 → 1920 [TX019] Transfer $426: B=1920 → 1494, A=6280 → 6706 [TX020] Transfer $516: A=6706 → 6190, B=1494 → 2010 [TX021] Transfer $397: B=2010 → 1613, A=6190 → 6587 [TX022] Transfer $231: A=6587 → 6356, B=1613 → 1844 [TX023] Transfer $955: A=6356 → 5401, B=1844 → 2799 [TX024] Transfer $812: A=5401 → 4589, B=2799 → 3611 [TX025] Thread T1: READ A=4589 [TX026] Thread T2: READ A=4589 [TX027] Thread T1: COMMIT A=4589 → 4504 [TX028] Thread T2: COMMIT A=4589 → 4530 [TX029] Transfer $714: B=3611 → 2897, A=4530 → 5244 [TX030] Transfer $461: A=5244 → 4783, B=2897 → 3358 [TX031] Transfer $21: A=4783 → 4762, B=3358 → 3379 [TX032] Transfer $857: B=3379 → 2522, A=4762 → 5619 [TX033] Transfer $115: A=5619 → 5504, B=2522 → 2637 [TX034] Transfer $310: B=2637 → 2327, A=5504 → 5814 [TX035] Transfer $246: A=5814 → 5568, B=2327 → 2573 [TX036] Transfer $66: B=2573 → 2507, A=5568 → 5634 [TX037] Transfer $613: A=5634 → 5021, B=2507 → 3120 [TX038] Transfer $737: A=5021 → 4284, B=3120 → 3857 [TX039] Transfer $441: A=4284 → 3843, B=3857 → 4298 [TX040] Transfer $248: A=3843 → 3595, B=4298 → 4546 [TX041] Transfer $682: B=4546 → 3864, A=3595 → 4277 [TX042] Transfer $71: A=4277 → 4206, B=3864 → 3935 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	TX028	Thread T2 overwrites T1's change	LOST_UPDATE	42	{"bug_type": "LOST_UPDATE", "bug_location": "TX028", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 42}
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 $534: A=4000 → 3466, B=4200 → 4734 [TX002] Transfer $337: A=3466 → 3129, B=4734 → 5071 [TX003] Transfer $467: A=3129 → 2662, B=5071 → 5538 [TX004] Transfer $730: A=2662 → 1932, B=5538 → 6268 [TX005] Transfer $85: B=6268 → 6183, A=1932 → 2017 [TX006] Transfer $437: A=2017 → 1580, B=6183 → 6620 [TX007] Transfer $221: A=1580 → 1359, B=6620 → 6841 [TX008] Transfer $380: B=6841 → 6461, A=1359 → 1739 [TX009] Transfer $894: B=6461 → 5567, A=1739 → 2633 [TX010] Transfer $653: B=5567 → 4914, A=2633 → 3286 [TX011] Transfer $707: B=4914 → 4207, A=3286 → 3993 [TX012] Transfer $845: B=4207 → 3362, A=3993 → 4838 [TX013] Transfer $519: A=4838 → 4319, B=3362 → 3881 [TX014] Transfer $730: A=4319 → 3589, B=3881 → 4611 [TX015] Transfer $993: B=4611 → 3618, A=3589 → 4582 [TX016] Transfer $468: A=4582 → 4114, B=3618 → 4086 [TX017] Transfer $766: B=4086 → 3320, A=4114 → 4880 [TX018] Transfer $945: A=4880 → 3935, B=3320 → 4265 [TX019] Transfer $114: A=3935 → 3821, B=4265 → 4379 [TX020] Transfer $587: A=3821 → 3234, B=4379 → 4966 [TX021] Transfer $537: B=4966 → 4429, A=3234 → 3771 [TX022] Transfer $382: A=3771 → 3389, B=4429 → 4811 [TX023] Transfer $312: B=4811 → 4499, A=3389 → 3701 [TX024] Transfer $30: B=4499 → 4469, A=3701 → 3731 [TX025] Transfer $804: A=3731 → 2927, B=4469 → 5273 [TX026] Transfer $961: B=5273 → 4312, A=2927 → 3888 [TX027] Transfer $222: B=4312 → 4090, A=3888 → 4110 [TX028] Transfer $4: A=4110 → 4106, B=4090 → 4094 [TX029] Transfer $71: A=4106 → 4035, B=4094 → 4165 [TX030] Transfer $494: A=4035 → 3541, B=4165 → 4659 [TX031] Transfer $923: B=4659 → 3736, A=3541 → 4464 [TX032] Transfer $488: B=3736 → 3248, A=4464 → 4952 [TX033] Transfer $518: A=4952 → 4434, B=3248 → 3766 [TX034] Transfer $685: B=3766 → 3081, A=4434 → 5119 [TX035] Transfer $889: B=3081 → 2192, A=5119 → 6008 [TX036] Transfer $821: B=2192 → 1371, A=6008 → 6829 [TX037] Transfer $240: B=1371 → 1131, A=6829 → 7069 [TX038] Transfer $1149: B=1131 → -18, A=7069 → 8218 [TX039] Transfer $755: A=8218 → 7463, B=-18 → 737 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	TX038	Account balance goes negative	NEGATIVE_BAL	39	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX038", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 39}
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 $950: B=4200 → 3250, A=4000 → 4950 [TX002] Transfer $926: B=3250 → 2324, A=4950 → 5876 [TX003] Transfer $531: B=2324 → 1793, A=5876 → 6407 [TX004] Transfer $916: B=1793 → 877, A=6407 → 7323 [TX005] Transfer $756: A=7323 → 6567, B=877 → 1633 [TX006] Transfer $571: B=1633 → 1062, A=6567 → 7138 [TX007] Transfer $195: B=1062 → 867, A=7138 → 7333 [TX008] Transfer $237: A=7333 → 7096, B=867 → 1104 [TX009] Transfer $483: A=7096 → 6613, B=1104 → 1587 [TX010] Transfer $724: B=1587 → 863, A=6613 → 7337 [TX011] Transfer $120: B=863 → 743, A=7337 → 7457 [TX012] Transfer $454: B=743 → 289, A=7457 → 7911 [TX013] Transfer $119: B=289 → 170, A=7911 → 8030 [TX014] Transfer $20: B=170 → 150, A=8030 → 8050 [TX015] Transfer $97: A=8050 → 7953, B=150 → 247 [TX016] Transfer $186: A=7953 → 7767, B=247 → 433 [TX017] Transfer $578: A=7767 → 7189, B=433 → 1011 [TX018] Transfer $540: A=7189 → 6649, B=1011 → 1551 [TX019] Transfer $944: A=6649 → 5705, B=1551 → 2495 [TX020] Transfer $788: A=5705 → 4917, B=2495 → 3283 [TX021] Transfer $910: B=3283 → 2373, A=4917 → 5827 [TX022] Transfer $293: B=2373 → 2080, A=5827 → 6120 [TX023] Transfer $384: A=6120 → 5736, B=2080 → 2464 [TX024] Transfer $159: A=5736 → 5577, B=2464 → 2623 [TX025] Transfer $473: A=5577 → 5104, B=2623 → 3096 [TX026] Transfer $645: B=3096 → 2451, A=5104 → 5749 [TX027] Transfer $339: B=2451 → 2112, A=5749 → 6088 [TX028] Transfer $6099: A=6088 → -11, B=2112 → 8211 [TX029] Balance check: A=-11 [TX030] Balance check: A=-11 [TX031] Transfer $763: B=8211 → 7448, A=-11 → 752 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	TX028	Account balance goes negative	NEGATIVE_BAL	31	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX028", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 31}
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 $244: B=4200 → 3956, A=4000 → 4244 [TX002] Transfer $590: B=3956 → 3366, A=4244 → 4834 [TX003] Transfer $24: B=3366 → 3342, A=4834 → 4858 [TX004] Transfer $10: B=3342 → 3332, A=4858 → 4868 [TX005] Transfer $854: A=4868 → 4014, B=3332 → 4186 [TX006] Transfer $623: B=4186 → 3563, A=4014 → 4637 [TX007] Transfer $653: B=3563 → 2910, A=4637 → 5290 [TX008] Transfer $696: A=5290 → 4594, B=2910 → 3606 [TX009] Transfer $927: A=4594 → 3667, B=3606 → 4533 [TX010] Transfer $809: A=3667 → 2858, B=4533 → 5342 [TX011] Transfer $595: B=5342 → 4747, A=2858 → 3453 [TX012] Transfer $94: B=4747 → 4653, A=3453 → 3547 [TX013] Transfer $767: B=4653 → 3886, A=3547 → 4314 [TX014] Transfer $3893: B=3886 → -7, A=4314 → 8207 [TX015] Transfer $545: A=8207 → 7662, B=-7 → 538 [TX016] Transfer $133: B=538 → 405, A=7662 → 7795 [TX017] Transfer $175: B=405 → 230, A=7795 → 7970 [TX018] Transfer $988: A=7970 → 6982, B=230 → 1218 [TX019] Transfer $774: A=6982 → 6208, B=1218 → 1992 [TX020] Transfer $992: A=6208 → 5216, B=1992 → 2984 [TX021] Transfer $811: B=2984 → 2173, A=5216 → 6027 [TX022] Transfer $272: B=2173 → 1901, A=6027 → 6299 [TX023] Transfer $379: A=6299 → 5920, B=1901 → 2280 [TX024] Transfer $844: B=2280 → 1436, A=5920 → 6764 [TX025] Transfer $693: B=1436 → 743, A=6764 → 7457 [TX026] Transfer $27: A=7457 → 7430, B=743 → 770 [TX027] Transfer $665: B=770 → 105, A=7430 → 8095 [TX028] Transfer $933: A=8095 → 7162, B=105 → 1038 [TX029] Transfer $121: B=1038 → 917, A=7162 → 7283 [TX030] Transfer $970: A=7283 → 6313, B=917 → 1887 [TX031] Transfer $506: A=6313 → 5807, B=1887 → 2393 [TX032] Transfer $242: A=5807 → 5565, B=2393 → 2635 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	TX014	Account balance goes negative	NEGATIVE_BAL	32	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX014", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 32}
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 $48: B=4200 → 4152, A=4000 → 4048 [TX002] Transfer $575: B=4152 → 3577, A=4048 → 4623 [TX003] Transfer $657: A=4623 → 3966, B=3577 → 4234 [TX004] Transfer $262: A=3966 → 3704, B=4234 → 4496 [TX005] Transfer $309: A=3704 → 3395, B=4496 → 4805 [TX006] Transfer $118: B=4805 → 4687, A=3395 → 3513 [TX007] Transfer $407: B=4687 → 4280, A=3513 → 3920 [TX008] Transfer $200: A=3920 → 3720, B=4280 → 4480 [TX009] Transfer $946: B=4480 → 3534, A=3720 → 4666 [TX010] Transfer $818: B=3534 → 2716, A=4666 → 5484 [TX011] Transfer $495: A=5484 → 4989, B=2716 → 3211 [TX012] Transfer $915: A=4989 → 4074, B=3211 → 4126 [TX013] Transfer $804: B=4126 → 3322, A=4074 → 4878 [TX014] Transfer $857: B=3322 → 2465, A=4878 → 5735 [TX015] Transfer $570: B=2465 → 1895, A=5735 → 6305 [TX016] Transfer $593: A=6305 → 5712, B=1895 → 2488 [TX017] Transfer $69: B=2488 → 2419, A=5712 → 5781 [TX018] Transfer $862: A=5781 → 4919, B=2419 → 3281 [TX019] Transfer $386: A=4919 → 4533, B=3281 → 3667 [TX020] Transfer $193: A=4533 → 4340, B=3667 → 3860 [TX021] Transfer $724: A=4340 → 3616, B=3860 → 4586 [TX022] Transfer $425: A=3616 → 3191, B=4584 → 5009 [TX023] Transfer $900: A=3191 → 2291, B=5009 → 5909 [TX024] Transfer $464: A=2291 → 1827, B=5909 → 6373 [TX025] Transfer $539: B=6373 → 5834, A=1827 → 2366 [TX026] Transfer $116: B=5834 → 5718, A=2366 → 2482 [TX027] Transfer $798: B=5718 → 4920, A=2482 → 3280 [TX028] Transfer $456: A=3280 → 2824, B=4920 → 5376 [TX029] Transfer $928: A=2824 → 1896, B=5376 → 6304 [TX030] Transfer $350: A=1896 → 1546, B=6304 → 6654 [TX031] Transfer $796: B=6654 → 5858, A=1546 → 2342 [TX032] Transfer $789: B=5858 → 5069, A=2342 → 3131 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	TX021	Mathematical calculation is incorrect	CALC_ERROR	32	{"bug_type": "CALC_ERROR", "bug_location": "TX021", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 32}
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 $472: A=4000 → 3528, B=4200 → 4672 [TX002] Transfer $6: B=4672 → 4666, A=3528 → 3534 [TX003] Transfer $705: B=4666 → 3961, A=3534 → 4239 [TX004] Transfer $480: A=4239 → 3759, B=3961 → 4441 [TX005] Transfer $535: A=3759 → 3224, B=4441 → 4976 [TX006] Transfer $593: B=4976 → 4383, A=3224 → 3817 [TX007] Transfer $330: B=4383 → 4053, A=3817 → 4147 [TX008] Transfer $295: A=4147 → 3852, B=4053 → 4348 [TX009] Payment PAY1012: Transfer $793: B=4348 → 3555, A=3852 → 4645 [TX010] Transfer $281: B=3555 → 3274, A=4645 → 4926 [TX011] Transfer $282: A=4926 → 4644, B=3274 → 3556 [TX012] Transfer $983: A=4644 → 3661, B=3556 → 4539 [TX013] Transfer $557: A=3661 → 3104, B=4539 → 5096 [TX014] Payment PAY1012: Transfer $793: B=5096 → 4303, A=3104 → 3897 [TX015] Transfer $279: B=4303 → 4024, A=3897 → 4176 [TX016] Transfer $589: A=4176 → 3587, B=4024 → 4613 [TX017] Transfer $74: A=3587 → 3513, B=4613 → 4687 [TX018] Transfer $555: B=4687 → 4132, A=3513 → 4068 [TX019] Transfer $135: B=4132 → 3997, A=4068 → 4203 [TX020] Transfer $926: A=4203 → 3277, B=3997 → 4923 [TX021] Transfer $394: A=3277 → 2883, B=4923 → 5317 [TX022] Transfer $438: A=2883 → 2445, B=5317 → 5755 [TX023] Transfer $723: B=5755 → 5032, A=2445 → 3168 [TX024] Transfer $321: B=5032 → 4711, A=3168 → 3489 [TX025] Transfer $732: B=4711 → 3979, A=3489 → 4221 [TX026] Transfer $583: A=4221 → 3638, B=3979 → 4562 [TX027] Transfer $834: A=3638 → 2804, B=4562 → 5396 [TX028] Transfer $468: B=5396 → 4928, A=2804 → 3272 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	TX014	Payment PAY1012 processed twice	DUPLICATE_TXN	28	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX014", "explanation": "Payment PAY1012 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 28}
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 $869: A=4000 → 3131, B=4200 → 5069 [TX002] Transfer $464: B=5069 → 4605, A=3131 → 3595 [TX003] Transfer $268: B=4605 → 4337, A=3595 → 3863 [TX004] Transfer $820: A=3863 → 3043, B=4337 → 5157 [TX005] Transfer $88: B=5157 → 5069, A=3043 → 3131 [TX006] Transfer $188: B=5069 → 4881, A=3131 → 3319 [TX007] Transfer $969: B=4881 → 3912, A=3319 → 4288 [TX008] Transfer $972: A=4288 → 3316, B=3912 → 4884 [TX009] Transfer $930: A=3316 → 2386, B=4884 → 5814 [TX010] Transfer $205: A=2386 → 2181, B=5814 → 6019 [TX011] Transfer $52: B=6019 → 5967, A=2181 → 2233 [TX012] Transfer $616: B=5967 → 5351, A=2233 → 2851 [TX013] Transfer $983: A=2849 → 1866, B=5351 → 6334 [TX014] Transfer $971: B=6334 → 5363, A=1866 → 2837 [TX015] Transfer $737: A=2837 → 2100, B=5363 → 6100 [TX016] Transfer $849: B=6100 → 5251, A=2100 → 2949 [TX017] Transfer $231: B=5251 → 5020, A=2949 → 3180 [TX018] Transfer $970: A=3180 → 2210, B=5020 → 5990 [TX019] Transfer $766: B=5990 → 5224, A=2210 → 2976 [TX020] Transfer $135: B=5224 → 5089, A=2976 → 3111 [TX021] Transfer $616: B=5089 → 4473, A=3111 → 3727 [TX022] Transfer $746: A=3727 → 2981, B=4473 → 5219 [TX023] Transfer $186: A=2981 → 2795, B=5219 → 5405 [TX024] Transfer $31: B=5405 → 5374, A=2795 → 2826 [TX025] Transfer $243: B=5374 → 5131, A=2826 → 3069 [TX026] Transfer $380: B=5131 → 4751, A=3069 → 3449 [TX027] Transfer $12: B=4751 → 4739, A=3449 → 3461 [TX028] Transfer $894: B=4739 → 3845, A=3461 → 4355 [TX029] Transfer $705: B=3845 → 3140, A=4355 → 5060 [TX030] Transfer $727: A=5060 → 4333, B=3140 → 3867 [TX031] Transfer $76: B=3867 → 3791, A=4333 → 4409 [TX032] Transfer $55: A=4409 → 4354, B=3791 → 3846 [TX033] Transfer $484: B=3846 → 3362, A=4354 → 4838 [TX034] Transfer $7: B=3362 → 3355, A=4838 → 4845 [TX035] Transfer $311: B=3355 → 3044, A=4845 → 5156 [TX036] Transfer $137: B=3044 → 2907, A=5156 → 5293 [TX037] Transfer $268: A=5293 → 5025, B=2907 → 3175 [TX038] Transfer $954: A=5025 → 4071, B=3175 → 4129 [TX039] Transfer $137: B=4129 → 3992, A=4071 → 4208 [TX040] Transfer $729: A=4208 → 3479, B=3992 → 4721 [TX041] Transfer $268: B=4721 → 4453, A=3479 → 3747 [TX042] Transfer $47: A=3747 → 3700, B=4453 → 4500 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	TX012	Mathematical calculation is incorrect	CALC_ERROR	42	{"bug_type": "CALC_ERROR", "bug_location": "TX012", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 42}
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 $121: A=4000 → 3879, B=4200 → 4321 [TX002] Transfer $393: B=4321 → 3928, A=3879 → 4272 [TX003] Transfer $821: A=4272 → 3451, B=3928 → 4749 [TX004] Transfer $980: B=4749 → 3769, A=3451 → 4431 [TX005] Transfer $719: B=3769 → 3050, A=4431 → 5150 [TX006] Transfer $296: B=3050 → 2754, A=5150 → 5446 [TX007] Transfer $691: A=5446 → 4755, B=2754 → 3445 [TX008] Transfer $569: B=3445 → 2876, A=4755 → 5324 [TX009] Transfer $323: A=5324 → 5001, B=2876 → 3199 [TX010] Transfer $917: B=3199 → 2282, A=5001 → 5918 [TX011] Transfer $971: B=2282 → 1311, A=5918 → 6889 [TX012] Transfer $756: A=6889 → 6133, B=1311 → 2067 [TX013] Transfer $755: A=6133 → 5378, B=2067 → 2822 [TX014] Transfer $213: A=5378 → 5165, B=2822 → 3035 [TX015] Transfer $856: A=5165 → 4309, B=3035 → 3891 [TX016] Transfer $161: A=4309 → 4148, B=3891 → 4052 [TX017] Transfer $944: A=4148 → 3204, B=4052 → 4996 [TX018] Transfer $630: A=3204 → 2574, B=4996 → 5626 [TX019] Transfer $870: A=2574 → 1704, B=5626 → 6496 [TX020] Transfer $6516: B=6496 → -20, A=1704 → 8220 [TX021] Balance check: B=-20 [TX022] Balance check: B=-20 [TX023] Transfer $409: A=8220 → 7811, B=-20 → 389 [TX024] Transfer $57: A=7811 → 7754, B=389 → 446 [TX025] Transfer $278: B=446 → 168, A=7754 → 8032 [TX026] Transfer $405: A=8032 → 7627, B=168 → 573 [TX027] Transfer $125: A=7627 → 7502, B=573 → 698 [TX028] Transfer $10: B=698 → 688, A=7502 → 7512 [TX029] Transfer $390: A=7512 → 7122, B=688 → 1078 [TX030] Transfer $372: A=7122 → 6750, B=1078 → 1450 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	TX020	Account balance goes negative	NEGATIVE_BAL	30	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX020", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 30}
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 $271: B=4200 → 3929, A=4000 → 4271 [TX002] Transfer $642: A=4271 → 3629, B=3929 → 4571 [TX003] Transfer $293: A=3629 → 3336, B=4571 → 4864 [TX004] Transfer $194: B=4864 → 4670, A=3336 → 3530 [TX005] Transfer $141: A=3530 → 3389, B=4670 → 4811 [TX006] Transfer $654: B=4811 → 4157, A=3389 → 4043 [TX007] Transfer $280: B=4157 → 3877, A=4043 → 4323 [TX008] Transfer $330: B=3877 → 3547, A=4323 → 4653 [TX009] Transfer $52: A=4653 → 4601, B=3547 → 3599 [TX010] Transfer $997: A=4601 → 3604, B=3599 → 4596 [TX011] Transfer $277: A=3604 → 3327, B=4596 → 4873 [TX012] Transfer $746: A=3327 → 2581, B=4873 → 5619 [TX013] Transfer $94: A=2581 → 2487, B=5619 → 5713 [TX014] Transfer $507: A=2487 → 1980, B=5713 → 6220 [TX015] Transfer $432: A=1980 → 1548, B=6220 → 6652 [TX016] Transfer $382: B=6652 → 6270, A=1548 → 1930 [TX017] Transfer $340: B=6270 → 5930, A=1930 → 2270 [TX018] Transfer $59: A=2270 → 2211, B=5930 → 5989 [TX019] Transfer $75: B=5989 → 5914, A=2211 → 2286 [TX020] Transfer $198: B=5914 → 5716, A=2286 → 2484 [TX021] Transfer $850: B=5716 → 4866, A=2484 → 3334 [TX022] Transfer $999: A=3334 → 2335, B=4866 → 5865 [TX023] Transfer $791: A=2335 → 1544, B=5865 → 6656 [TX024] Transfer $757: B=6656 → 5899, A=1544 → 2301 [TX025] Transfer $473: A=2301 → 1828, B=5899 → 6372 [TX026] Transfer $486: A=1828 → 1342, B=6372 → 6856 [TX027] Transfer $164: B=6858 → 6694, A=1342 → 1506 [TX028] Transfer $261: A=1506 → 1245, B=6694 → 6955 [TX029] Transfer $205: B=6955 → 6750, A=1245 → 1450 [TX030] Transfer $886: B=6750 → 5864, A=1450 → 2336 [TX031] Transfer $243: A=2336 → 2093, B=5864 → 6107 [TX032] Transfer $17: B=6107 → 6090, A=2093 → 2110 [TX033] Transfer $600: A=2110 → 1510, B=6090 → 6690 [TX034] Transfer $810: A=1510 → 700, B=6690 → 7500 [TX035] Transfer $45: A=700 → 655, B=7500 → 7545 [TX036] Transfer $382: B=7545 → 7163, A=655 → 1037 [TX037] Transfer $163: A=1037 → 874, B=7163 → 7326 [TX038] Transfer $704: B=7326 → 6622, A=874 → 1578 [TX039] Transfer $63: B=6622 → 6559, A=1578 → 1641 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	39	{"bug_type": "CALC_ERROR", "bug_location": "TX026", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 39}
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 $88: B=4200 → 4112, A=4000 → 4088 [TX002] Transfer $374: A=4088 → 3714, B=4112 → 4486 [TX003] Transfer $969: A=3714 → 2745, B=4486 → 5455 [TX004] Transfer $309: A=2745 → 2436, B=5455 → 5764 [TX005] Transfer $676: A=2436 → 1760, B=5764 → 6440 [TX006] Thread T1: READ B=6440 [TX007] Thread T2: READ B=6440 [TX008] Thread T1: COMMIT B=6440 → 6355 [TX009] Thread T2: COMMIT B=6440 → 6243 [TX010] Transfer $537: B=6243 → 5706, A=1760 → 2297 [TX011] Transfer $706: B=5706 → 5000, A=2297 → 3003 [TX012] Transfer $244: A=3003 → 2759, B=5000 → 5244 [TX013] Transfer $147: A=2759 → 2612, B=5244 → 5391 [TX014] Transfer $982: B=5391 → 4409, A=2612 → 3594 [TX015] Transfer $607: A=3594 → 2987, B=4409 → 5016 [TX016] Transfer $133: B=5016 → 4883, A=2987 → 3120 [TX017] Transfer $565: B=4883 → 4318, A=3120 → 3685 [TX018] Transfer $392: B=4318 → 3926, A=3685 → 4077 [TX019] Transfer $469: A=4077 → 3608, B=3926 → 4395 [TX020] Transfer $694: A=3608 → 2914, B=4395 → 5089 [TX021] Transfer $550: B=5089 → 4539, A=2914 → 3464 [TX022] Transfer $646: A=3464 → 2818, B=4539 → 5185 [TX023] Transfer $733: B=5185 → 4452, A=2818 → 3551 [TX024] Transfer $431: B=4452 → 4021, A=3551 → 3982 [TX025] Transfer $808: A=3982 → 3174, B=4021 → 4829 [TX026] Transfer $28: B=4829 → 4801, A=3174 → 3202 [TX027] Transfer $278: A=3202 → 2924, B=4801 → 5079 [TX028] Transfer $702: A=2924 → 2222, B=5079 → 5781 [TX029] Transfer $339: B=5781 → 5442, A=2222 → 2561 [TX030] Transfer $933: A=2561 → 1628, B=5442 → 6375 [TX031] Transfer $151: B=6375 → 6224, A=1628 → 1779 [TX032] Transfer $12: A=1779 → 1767, B=6224 → 6236 [TX033] Transfer $994: A=1767 → 773, B=6236 → 7230 [TX034] Transfer $109: A=773 → 664, B=7230 → 7339 [TX035] Transfer $541: A=664 → 123, B=7339 → 7880 [TX036] Transfer $99: B=7880 → 7781, A=123 → 222 [TX037] Transfer $566: B=7781 → 7215, A=222 → 788 [TX038] Transfer $920: B=7215 → 6295, A=788 → 1708 [TX039] Transfer $327: A=1708 → 1381, B=6295 → 6622 [TX040] Transfer $355: B=6622 → 6267, A=1381 → 1736 [TX041] Transfer $608: B=6267 → 5659, A=1736 → 2344 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	41	{"bug_type": "LOST_UPDATE", "bug_location": "TX009", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 41}
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 $639: A=4000 → 3361, B=4200 → 4839 [TX002] Transfer $716: B=4839 → 4123, A=3361 → 4077 [TX003] Transfer $167: B=4123 → 3956, A=4077 → 4244 [TX004] Transfer $482: B=3956 → 3474, A=4244 → 4726 [TX005] Transfer $239: B=3474 → 3235, A=4726 → 4965 [TX006] Transfer $945: A=4965 → 4020, B=3235 → 4180 [TX007] Transfer $906: B=4180 → 3274, A=4020 → 4926 [TX008] Transfer $984: B=3274 → 2290, A=4926 → 5910 [TX009] Transfer $817: B=2290 → 1473, A=5910 → 6727 [TX010] Transfer $638: B=1473 → 835, A=6727 → 7365 [TX011] Transfer $709: A=7365 → 6656, B=835 → 1544 [TX012] Transfer $134: A=6656 → 6522, B=1544 → 1678 [TX013] Transfer $162: A=6522 → 6360, B=1678 → 1840 [TX014] Transfer $814: B=1840 → 1026, A=6360 → 7174 [TX015] Transfer $312: B=1026 → 714, A=7174 → 7486 [TX016] Transfer $572: A=7486 → 6914, B=714 → 1286 [TX017] Transfer $6926: A=6914 → -12, B=1286 → 8212 [TX018] Transfer $695: B=8212 → 7517, A=-12 → 683 [TX019] Transfer $517: A=683 → 166, B=7517 → 8034 [TX020] Transfer $45: A=166 → 121, B=8034 → 8079 [TX021] Transfer $634: B=8079 → 7445, A=121 → 755 [TX022] Transfer $577: A=755 → 178, B=7445 → 8022 [TX023] Transfer $35: A=178 → 143, B=8022 → 8057 [TX024] Transfer $789: B=8057 → 7268, A=143 → 932 [TX025] Transfer $156: A=932 → 776, B=7268 → 7424 [TX026] Transfer $450: A=776 → 326, B=7424 → 7874 [TX027] Transfer $1000: B=7874 → 6874, A=326 → 1326 [TX028] Transfer $845: A=1326 → 481, B=6874 → 7719 [TX029] Transfer $87: A=481 → 394, B=7719 → 7806 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	29	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX017", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 29}
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 $170: B=4200 → 4030, A=4000 → 4170 [TX002] Transfer $235: B=4030 → 3795, A=4170 → 4405 [TX003] Transfer $218: A=4405 → 4187, B=3795 → 4013 [TX004] Transfer $128: A=4187 → 4059, B=4013 → 4141 [TX005] Transfer $386: B=4141 → 3755, A=4059 → 4445 [TX006] Transfer $610: B=3755 → 3145, A=4445 → 5055 [TX007] Transfer $671: A=5055 → 4384, B=3145 → 3816 [TX008] Transfer $708: A=4384 → 3676, B=3816 → 4524 [TX009] Transfer $456: A=3676 → 3220, B=4524 → 4980 [TX010] Transfer $562: B=4980 → 4418, A=3220 → 3782 [TX011] Payment PAY1008: Transfer $720: B=4418 → 3698, A=3782 → 4502 [TX012] Transfer $713: A=4502 → 3789, B=3698 → 4411 [TX013] Transfer $432: A=3789 → 3357, B=4411 → 4843 [TX014] Transfer $639: A=3357 → 2718, B=4843 → 5482 [TX015] Transfer $852: A=2718 → 1866, B=5482 → 6334 [TX016] Transfer $291: A=1866 → 1575, B=6334 → 6625 [TX017] Transfer $511: A=1575 → 1064, B=6625 → 7136 [TX018] Transfer $798: A=1064 → 266, B=7136 → 7934 [TX019] Transfer $368: B=7934 → 7566, A=266 → 634 [TX020] Transfer $166: B=7566 → 7400, A=634 → 800 [TX021] Transfer $214: A=800 → 586, B=7400 → 7614 [TX022] Transfer $242: B=7614 → 7372, A=586 → 828 [TX023] Transfer $689: A=828 → 139, B=7372 → 8061 [TX024] Transfer $38: A=139 → 101, B=8061 → 8099 [TX025] Transfer $974: B=8099 → 7125, A=101 → 1075 [TX026] Transfer $742: A=1075 → 333, B=7125 → 7867 [TX027] Payment PAY1008: Transfer $720: B=7867 → 7147, A=333 → 1053 [TX028] Transfer $661: A=1053 → 392, B=7147 → 7808 [TX029] Transfer $153: A=392 → 239, B=7808 → 7961 [TX030] Transfer $53: B=7961 → 7908, A=239 → 292 [TX031] Transfer $12: A=292 → 280, B=7908 → 7920 [TX032] Transfer $822: B=7920 → 7098, A=280 → 1102 [TX033] Transfer $758: B=7098 → 6340, A=1102 → 1860 [TX034] Transfer $873: A=1860 → 987, B=6340 → 7213 [TX035] Transfer $874: A=987 → 113, B=7213 → 8087 [TX036] Transfer $7: A=113 → 106, B=8087 → 8094 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	TX027	Payment PAY1008 processed twice	DUPLICATE_TXN	36	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX027", "explanation": "Payment PAY1008 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 36}
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 $881: A=4000 → 3119, B=4200 → 5081 [TX002] Transfer $49: A=3119 → 3070, B=5081 → 5130 [TX003] Transfer $394: B=5130 → 4736, A=3070 → 3464 [TX004] Payment PAY1006: Transfer $955: A=3464 → 2509, B=4736 → 5691 [TX005] Transfer $231: A=2509 → 2278, B=5691 → 5922 [TX006] Transfer $428: B=5922 → 5494, A=2278 → 2706 [TX007] Transfer $847: B=5494 → 4647, A=2706 → 3553 [TX008] Transfer $124: A=3553 → 3429, B=4647 → 4771 [TX009] Transfer $230: A=3429 → 3199, B=4771 → 5001 [TX010] Transfer $72: A=3199 → 3127, B=5001 → 5073 [TX011] Transfer $794: B=5073 → 4279, A=3127 → 3921 [TX012] Transfer $90: B=4279 → 4189, A=3921 → 4011 [TX013] Transfer $379: B=4189 → 3810, A=4011 → 4390 [TX014] Transfer $579: A=4390 → 3811, B=3810 → 4389 [TX015] Transfer $477: B=4389 → 3912, A=3811 → 4288 [TX016] Transfer $793: B=3912 → 3119, A=4288 → 5081 [TX017] Transfer $156: A=5081 → 4925, B=3119 → 3275 [TX018] Transfer $26: A=4925 → 4899, B=3275 → 3301 [TX019] Payment PAY1006: Transfer $955: A=4899 → 3944, B=3301 → 4256 [TX020] Transfer $653: A=3944 → 3291, B=4256 → 4909 [TX021] Transfer $3: A=3291 → 3288, B=4909 → 4912 [TX022] Transfer $108: B=4912 → 4804, A=3288 → 3396 [TX023] Transfer $431: A=3396 → 2965, B=4804 → 5235 [TX024] Transfer $997: B=5235 → 4238, A=2965 → 3962 [TX025] Transfer $97: A=3962 → 3865, B=4238 → 4335 [TX026] Transfer $920: A=3865 → 2945, B=4335 → 5255 [TX027] Transfer $471: B=5255 → 4784, A=2945 → 3416 [TX028] Transfer $519: A=3416 → 2897, B=4784 → 5303 [TX029] Transfer $78: A=2897 → 2819, B=5303 → 5381 [TX030] Transfer $680: A=2819 → 2139, B=5381 → 6061 [TX031] Transfer $300: A=2139 → 1839, B=6061 → 6361 [TX032] Transfer $950: B=6361 → 5411, A=1839 → 2789 [TX033] Transfer $327: B=5411 → 5084, A=2789 → 3116 [TX034] Transfer $241: B=5084 → 4843, A=3116 → 3357 [TX035] Transfer $141: A=3357 → 3216, B=4843 → 4984 [TX036] Transfer $110: A=3216 → 3106, B=4984 → 5094 [TX037] Transfer $479: A=3106 → 2627, B=5094 → 5573 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	TX019	Payment PAY1006 processed twice	DUPLICATE_TXN	37	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX019", "explanation": "Payment PAY1006 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 37}
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 $737: B=4200 → 3463, A=4000 → 4737 [TX002] Transfer $756: A=4737 → 3981, B=3463 → 4219 [TX003] Transfer $583: B=4219 → 3636, A=3981 → 4564 [TX004] Transfer $627: A=4564 → 3937, B=3636 → 4263 [TX005] Transfer $529: B=4263 → 3734, A=3937 → 4466 [TX006] Transfer $412: B=3734 → 3322, A=4466 → 4878 [TX007] Transfer $145: A=4878 → 4733, B=3322 → 3465 [TX008] Transfer $8: B=3467 → 3459, A=4733 → 4741 [TX009] Transfer $243: B=3459 → 3216, A=4741 → 4984 [TX010] Transfer $978: B=3216 → 2238, A=4984 → 5962 [TX011] Transfer $598: B=2238 → 1640, A=5962 → 6560 [TX012] Transfer $671: A=6560 → 5889, B=1640 → 2311 [TX013] Transfer $65: B=2311 → 2246, A=5889 → 5954 [TX014] Transfer $316: A=5954 → 5638, B=2246 → 2562 [TX015] Transfer $704: A=5638 → 4934, B=2562 → 3266 [TX016] Transfer $656: B=3266 → 2610, A=4934 → 5590 [TX017] Transfer $631: B=2610 → 1979, A=5590 → 6221 [TX018] Transfer $982: A=6221 → 5239, B=1979 → 2961 [TX019] Transfer $158: A=5239 → 5081, B=2961 → 3119 [TX020] Transfer $427: B=3119 → 2692, A=5081 → 5508 [TX021] Transfer $782: B=2692 → 1910, A=5508 → 6290 [TX022] Transfer $540: A=6290 → 5750, B=1910 → 2450 [TX023] Transfer $81: B=2450 → 2369, A=5750 → 5831 [TX024] Transfer $850: A=5831 → 4981, B=2369 → 3219 [TX025] Transfer $170: A=4981 → 4811, B=3219 → 3389 [TX026] Transfer $121: B=3389 → 3268, A=4811 → 4932 [TX027] Transfer $95: A=4932 → 4837, B=3268 → 3363 [TX028] Transfer $466: B=3363 → 2897, A=4837 → 5303 [TX029] Transfer $469: A=5303 → 4834, B=2897 → 3366 [TX030] Transfer $690: A=4834 → 4144, B=3366 → 4056 [TX031] Transfer $407: B=4056 → 3649, A=4144 → 4551 [TX032] Transfer $765: B=3649 → 2884, A=4551 → 5316 [TX033] Transfer $48: A=5316 → 5268, B=2884 → 2932 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	33	{"bug_type": "CALC_ERROR", "bug_location": "TX007", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 33}
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 $830: B=4200 → 3370, A=4000 → 4830 [TX002] Transfer $787: B=3370 → 2583, A=4830 → 5617 [TX003] Transfer $104: A=5617 → 5513, B=2583 → 2687 [TX004] Transfer $274: A=5513 → 5239, B=2687 → 2961 [TX005] Transfer $591: A=5239 → 4648, B=2961 → 3552 [TX006] Transfer $959: B=3552 → 2593, A=4648 → 5607 [TX007] Transfer $244: A=5607 → 5363, B=2593 → 2837 [TX008] Transfer $937: B=2837 → 1900, A=5363 → 6300 [TX009] Transfer $972: A=6300 → 5328, B=1900 → 2872 [TX010] Transfer $858: A=5328 → 4470, B=2872 → 3730 [TX011] Transfer $181: B=3730 → 3549, A=4470 → 4651 [TX012] Transfer $94: B=3549 → 3455, A=4651 → 4745 [TX013] Transfer $618: A=4745 → 4127, B=3455 → 4073 [TX014] Transfer $541: A=4127 → 3586, B=4073 → 4614 [TX015] Transfer $341: B=4614 → 4273, A=3586 → 3927 [TX016] Transfer $350: A=3927 → 3577, B=4273 → 4623 [TX017] Transfer $62: A=3577 → 3515, B=4623 → 4685 [TX018] Transfer $602: A=3515 → 2913, B=4685 → 5287 [TX019] Transfer $868: A=2913 → 2045, B=5287 → 6155 [TX020] Transfer $384: B=6155 → 5771, A=2045 → 2429 [TX021] Transfer $346: B=5771 → 5425, A=2429 → 2775 [TX022] Transfer $141: B=5425 → 5284, A=2775 → 2916 [TX023] Transfer $812: A=2916 → 2104, B=5284 → 6096 [TX024] Transfer $180: B=6096 → 5916, A=2104 → 2284 [TX025] Transfer $683: B=5916 → 5233, A=2284 → 2967 [TX026] Transfer $316: A=2967 → 2651, B=5233 → 5549 [TX027] Transfer $183: B=5549 → 5366, A=2651 → 2834 [TX028] Transfer $873: A=2834 → 1961, B=5366 → 6239 [TX029] Transfer $618: A=1961 → 1343, B=6239 → 6857 [TX030] Transfer $656: B=6857 → 6201, A=1343 → 2000 [TX031] Transfer $341: B=6201 → 5860, A=1999 → 2340 [TX032] Transfer $357: A=2340 → 1983, B=5860 → 6217 [TX033] Transfer $653: B=6217 → 5564, A=1983 → 2636 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	TX030	Mathematical calculation is incorrect	CALC_ERROR	33	{"bug_type": "CALC_ERROR", "bug_location": "TX030", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 33}
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 $461: B=4200 → 3739, A=4000 → 4461 [TX002] Transfer $71: A=4461 → 4390, B=3739 → 3810 [TX003] Transfer $538: B=3810 → 3272, A=4390 → 4928 [TX004] Transfer $615: A=4928 → 4313, B=3272 → 3887 [TX005] Transfer $298: B=3887 → 3589, A=4313 → 4611 [TX006] Transfer $815: A=4611 → 3796, B=3589 → 4404 [TX007] Transfer $508: A=3796 → 3288, B=4404 → 4912 [TX008] Transfer $450: A=3288 → 2838, B=4912 → 5362 [TX009] Transfer $412: B=5362 → 4950, A=2838 → 3250 [TX010] Transfer $190: B=4950 → 4760, A=3250 → 3440 [TX011] Transfer $587: A=3440 → 2853, B=4760 → 5347 [TX012] Transfer $902: A=2853 → 1951, B=5347 → 6249 [TX013] Transfer $312: B=6249 → 5937, A=1951 → 2263 [TX014] Transfer $727: A=2263 → 1536, B=5937 → 6664 [TX015] Transfer $177: B=6664 → 6487, A=1536 → 1713 [TX016] Transfer $548: A=1713 → 1165, B=6487 → 7035 [TX017] Transfer $42: A=1165 → 1123, B=7035 → 7077 [TX018] Transfer $951: A=1123 → 172, B=7077 → 8028 [TX019] Transfer $8: A=172 → 164, B=8028 → 8036 [TX020] Transfer $36: A=164 → 128, B=8036 → 8072 [TX021] Transfer $22: A=128 → 106, B=8072 → 8094 [TX022] Transfer $334: B=8094 → 7760, A=106 → 440 [TX023] Transfer $70: A=440 → 370, B=7760 → 7830 [TX024] Transfer $334: B=7830 → 7496, A=370 → 704 [TX025] Transfer $366: A=704 → 338, B=7496 → 7862 [TX026] Transfer $47: A=338 → 291, B=7862 → 7909 [TX027] Transfer $552: B=7909 → 7357, A=291 → 843 [TX028] Transfer $671: A=843 → 172, B=7357 → 8028 [TX029] Transfer $838: B=8028 → 7190, A=172 → 1010 [TX030] Transfer $334: B=7190 → 6856, A=1010 → 1344 [TX031] Transfer $597: B=6856 → 6259, A=1344 → 1941 [TX032] Transfer $458: B=6259 → 5801, A=1941 → 2399 [TX033] Transfer $379: A=2399 → 2020, B=5801 → 6180 [TX034] Transfer $97: A=2020 → 1923, B=6180 → 6277 [TX035] Transfer $472: B=6277 → 5805, A=1923 → 2395 [TX036] Transfer $195: A=2395 → 2200, B=5805 → 6000 [TX037] Transfer $6010: B=6000 → -10, A=2200 → 8210 [TX038] Transfer $168: A=8210 → 8042, B=-10 → 158 [TX039] Transfer $705: A=8042 → 7337, B=158 → 863 [TX040] Transfer $148: A=7337 → 7189, B=863 → 1011 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	TX037	Account balance goes negative	NEGATIVE_BAL	40	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX037", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 40}
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 $834: A=4000 → 3166, B=4200 → 5034 [TX002] Transfer $670: B=5034 → 4364, A=3166 → 3836 [TX003] Transfer $63: A=3836 → 3773, B=4364 → 4427 [TX004] Transfer $614: B=4427 → 3813, A=3773 → 4387 [TX005] Transfer $361: B=3813 → 3452, A=4387 → 4748 [TX006] Transfer $48: A=4748 → 4700, B=3452 → 3500 [TX007] Transfer $309: A=4700 → 4391, B=3500 → 3809 [TX008] Transfer $717: A=4391 → 3674, B=3809 → 4526 [TX009] Transfer $744: A=3674 → 2930, B=4526 → 5270 [TX010] Transfer $217: B=5270 → 5053, A=2930 → 3147 [TX011] Transfer $652: B=5053 → 4401, A=3147 → 3799 [TX012] Transfer $281: B=4401 → 4120, A=3799 → 4080 [TX013] Transfer $351: A=4080 → 3729, B=4120 → 4471 [TX014] Transfer $984: A=3729 → 2745, B=4471 → 5455 [TX015] Transfer $937: B=5455 → 4518, A=2745 → 3682 [TX016] Transfer $625: A=3682 → 3057, B=4518 → 5143 [TX017] Transfer $925: B=5143 → 4218, A=3057 → 3982 [TX018] Payment PAY1013: Transfer $425: A=3982 → 3557, B=4218 → 4643 [TX019] Transfer $553: B=4643 → 4090, A=3557 → 4110 [TX020] Transfer $553: A=4110 → 3557, B=4090 → 4643 [TX021] Transfer $690: A=3557 → 2867, B=4643 → 5333 [TX022] Transfer $997: A=2867 → 1870, B=5333 → 6330 [TX023] Transfer $398: B=6330 → 5932, A=1870 → 2268 [TX024] Transfer $129: A=2268 → 2139, B=5932 → 6061 [TX025] Transfer $960: B=6061 → 5101, A=2139 → 3099 [TX026] Transfer $11: A=3099 → 3088, B=5101 → 5112 [TX027] Transfer $778: A=3088 → 2310, B=5112 → 5890 [TX028] Transfer $198: B=5890 → 5692, A=2310 → 2508 [TX029] Transfer $829: A=2508 → 1679, B=5692 → 6521 [TX030] Transfer $507: A=1679 → 1172, B=6521 → 7028 [TX031] Transfer $289: B=7028 → 6739, A=1172 → 1461 [TX032] Transfer $9: B=6739 → 6730, A=1461 → 1470 [TX033] Payment PAY1013: Transfer $425: A=1470 → 1045, B=6730 → 7155 [TX034] Transfer $115: A=1045 → 930, B=7155 → 7270 [TX035] Transfer $176: B=7270 → 7094, A=930 → 1106 [TX036] Transfer $68: A=1106 → 1038, B=7094 → 7162 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	TX033	Payment PAY1013 processed twice	DUPLICATE_TXN	36	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX033", "explanation": "Payment PAY1013 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 36}
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 $501: A=4000 → 3499, B=4200 → 4701 [TX002] Transfer $573: A=3499 → 2926, B=4701 → 5274 [TX003] Transfer $752: B=5274 → 4522, A=2926 → 3678 [TX004] Transfer $707: A=3678 → 2971, B=4522 → 5229 [TX005] Transfer $743: B=5229 → 4486, A=2971 → 3714 [TX006] Transfer $922: A=3714 → 2792, B=4486 → 5408 [TX007] Transfer $725: A=2792 → 2067, B=5408 → 6133 [TX008] Transfer $557: B=6133 → 5576, A=2067 → 2624 [TX009] Transfer $582: B=5576 → 4994, A=2624 → 3206 [TX010] Transfer $333: A=3206 → 2873, B=4994 → 5327 [TX011] Transfer $890: B=5327 → 4437, A=2873 → 3763 [TX012] Transfer $545: A=3763 → 3218, B=4437 → 4982 [TX013] Transfer $304: A=3218 → 2914, B=4982 → 5286 [TX014] Transfer $466: B=5286 → 4820, A=2914 → 3380 [TX015] Transfer $753: A=3380 → 2627, B=4820 → 5573 [TX016] Transfer $636: A=2627 → 1991, B=5573 → 6209 [TX017] Transfer $330: B=6209 → 5879, A=1991 → 2321 [TX018] Transfer $196: A=2321 → 2125, B=5879 → 6075 [TX019] Transfer $629: B=6075 → 5446, A=2125 → 2754 [TX020] Transfer $421: B=5446 → 5025, A=2754 → 3175 [TX021] Transfer $100: B=5025 → 4925, A=3175 → 3275 [TX022] Transfer $857: A=3275 → 2418, B=4925 → 5782 [TX023] Thread T1: READ A=2418 [TX024] Thread T2: READ A=2418 [TX025] Thread T1: COMMIT A=2418 → 2323 [TX026] Thread T2: COMMIT A=2418 → 2360 [TX027] Transfer $499: A=2360 → 1861, B=5782 → 6281 [TX028] Transfer $34: A=1861 → 1827, B=6281 → 6315 [TX029] Transfer $540: B=6315 → 5775, A=1827 → 2367 [TX030] Transfer $377: B=5775 → 5398, A=2367 → 2744 [TX031] Transfer $15: A=2744 → 2729, B=5398 → 5413 [TX032] Transfer $952: A=2729 → 1777, B=5413 → 6365 [TX033] Transfer $822: A=1777 → 955, B=6365 → 7187 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	TX026	Thread T2 overwrites T1's change	LOST_UPDATE	33	{"bug_type": "LOST_UPDATE", "bug_location": "TX026", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 33}
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 $247: B=4200 → 3953, A=4000 → 4247 [TX002] Transfer $678: B=3953 → 3275, A=4247 → 4925 [TX003] Transfer $901: A=4925 → 4024, B=3275 → 4176 [TX004] Transfer $149: A=4024 → 3875, B=4176 → 4325 [TX005] Transfer $198: A=3875 → 3677, B=4325 → 4523 [TX006] Payment PAY1015: Transfer $327: B=4523 → 4196, A=3677 → 4004 [TX007] Transfer $945: B=4196 → 3251, A=4004 → 4949 [TX008] Transfer $876: A=4949 → 4073, B=3251 → 4127 [TX009] Transfer $337: B=4127 → 3790, A=4073 → 4410 [TX010] Transfer $646: A=4410 → 3764, B=3790 → 4436 [TX011] Transfer $873: B=4436 → 3563, A=3764 → 4637 [TX012] Transfer $746: B=3563 → 2817, A=4637 → 5383 [TX013] Payment PAY1015: Transfer $327: B=2817 → 2490, A=5383 → 5710 [TX014] Transfer $811: A=5710 → 4899, B=2490 → 3301 [TX015] Transfer $522: A=4899 → 4377, B=3301 → 3823 [TX016] Transfer $512: B=3823 → 3311, A=4377 → 4889 [TX017] Transfer $331: B=3311 → 2980, A=4889 → 5220 [TX018] Transfer $734: B=2980 → 2246, A=5220 → 5954 [TX019] Transfer $276: B=2246 → 1970, A=5954 → 6230 [TX020] Transfer $214: B=1970 → 1756, A=6230 → 6444 [TX021] Transfer $464: A=6444 → 5980, B=1756 → 2220 [TX022] Transfer $225: A=5980 → 5755, B=2220 → 2445 [TX023] Transfer $912: B=2445 → 1533, A=5755 → 6667 [TX024] Transfer $959: B=1533 → 574, A=6667 → 7626 [TX025] Transfer $283: B=574 → 291, A=7626 → 7909 [TX026] Transfer $771: A=7909 → 7138, B=291 → 1062 [TX027] Transfer $457: A=7138 → 6681, B=1062 → 1519 [TX028] Transfer $599: B=1519 → 920, A=6681 → 7280 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	TX013	Payment PAY1015 processed twice	DUPLICATE_TXN	28	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX013", "explanation": "Payment PAY1015 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 28}
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 $853: A=4000 → 3147, B=4200 → 5053 [TX002] Transfer $321: A=3147 → 2826, B=5053 → 5374 [TX003] Transfer $805: B=5374 → 4569, A=2826 → 3631 [TX004] Transfer $358: A=3631 → 3273, B=4569 → 4927 [TX005] Transfer $450: B=4927 → 4477, A=3273 → 3723 [TX006] Transfer $70: B=4477 → 4407, A=3723 → 3793 [TX007] Transfer $831: B=4407 → 3576, A=3793 → 4624 [TX008] Transfer $871: A=4624 → 3753, B=3576 → 4447 [TX009] Transfer $695: B=4447 → 3752, A=3753 → 4448 [TX010] Transfer $530: A=4448 → 3918, B=3752 → 4282 [TX011] Transfer $340: A=3918 → 3578, B=4282 → 4622 [TX012] Transfer $239: B=4622 → 4383, A=3578 → 3817 [TX013] Transfer $192: B=4383 → 4191, A=3817 → 4009 [TX014] Transfer $31: B=4191 → 4160, A=4009 → 4040 [TX015] Transfer $608: A=4040 → 3432, B=4160 → 4766 [TX016] Transfer $723: B=4768 → 4045, A=3432 → 4155 [TX017] Transfer $287: A=4155 → 3868, B=4045 → 4332 [TX018] Transfer $820: A=3868 → 3048, B=4332 → 5152 [TX019] Transfer $335: A=3048 → 2713, B=5152 → 5487 [TX020] Transfer $118: A=2713 → 2595, B=5487 → 5605 [TX021] Transfer $542: B=5605 → 5063, A=2595 → 3137 [TX022] Transfer $627: B=5063 → 4436, A=3137 → 3764 [TX023] Transfer $358: B=4436 → 4078, A=3764 → 4122 [TX024] Transfer $634: B=4078 → 3444, A=4122 → 4756 [TX025] Transfer $942: A=4756 → 3814, B=3444 → 4386 [TX026] Transfer $322: A=3814 → 3492, B=4386 → 4708 [TX027] Transfer $314: A=3492 → 3178, B=4708 → 5022 [TX028] Transfer $384: A=3178 → 2794, B=5022 → 5406 [TX029] Transfer $430: A=2794 → 2364, B=5406 → 5836 [TX030] Transfer $435: A=2364 → 1929, B=5836 → 6271 [TX031] Transfer $652: A=1929 → 1277, B=6271 → 6923 [TX032] Transfer $503: A=1277 → 774, B=6923 → 7426 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	TX015	Mathematical calculation is incorrect	CALC_ERROR	32	{"bug_type": "CALC_ERROR", "bug_location": "TX015", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 32}
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 $245: A=4000 → 3755, B=4200 → 4445 [TX002] Transfer $139: B=4445 → 4306, A=3755 → 3894 [TX003] Transfer $661: B=4306 → 3645, A=3894 → 4555 [TX004] Transfer $665: A=4555 → 3890, B=3645 → 4310 [TX005] Transfer $236: B=4310 → 4074, A=3890 → 4126 [TX006] Transfer $250: B=4074 → 3824, A=4126 → 4376 [TX007] Transfer $930: A=4376 → 3446, B=3824 → 4754 [TX008] Transfer $624: A=3446 → 2822, B=4754 → 5378 [TX009] Transfer $189: B=5378 → 5189, A=2822 → 3011 [TX010] Transfer $68: B=5189 → 5121, A=3011 → 3079 [TX011] Transfer $978: B=5121 → 4143, A=3079 → 4057 [TX012] Transfer $651: A=4057 → 3406, B=4143 → 4794 [TX013] Transfer $130: A=3406 → 3276, B=4794 → 4924 [TX014] Transfer $608: A=3276 → 2668, B=4924 → 5532 [TX015] Transfer $521: A=2668 → 2147, B=5532 → 6053 [TX016] Transfer $744: A=2147 → 1403, B=6053 → 6797 [TX017] Transfer $170: B=6797 → 6627, A=1403 → 1573 [TX018] Transfer $436: A=1573 → 1137, B=6627 → 7063 [TX019] Transfer $312: A=1137 → 825, B=7063 → 7375 [TX020] Transfer $992: B=7375 → 6383, A=825 → 1817 [TX021] Transfer $885: A=1817 → 932, B=6383 → 7268 [TX022] Transfer $975: B=7268 → 6293, A=932 → 1907 [TX023] Transfer $388: B=6293 → 5905, A=1907 → 2295 [TX024] Transfer $453: A=2295 → 1842, B=5905 → 6358 [TX025] Transfer $780: B=6358 → 5578, A=1842 → 2622 [TX026] Transfer $22: A=2622 → 2600, B=5578 → 5598 [TX027] Transfer $779: B=5600 → 4821, A=2600 → 3379 [TX028] Transfer $568: B=4821 → 4253, A=3379 → 3947 [TX029] Transfer $391: A=3947 → 3556, B=4253 → 4644 [TX030] Transfer $466: B=4644 → 4178, A=3556 → 4022 [TX031] Transfer $577: B=4178 → 3601, A=4022 → 4599 [TX032] Transfer $343: B=3601 → 3258, A=4599 → 4942 [TX033] Transfer $202: A=4942 → 4740, B=3258 → 3460 [TX034] Transfer $6: A=4740 → 4734, B=3460 → 3466 [TX035] Transfer $505: A=4734 → 4229, B=3466 → 3971 [TX036] Transfer $964: B=3971 → 3007, A=4229 → 5193 [TX037] Transfer $395: B=3007 → 2612, A=5193 → 5588 [TX038] Transfer $658: B=2612 → 1954, A=5588 → 6246 [TX039] Transfer $908: A=6246 → 5338, B=1954 → 2862 [TX040] Transfer $396: A=5338 → 4942, B=2862 → 3258 [TX041] Transfer $783: A=4942 → 4159, B=3258 → 4041 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	41	{"bug_type": "CALC_ERROR", "bug_location": "TX026", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 41}
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 $273: B=4200 → 3927, A=4000 → 4273 [TX002] Transfer $711: A=4273 → 3562, B=3927 → 4638 [TX003] Transfer $264: A=3562 → 3298, B=4638 → 4902 [TX004] Transfer $51: A=3298 → 3247, B=4902 → 4953 [TX005] Transfer $752: B=4953 → 4201, A=3247 → 3999 [TX006] Transfer $907: B=4201 → 3294, A=3999 → 4906 [TX007] Transfer $904: B=3294 → 2390, A=4906 → 5810 [TX008] Transfer $561: B=2390 → 1829, A=5810 → 6371 [TX009] Transfer $850: B=1829 → 979, A=6371 → 7221 [TX010] Transfer $168: B=979 → 811, A=7221 → 7389 [TX011] Payment PAY1007: Transfer $19: B=811 → 792, A=7389 → 7408 [TX012] Transfer $328: B=792 → 464, A=7408 → 7736 [TX013] Transfer $39: B=464 → 425, A=7736 → 7775 [TX014] Transfer $194: B=425 → 231, A=7775 → 7969 [TX015] Transfer $562: A=7969 → 7407, B=231 → 793 [TX016] Transfer $610: A=7407 → 6797, B=793 → 1403 [TX017] Transfer $443: B=1403 → 960, A=6797 → 7240 [TX018] Transfer $162: A=7240 → 7078, B=960 → 1122 [TX019] Transfer $341: A=7078 → 6737, B=1122 → 1463 [TX020] Transfer $421: A=6737 → 6316, B=1463 → 1884 [TX021] Transfer $306: B=1884 → 1578, A=6316 → 6622 [TX022] Payment PAY1007: Transfer $19: B=1578 → 1559, A=6622 → 6641 [TX023] Transfer $52: A=6641 → 6589, B=1559 → 1611 [TX024] Transfer $159: B=1611 → 1452, A=6589 → 6748 [TX025] Transfer $5: A=6748 → 6743, B=1452 → 1457 [TX026] Transfer $303: B=1457 → 1154, A=6743 → 7046 [TX027] Transfer $101: B=1154 → 1053, A=7046 → 7147 [TX028] Transfer $176: A=7147 → 6971, B=1053 → 1229 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	TX022	Payment PAY1007 processed twice	DUPLICATE_TXN	28	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX022", "explanation": "Payment PAY1007 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 28}
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 $28: B=4200 → 4172, A=4000 → 4028 [TX002] Transfer $986: A=4028 → 3042, B=4172 → 5158 [TX003] Transfer $592: A=3042 → 2450, B=5158 → 5750 [TX004] Transfer $483: A=2450 → 1967, B=5750 → 6233 [TX005] Transfer $187: B=6233 → 6046, A=1967 → 2154 [TX006] Transfer $994: B=6046 → 5052, A=2154 → 3148 [TX007] Transfer $358: A=3148 → 2790, B=5052 → 5410 [TX008] Transfer $330: B=5410 → 5080, A=2790 → 3120 [TX009] Transfer $339: A=3120 → 2781, B=5080 → 5419 [TX010] Transfer $297: B=5419 → 5122, A=2781 → 3078 [TX011] Transfer $467: B=5122 → 4655, A=3078 → 3545 [TX012] Transfer $260: A=3545 → 3285, B=4655 → 4915 [TX013] Transfer $995: B=4915 → 3920, A=3285 → 4280 [TX014] Transfer $675: B=3920 → 3245, A=4280 → 4955 [TX015] Transfer $57: B=3245 → 3188, A=4955 → 5012 [TX016] Transfer $639: A=5012 → 4373, B=3188 → 3827 [TX017] Transfer $780: B=3827 → 3047, A=4373 → 5153 [TX018] Transfer $275: A=5153 → 4878, B=3047 → 3322 [TX019] Transfer $450: A=4878 → 4428, B=3322 → 3772 [TX020] Transfer $31: B=3772 → 3741, A=4428 → 4459 [TX021] Transfer $320: A=4459 → 4139, B=3741 → 4061 [TX022] Transfer $97: A=4139 → 4042, B=4061 → 4158 [TX023] Transfer $474: A=4042 → 3568, B=4158 → 4632 [TX024] Transfer $512: A=3568 → 3056, B=4632 → 5144 [TX025] Transfer $427: B=5144 → 4717, A=3056 → 3483 [TX026] Transfer $251: B=4717 → 4466, A=3483 → 3734 [TX027] Transfer $394: B=4466 → 4072, A=3734 → 4128 [TX028] Thread T1: READ A=4128 [TX029] Thread T2: READ A=4128 [TX030] Thread T1: COMMIT A=4128 → 3948 [TX031] Thread T2: COMMIT A=4128 → 4044 [TX032] Transfer $793: A=4044 → 3251, B=4072 → 4865 [TX033] Transfer $958: B=4865 → 3907, A=3251 → 4209 [TX034] Transfer $291: B=3907 → 3616, A=4209 → 4500 [TX035] Transfer $888: B=3616 → 2728, A=4500 → 5388 [TX036] Transfer $553: A=5388 → 4835, B=2728 → 3281 [TX037] Transfer $342: B=3281 → 2939, A=4835 → 5177 [TX038] Transfer $957: B=2939 → 1982, A=5177 → 6134 [TX039] Transfer $716: B=1982 → 1266, A=6134 → 6850 [TX040] Transfer $241: A=6850 → 6609, B=1266 → 1507 [TX041] Transfer $327: B=1507 → 1180, A=6609 → 6936 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	41	{"bug_type": "LOST_UPDATE", "bug_location": "TX031", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 41}
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 $679: A=4000 → 3321, B=4200 → 4879 [TX002] Transfer $217: B=4879 → 4662, A=3321 → 3537 [TX003] Transfer $99: B=4662 → 4563, A=3538 → 3637 [TX004] Transfer $563: A=3637 → 3074, B=4563 → 5126 [TX005] Transfer $791: A=3074 → 2283, B=5126 → 5917 [TX006] Transfer $108: B=5917 → 5809, A=2283 → 2391 [TX007] Transfer $88: B=5809 → 5721, A=2391 → 2479 [TX008] Transfer $236: B=5721 → 5485, A=2479 → 2715 [TX009] Transfer $455: A=2715 → 2260, B=5485 → 5940 [TX010] Transfer $541: A=2260 → 1719, B=5940 → 6481 [TX011] Transfer $37: A=1719 → 1682, B=6481 → 6518 [TX012] Transfer $886: B=6518 → 5632, A=1682 → 2568 [TX013] Transfer $1000: B=5632 → 4632, A=2568 → 3568 [TX014] Transfer $140: B=4632 → 4492, A=3568 → 3708 [TX015] Transfer $648: A=3708 → 3060, B=4492 → 5140 [TX016] Transfer $932: B=5140 → 4208, A=3060 → 3992 [TX017] Transfer $554: B=4208 → 3654, A=3992 → 4546 [TX018] Transfer $454: A=4546 → 4092, B=3654 → 4108 [TX019] Transfer $424: B=4108 → 3684, A=4092 → 4516 [TX020] Transfer $312: B=3684 → 3372, A=4516 → 4828 [TX021] Transfer $537: A=4828 → 4291, B=3372 → 3909 [TX022] Transfer $295: A=4291 → 3996, B=3909 → 4204 [TX023] Transfer $706: B=4204 → 3498, A=3996 → 4702 [TX024] Transfer $308: B=3498 → 3190, A=4702 → 5010 [TX025] Transfer $819: A=5010 → 4191, B=3190 → 4009 [TX026] Transfer $817: B=4009 → 3192, A=4191 → 5008 [TX027] Transfer $195: A=5008 → 4813, B=3192 → 3387 [TX028] Transfer $406: B=3387 → 2981, A=4813 → 5219 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	TX002	Mathematical calculation is incorrect	CALC_ERROR	28	{"bug_type": "CALC_ERROR", "bug_location": "TX002", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 28}
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 $746: A=4000 → 3254, B=4200 → 4946 [TX002] Transfer $646: B=4946 → 4300, A=3254 → 3900 [TX003] Transfer $588: B=4300 → 3712, A=3900 → 4488 [TX004] Transfer $830: A=4488 → 3658, B=3712 → 4542 [TX005] Transfer $498: A=3658 → 3160, B=4542 → 5040 [TX006] Transfer $519: A=3160 → 2641, B=5040 → 5559 [TX007] Transfer $260: A=2641 → 2381, B=5559 → 5819 [TX008] Transfer $283: A=2381 → 2098, B=5819 → 6102 [TX009] Transfer $761: B=6102 → 5341, A=2098 → 2859 [TX010] Transfer $933: A=2859 → 1926, B=5341 → 6274 [TX011] Transfer $380: A=1926 → 1546, B=6274 → 6654 [TX012] Transfer $1554: A=1546 → -8, B=6654 → 8208 [TX013] Transfer $820: B=8208 → 7388, A=-8 → 812 [TX014] Transfer $88: A=812 → 724, B=7388 → 7476 [TX015] Transfer $509: A=724 → 215, B=7476 → 7985 [TX016] Transfer $245: B=7985 → 7740, A=215 → 460 [TX017] Transfer $217: B=7740 → 7523, A=460 → 677 [TX018] Transfer $659: B=7523 → 6864, A=677 → 1336 [TX019] Transfer $55: B=6864 → 6809, A=1336 → 1391 [TX020] Transfer $410: A=1391 → 981, B=6809 → 7219 [TX021] Transfer $489: B=7219 → 6730, A=981 → 1470 [TX022] Transfer $701: A=1470 → 769, B=6730 → 7431 [TX023] Transfer $270: B=7431 → 7161, A=769 → 1039 [TX024] Transfer $14: A=1039 → 1025, B=7161 → 7175 [TX025] Transfer $393: B=7175 → 6782, A=1025 → 1418 [TX026] Transfer $101: B=6782 → 6681, A=1418 → 1519 [TX027] Transfer $627: B=6681 → 6054, A=1519 → 2146 [TX028] Transfer $278: B=6054 → 5776, A=2146 → 2424 [TX029] Transfer $263: B=5776 → 5513, A=2424 → 2687 [TX030] Transfer $793: B=5513 → 4720, A=2687 → 3480 [TX031] Transfer $534: A=3480 → 2946, B=4720 → 5254 [TX032] Transfer $322: B=5254 → 4932, A=2946 → 3268 [TX033] Transfer $853: A=3268 → 2415, B=4932 → 5785 [TX034] Transfer $423: A=2415 → 1992, B=5785 → 6208 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	TX012	Account balance goes negative	NEGATIVE_BAL	34	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX012", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 34}
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 $952: A=4000 → 3048, B=4200 → 5152 [TX002] Transfer $398: B=5152 → 4754, A=3048 → 3446 [TX003] Transfer $470: B=4754 → 4284, A=3446 → 3916 [TX004] Transfer $1000: A=3916 → 2916, B=4284 → 5284 [TX005] Transfer $345: B=5284 → 4939, A=2916 → 3261 [TX006] Transfer $710: A=3261 → 2551, B=4939 → 5649 [TX007] Transfer $141: A=2551 → 2410, B=5649 → 5790 [TX008] Transfer $471: A=2410 → 1939, B=5790 → 6261 [TX009] Transfer $780: B=6261 → 5481, A=1939 → 2719 [TX010] Transfer $909: B=5481 → 4572, A=2719 → 3628 [TX011] Transfer $810: B=4572 → 3762, A=3628 → 4438 [TX012] Transfer $90: A=4438 → 4348, B=3762 → 3852 [TX013] Transfer $884: B=3852 → 2968, A=4348 → 5232 [TX014] Transfer $859: A=5232 → 4373, B=2968 → 3827 [TX015] Transfer $16: B=3827 → 3811, A=4373 → 4389 [TX016] Transfer $255: B=3811 → 3556, A=4389 → 4644 [TX017] Transfer $595: B=3556 → 2961, A=4644 → 5239 [TX018] Transfer $937: A=5239 → 4302, B=2961 → 3898 [TX019] Transfer $47: A=4302 → 4255, B=3898 → 3945 [TX020] Transfer $753: A=4255 → 3502, B=3945 → 4698 [TX021] Transfer $545: A=3502 → 2957, B=4698 → 5243 [TX022] Transfer $831: B=5243 → 4412, A=2957 → 3788 [TX023] Transfer $509: A=3788 → 3279, B=4412 → 4921 [TX024] Transfer $573: A=3279 → 2706, B=4921 → 5494 [TX025] Transfer $974: A=2706 → 1732, B=5494 → 6468 [TX026] Transfer $369: A=1732 → 1363, B=6468 → 6837 [TX027] Transfer $665: B=6837 → 6172, A=1363 → 2028 [TX028] Transfer $493: A=2028 → 1535, B=6172 → 6665 [TX029] Transfer $6680: B=6665 → -15, A=1535 → 8215 [TX030] Transfer $476: A=8215 → 7739, B=-15 → 461 [TX031] Transfer $191: A=7739 → 7548, B=461 → 652 [TX032] Transfer $3: B=652 → 649, A=7548 → 7551 [TX033] Transfer $916: A=7551 → 6635, B=649 → 1565 [TX034] Transfer $305: B=1565 → 1260, A=6635 → 6940 [TX035] Transfer $716: B=1260 → 544, A=6940 → 7656 [TX036] Transfer $637: A=7656 → 7019, B=544 → 1181 [TX037] Transfer $529: B=1181 → 652, A=7019 → 7548 [TX038] Transfer $115: B=652 → 537, A=7548 → 7663 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	TX029	Account balance goes negative	NEGATIVE_BAL	38	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX029", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 38}
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 $410: B=4200 → 3790, A=4000 → 4410 [TX002] Transfer $247: B=3790 → 3543, A=4410 → 4657 [TX003] Transfer $23: B=3543 → 3520, A=4657 → 4680 [TX004] Transfer $399: A=4680 → 4281, B=3520 → 3919 [TX005] Transfer $664: B=3919 → 3255, A=4281 → 4945 [TX006] Transfer $307: A=4945 → 4638, B=3255 → 3562 [TX007] Transfer $755: B=3562 → 2807, A=4638 → 5393 [TX008] Transfer $369: B=2807 → 2438, A=5393 → 5762 [TX009] Transfer $526: A=5762 → 5236, B=2438 → 2964 [TX010] Transfer $458: A=5236 → 4778, B=2964 → 3422 [TX011] Transfer $276: B=3422 → 3146, A=4778 → 5054 [TX012] Transfer $776: B=3146 → 2370, A=5054 → 5830 [TX013] Transfer $630: B=2370 → 1740, A=5830 → 6460 [TX014] Transfer $647: A=6460 → 5813, B=1740 → 2387 [TX015] Transfer $43: B=2387 → 2344, A=5813 → 5856 [TX016] Transfer $694: B=2344 → 1650, A=5856 → 6550 [TX017] Transfer $955: A=6550 → 5595, B=1650 → 2605 [TX018] Transfer $299: B=2605 → 2306, A=5595 → 5894 [TX019] Transfer $83: B=2306 → 2223, A=5894 → 5977 [TX020] Thread T1: READ B=2223 [TX021] Thread T2: READ B=2223 [TX022] Thread T1: COMMIT B=2223 → 2097 [TX023] Thread T2: COMMIT B=2223 → 2135 [TX024] Transfer $863: A=5977 → 5114, B=2135 → 2998 [TX025] Transfer $304: A=5114 → 4810, B=2998 → 3302 [TX026] Transfer $941: A=4810 → 3869, B=3302 → 4243 [TX027] Transfer $524: A=3869 → 3345, B=4243 → 4767 [TX028] Transfer $98: B=4767 → 4669, A=3345 → 3443 [TX029] Transfer $365: B=4669 → 4304, A=3443 → 3808 [TX030] Transfer $789: B=4304 → 3515, A=3808 → 4597 [TX031] Transfer $760: A=4597 → 3837, B=3515 → 4275 [TX032] Transfer $807: B=4275 → 3468, A=3837 → 4644 [TX033] Transfer $48: A=4644 → 4596, B=3468 → 3516 [TX034] Transfer $899: A=4596 → 3697, B=3516 → 4415 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	TX023	Thread T2 overwrites T1's change	LOST_UPDATE	34	{"bug_type": "LOST_UPDATE", "bug_location": "TX023", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 34}
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 $574: A=4000 → 3426, B=4200 → 4774 [TX002] Transfer $316: B=4774 → 4458, A=3426 → 3742 [TX003] Transfer $755: B=4458 → 3703, A=3742 → 4497 [TX004] Transfer $767: A=4497 → 3730, B=3703 → 4470 [TX005] Transfer $803: A=3730 → 2927, B=4470 → 5273 [TX006] Transfer $221: A=2927 → 2706, B=5273 → 5494 [TX007] Transfer $822: B=5494 → 4672, A=2706 → 3528 [TX008] Transfer $400: A=3528 → 3128, B=4672 → 5072 [TX009] Transfer $845: A=3128 → 2283, B=5072 → 5917 [TX010] Transfer $950: A=2283 → 1333, B=5917 → 6867 [TX011] Transfer $67: B=6867 → 6800, A=1333 → 1400 [TX012] Transfer $381: B=6800 → 6419, A=1400 → 1781 [TX013] Transfer $743: A=1781 → 1038, B=6419 → 7162 [TX014] Transfer $630: B=7162 → 6532, A=1038 → 1668 [TX015] Transfer $970: B=6532 → 5562, A=1668 → 2638 [TX016] Transfer $451: A=2638 → 2187, B=5562 → 6013 [TX017] Transfer $872: A=2187 → 1315, B=6013 → 6885 [TX018] Transfer $36: B=6885 → 6849, A=1315 → 1351 [TX019] Transfer $692: A=1351 → 659, B=6849 → 7541 [TX020] Transfer $246: A=659 → 413, B=7541 → 7787 [TX021] Transfer $46: A=413 → 367, B=7787 → 7833 [TX022] Transfer $363: B=7833 → 7470, A=367 → 730 [TX023] Transfer $602: B=7470 → 6868, A=730 → 1332 [TX024] Transfer $756: A=1332 → 576, B=6868 → 7624 [TX025] Transfer $283: A=576 → 293, B=7624 → 7907 [TX026] Transfer $357: B=7907 → 7550, A=293 → 650 [TX027] Transfer $622: B=7550 → 6928, A=650 → 1272 [TX028] Transfer $954: A=1272 → 318, B=6928 → 7882 [TX029] Transfer $269: B=7882 → 7613, A=318 → 587 [TX030] Transfer $261: A=587 → 326, B=7613 → 7874 [TX031] Transfer $130: A=326 → 196, B=7874 → 8004 [TX032] Transfer $8008: B=8004 → -4, A=196 → 8204 [TX033] Balance check: B=-4 [TX034] Balance check: B=-4 [TX035] Balance check: B=-4 [TX036] Balance check: B=-4 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	36	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX032", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 36}
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 $395: B=4200 → 3805, A=4000 → 4395 [TX002] Transfer $541: A=4395 → 3854, B=3805 → 4346 [TX003] Transfer $242: A=3854 → 3612, B=4346 → 4588 [TX004] Transfer $210: B=4588 → 4378, A=3612 → 3822 [TX005] Transfer $573: A=3822 → 3249, B=4378 → 4951 [TX006] Transfer $945: B=4951 → 4006, A=3249 → 4194 [TX007] Transfer $935: A=4194 → 3259, B=4006 → 4941 [TX008] Transfer $871: B=4941 → 4070, A=3259 → 4130 [TX009] Transfer $473: A=4130 → 3657, B=4070 → 4543 [TX010] Transfer $250: A=3657 → 3407, B=4543 → 4793 [TX011] Transfer $59: A=3407 → 3348, B=4793 → 4852 [TX012] Transfer $987: A=3348 → 2361, B=4852 → 5839 [TX013] Transfer $752: A=2361 → 1609, B=5839 → 6591 [TX014] Transfer $382: A=1609 → 1227, B=6591 → 6973 [TX015] Transfer $680: A=1227 → 547, B=6973 → 7653 [TX016] Transfer $430: A=547 → 117, B=7653 → 8083 [TX017] Transfer $6: A=117 → 111, B=8083 → 8089 [TX018] Transfer $82: B=8089 → 8007, A=111 → 193 [TX019] Transfer $3: A=193 → 190, B=8007 → 8010 [TX020] Transfer $785: B=8010 → 7225, A=190 → 975 [TX021] Transfer $763: A=975 → 212, B=7225 → 7988 [TX022] Transfer $62: A=212 → 150, B=7988 → 8050 [TX023] Transfer $456: B=8050 → 7594, A=150 → 606 [TX024] Transfer $58: A=606 → 548, B=7594 → 7652 [TX025] Transfer $330: A=548 → 218, B=7652 → 7982 [TX026] Transfer $66: A=218 → 152, B=7982 → 8048 [TX027] Transfer $27: A=152 → 125, B=8048 → 8075 [TX028] Transfer $569: B=8075 → 7506, A=125 → 694 [TX029] Transfer $728: B=7506 → 6778, A=694 → 1422 [TX030] Transfer $955: A=1422 → 467, B=6778 → 7733 [TX031] Transfer $49: A=467 → 418, B=7733 → 7782 [TX032] Transfer $762: B=7782 → 7020, A=418 → 1180 [TX033] Transfer $1200: A=1180 → -20, B=7020 → 8220 [TX034] Balance check: A=-20 [TX035] Transfer $844: B=8220 → 7376, A=-20 → 824 [TX036] Transfer $490: A=824 → 334, B=7376 → 7866 [TX037] Transfer $849: B=7866 → 7017, A=334 → 1183 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	TX033	Account balance goes negative	NEGATIVE_BAL	37	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX033", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 37}
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 $887: B=4200 → 3313, A=4000 → 4887 [TX002] Payment PAY1011: Transfer $301: A=4887 → 4586, B=3313 → 3614 [TX003] Transfer $391: B=3614 → 3223, A=4586 → 4977 [TX004] Transfer $498: A=4977 → 4479, B=3223 → 3721 [TX005] Transfer $205: A=4479 → 4274, B=3721 → 3926 [TX006] Transfer $42: B=3926 → 3884, A=4274 → 4316 [TX007] Transfer $343: A=4316 → 3973, B=3884 → 4227 [TX008] Transfer $764: B=4227 → 3463, A=3973 → 4737 [TX009] Transfer $357: A=4737 → 4380, B=3463 → 3820 [TX010] Transfer $642: B=3820 → 3178, A=4380 → 5022 [TX011] Transfer $515: B=3178 → 2663, A=5022 → 5537 [TX012] Transfer $642: B=2663 → 2021, A=5537 → 6179 [TX013] Transfer $913: B=2021 → 1108, A=6179 → 7092 [TX014] Transfer $232: A=7092 → 6860, B=1108 → 1340 [TX015] Payment PAY1011: Transfer $301: A=6860 → 6559, B=1340 → 1641 [TX016] Transfer $920: A=6559 → 5639, B=1641 → 2561 [TX017] Transfer $91: B=2561 → 2470, A=5639 → 5730 [TX018] Transfer $429: B=2470 → 2041, A=5730 → 6159 [TX019] Transfer $438: A=6159 → 5721, B=2041 → 2479 [TX020] Transfer $461: B=2479 → 2018, A=5721 → 6182 [TX021] Transfer $670: A=6182 → 5512, B=2018 → 2688 [TX022] Transfer $885: A=5512 → 4627, B=2688 → 3573 [TX023] Transfer $707: A=4627 → 3920, B=3573 → 4280 [TX024] Transfer $932: A=3920 → 2988, B=4280 → 5212 [TX025] Transfer $327: A=2988 → 2661, B=5212 → 5539 [TX026] Transfer $190: A=2661 → 2471, B=5539 → 5729 [TX027] Transfer $746: B=5729 → 4983, A=2471 → 3217 [TX028] Transfer $903: A=3217 → 2314, B=4983 → 5886 [TX029] Transfer $312: B=5886 → 5574, A=2314 → 2626 [TX030] Transfer $157: B=5574 → 5417, A=2626 → 2783 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	TX015	Payment PAY1011 processed twice	DUPLICATE_TXN	30	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX015", "explanation": "Payment PAY1011 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 30}
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 $60: A=4000 → 3940, B=4200 → 4260 [TX002] Transfer $177: B=4260 → 4083, A=3940 → 4117 [TX003] Transfer $402: B=4083 → 3681, A=4117 → 4519 [TX004] Transfer $134: A=4519 → 4385, B=3681 → 3815 [TX005] Transfer $762: B=3815 → 3053, A=4385 → 5147 [TX006] Transfer $980: A=5147 → 4167, B=3053 → 4033 [TX007] Transfer $893: A=4167 → 3274, B=4033 → 4926 [TX008] Transfer $444: A=3274 → 2830, B=4926 → 5370 [TX009] Transfer $620: B=5370 → 4750, A=2830 → 3450 [TX010] Transfer $516: B=4750 → 4234, A=3450 → 3966 [TX011] Transfer $208: B=4234 → 4026, A=3966 → 4174 [TX012] Transfer $458: A=4174 → 3716, B=4026 → 4484 [TX013] Transfer $621: A=3716 → 3095, B=4484 → 5105 [TX014] Transfer $934: A=3095 → 2161, B=5105 → 6039 [TX015] Transfer $475: B=6039 → 5564, A=2161 → 2636 [TX016] Transfer $296: A=2636 → 2340, B=5564 → 5860 [TX017] Transfer $719: B=5860 → 5141, A=2340 → 3059 [TX018] Transfer $629: B=5141 → 4512, A=3059 → 3688 [TX019] Transfer $257: A=3688 → 3431, B=4512 → 4769 [TX020] Transfer $470: A=3431 → 2961, B=4769 → 5237 [TX021] Transfer $404: A=2961 → 2557, B=5239 → 5643 [TX022] Transfer $908: A=2557 → 1649, B=5643 → 6551 [TX023] Transfer $905: A=1649 → 744, B=6551 → 7456 [TX024] Transfer $716: B=7456 → 6740, A=744 → 1460 [TX025] Transfer $423: A=1460 → 1037, B=6740 → 7163 [TX026] Transfer $80: A=1037 → 957, B=7163 → 7243 [TX027] Transfer $421: A=957 → 536, B=7243 → 7664 [TX028] Transfer $260: B=7664 → 7404, A=536 → 796 [TX029] Transfer $475: A=796 → 321, B=7404 → 7879 [TX030] Transfer $165: A=321 → 156, B=7879 → 8044 [TX031] Transfer $353: B=8044 → 7691, A=156 → 509 [TX032] Transfer $408: B=7691 → 7283, A=509 → 917 [TX033] Transfer $258: A=917 → 659, B=7283 → 7541 [TX034] Transfer $336: A=659 → 323, B=7541 → 7877 [TX035] Transfer $474: B=7877 → 7403, A=323 → 797 [TX036] Transfer $563: A=797 → 234, B=7403 → 7966 [TX037] Transfer $37: A=234 → 197, B=7966 → 8003 [TX038] Transfer $863: B=8003 → 7140, A=197 → 1060 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	TX020	Mathematical calculation is incorrect	CALC_ERROR	38	{"bug_type": "CALC_ERROR", "bug_location": "TX020", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 38}
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 $814: B=4200 → 3386, A=4000 → 4814 [TX002] Transfer $442: A=4814 → 4372, B=3386 → 3828 [TX003] Transfer $425: B=3828 → 3403, A=4372 → 4797 [TX004] Transfer $410: B=3403 → 2993, A=4797 → 5207 [TX005] Transfer $322: B=2993 → 2671, A=5207 → 5529 [TX006] Transfer $683: B=2671 → 1988, A=5529 → 6212 [TX007] Transfer $978: B=1988 → 1010, A=6212 → 7190 [TX008] Transfer $70: A=7190 → 7120, B=1010 → 1080 [TX009] Transfer $97: A=7120 → 7023, B=1080 → 1177 [TX010] Transfer $764: B=1177 → 413, A=7023 → 7787 [TX011] Transfer $286: B=413 → 127, A=7787 → 8073 [TX012] Transfer $688: A=8073 → 7385, B=127 → 815 [TX013] Transfer $364: A=7385 → 7021, B=815 → 1179 [TX014] Transfer $993: B=1179 → 186, A=7021 → 8014 [TX015] Transfer $47: B=186 → 139, A=8014 → 8061 [TX016] Transfer $160: A=8061 → 7901, B=139 → 299 [TX017] Transfer $29: B=299 → 270, A=7901 → 7930 [TX018] Transfer $274: B=270 → -4, A=7930 → 8204 [TX019] Balance check: B=-4 [TX020] Balance check: B=-4 [TX021] Balance check: B=-4 [TX022] Transfer $721: A=8204 → 7483, B=-4 → 717 [TX023] Transfer $361: B=717 → 356, A=7483 → 7844 [TX024] Transfer $892: A=7844 → 6952, B=356 → 1248 [TX025] Transfer $73: A=6952 → 6879, B=1248 → 1321 [TX026] Transfer $95: A=6879 → 6784, B=1321 → 1416 [TX027] Transfer $431: A=6784 → 6353, B=1416 → 1847 [TX028] Transfer $163: B=1847 → 1684, A=6353 → 6516 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	TX018	Account balance goes negative	NEGATIVE_BAL	28	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX018", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 28}
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 $672: A=4000 → 3328, B=4200 → 4872 [TX002] Transfer $365: A=3328 → 2963, B=4872 → 5237 [TX003] Transfer $432: A=2963 → 2531, B=5237 → 5669 [TX004] Transfer $268: B=5669 → 5401, A=2531 → 2799 [TX005] Transfer $873: B=5401 → 4528, A=2799 → 3672 [TX006] Transfer $56: A=3672 → 3616, B=4528 → 4584 [TX007] Transfer $912: A=3616 → 2704, B=4584 → 5496 [TX008] Transfer $890: A=2704 → 1814, B=5496 → 6386 [TX009] Transfer $425: B=6386 → 5961, A=1814 → 2239 [TX010] Transfer $142: A=2239 → 2097, B=5961 → 6103 [TX011] Transfer $421: A=2097 → 1676, B=6103 → 6524 [TX012] Transfer $325: B=6524 → 6199, A=1676 → 2001 [TX013] Transfer $501: A=2001 → 1500, B=6199 → 6700 [TX014] Transfer $322: B=6700 → 6378, A=1500 → 1822 [TX015] Transfer $464: A=1822 → 1358, B=6378 → 6842 [TX016] Transfer $781: B=6842 → 6061, A=1358 → 2139 [TX017] Transfer $503: A=2139 → 1636, B=6061 → 6564 [TX018] Transfer $631: A=1636 → 1005, B=6564 → 7195 [TX019] Transfer $415: B=7195 → 6780, A=1005 → 1420 [TX020] Transfer $394: B=6780 → 6386, A=1420 → 1814 [TX021] Transfer $548: A=1814 → 1266, B=6386 → 6934 [TX022] Transfer $974: A=1266 → 292, B=6934 → 7908 [TX023] Transfer $137: A=292 → 155, B=7908 → 8045 [TX024] Transfer $45: A=155 → 110, B=8045 → 8090 [TX025] Transfer $5: A=110 → 105, B=8090 → 8095 [TX026] Transfer $134: B=8095 → 7961, A=105 → 239 [TX027] Transfer $256: A=239 → -17, B=7961 → 8217 [TX028] Transfer $68: B=8217 → 8149, A=-17 → 51 [TX029] Balance check: A=51 [TX030] Transfer $747: B=8149 → 7402, A=51 → 798 [TX031] Transfer $911: B=7402 → 6491, A=798 → 1709 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	TX027	Account balance goes negative	NEGATIVE_BAL	31	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX027", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 31}
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 $215: A=4000 → 3785, B=4200 → 4415 [TX002] Transfer $981: B=4415 → 3434, A=3785 → 4766 [TX003] Transfer $961: A=4766 → 3805, B=3434 → 4395 [TX004] Transfer $766: A=3805 → 3039, B=4395 → 5161 [TX005] Transfer $714: B=5161 → 4447, A=3039 → 3753 [TX006] Transfer $939: A=3753 → 2814, B=4447 → 5386 [TX007] Transfer $796: A=2814 → 2018, B=5386 → 6182 [TX008] Transfer $479: B=6182 → 5703, A=2018 → 2497 [TX009] Transfer $269: B=5703 → 5434, A=2497 → 2766 [TX010] Transfer $479: B=5434 → 4955, A=2766 → 3245 [TX011] Transfer $781: A=3245 → 2464, B=4955 → 5736 [TX012] Transfer $381: B=5736 → 5355, A=2464 → 2845 [TX013] Transfer $48: B=5355 → 5307, A=2845 → 2893 [TX014] Transfer $18: A=2893 → 2875, B=5307 → 5325 [TX015] Transfer $304: B=5325 → 5021, A=2875 → 3179 [TX016] Transfer $339: A=3179 → 2840, B=5021 → 5360 [TX017] Transfer $585: A=2840 → 2255, B=5360 → 5945 [TX018] Transfer $565: A=2255 → 1690, B=5945 → 6510 [TX019] Transfer $783: B=6510 → 5727, A=1690 → 2473 [TX020] Transfer $473: B=5727 → 5254, A=2473 → 2946 [TX021] Transfer $175: A=2946 → 2771, B=5254 → 5429 [TX022] Transfer $190: A=2771 → 2581, B=5429 → 5619 [TX023] Transfer $861: A=2581 → 1720, B=5619 → 6480 [TX024] Transfer $784: A=1720 → 936, B=6480 → 7264 [TX025] Transfer $142: A=936 → 794, B=7264 → 7406 [TX026] Transfer $156: A=794 → 638, B=7406 → 7562 [TX027] Transfer $519: A=638 → 119, B=7562 → 8081 [TX028] Transfer $63: B=8081 → 8018, A=119 → 182 [TX029] Transfer $18: B=8018 → 8000, A=182 → 200 [TX030] Transfer $3: A=200 → 197, B=8000 → 8003 [TX031] Transfer $70: A=197 → 127, B=8003 → 8073 [TX032] Transfer $516: B=8073 → 7557, A=127 → 643 [TX033] Transfer $111: B=7557 → 7446, A=643 → 754 [TX034] Transfer $248: A=754 → 506, B=7446 → 7694 [TX035] Transfer $183: A=506 → 323, B=7694 → 7877 [TX036] Transfer $82: B=7877 → 7795, A=323 → 405 [TX037] Transfer $472: B=7795 → 7323, A=405 → 877 [TX038] Transfer $309: A=877 → 568, B=7323 → 7632 [TX039] Transfer $49: A=568 → 519, B=7632 → 7679 [TX040] Transfer $567: B=7681 → 7114, A=519 → 1086 [TX041] Transfer $654: B=7114 → 6460, A=1086 → 1740 [TX042] Transfer $86: A=1740 → 1654, B=6460 → 6546 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	TX039	Mathematical calculation is incorrect	CALC_ERROR	42	{"bug_type": "CALC_ERROR", "bug_location": "TX039", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 42}
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 $118: B=4200 → 4082, A=4000 → 4118 [TX002] Transfer $4: A=4118 → 4114, B=4082 → 4086 [TX003] Transfer $851: B=4086 → 3235, A=4114 → 4965 [TX004] Transfer $720: B=3235 → 2515, A=4965 → 5685 [TX005] Transfer $920: A=5685 → 4765, B=2515 → 3435 [TX006] Transfer $145: A=4765 → 4620, B=3435 → 3580 [TX007] Transfer $262: B=3580 → 3318, A=4620 → 4882 [TX008] Transfer $125: A=4882 → 4757, B=3318 → 3443 [TX009] Transfer $470: B=3443 → 2973, A=4757 → 5227 [TX010] Transfer $112: A=5227 → 5115, B=2973 → 3085 [TX011] Transfer $950: B=3085 → 2135, A=5115 → 6065 [TX012] Transfer $470: A=6065 → 5595, B=2135 → 2605 [TX013] Transfer $6: A=5595 → 5589, B=2605 → 2611 [TX014] Transfer $860: A=5589 → 4729, B=2611 → 3471 [TX015] Transfer $710: B=3471 → 2761, A=4729 → 5439 [TX016] Transfer $108: A=5439 → 5331, B=2761 → 2869 [TX017] Transfer $518: B=2869 → 2351, A=5331 → 5849 [TX018] Transfer $625: B=2351 → 1726, A=5849 → 6474 [TX019] Transfer $409: A=6474 → 6065, B=1726 → 2135 [TX020] Transfer $465: B=2135 → 1670, A=6065 → 6530 [TX021] Transfer $424: A=6530 → 6106, B=1670 → 2094 [TX022] Transfer $730: B=2094 → 1364, A=6106 → 6836 [TX023] Transfer $216: A=6836 → 6620, B=1364 → 1580 [TX024] Transfer $945: B=1580 → 635, A=6620 → 7565 [TX025] Transfer $517: A=7565 → 7048, B=635 → 1152 [TX026] Transfer $781: B=1152 → 371, A=7048 → 7829 [TX027] Transfer $215: B=371 → 156, A=7829 → 8044 [TX028] Transfer $53: B=156 → 103, A=8044 → 8097 [TX029] Transfer $27: A=8097 → 8070, B=103 → 130 [TX030] Transfer $3: B=130 → 127, A=8070 → 8073 [TX031] Thread T1: READ A=8073 [TX032] Thread T2: READ A=8073 [TX033] Thread T1: COMMIT A=8073 → 7972 [TX034] Thread T2: COMMIT A=8073 → 7955 [TX035] Transfer $701: A=7955 → 7254, B=127 → 828 [TX036] Transfer $65: B=828 → 763, A=7254 → 7319 [TX037] Transfer $556: B=763 → 207, A=7319 → 7875 [TX038] Transfer $835: A=7875 → 7040, B=207 → 1042 [TX039] Transfer $632: B=1042 → 410, A=7040 → 7672 [TX040] Transfer $245: A=7672 → 7427, B=410 → 655 [TX041] Transfer $392: B=655 → 263, A=7427 → 7819 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	TX034	Thread T2 overwrites T1's change	LOST_UPDATE	41	{"bug_type": "LOST_UPDATE", "bug_location": "TX034", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 41}
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 $763: A=4000 → 3237, B=4200 → 4963 [TX002] Transfer $637: B=4963 → 4326, A=3237 → 3874 [TX003] Transfer $935: B=4326 → 3391, A=3874 → 4809 [TX004] Transfer $796: B=3391 → 2595, A=4809 → 5605 [TX005] Transfer $461: A=5605 → 5144, B=2595 → 3056 [TX006] Transfer $193: A=5144 → 4951, B=3056 → 3249 [TX007] Transfer $388: A=4951 → 4563, B=3249 → 3637 [TX008] Transfer $287: A=4563 → 4276, B=3637 → 3924 [TX009] Transfer $166: B=3924 → 3758, A=4276 → 4442 [TX010] Transfer $340: B=3758 → 3418, A=4442 → 4782 [TX011] Transfer $42: B=3418 → 3376, A=4782 → 4824 [TX012] Transfer $613: A=4824 → 4211, B=3376 → 3989 [TX013] Transfer $504: A=4211 → 3707, B=3989 → 4493 [TX014] Transfer $804: B=4493 → 3689, A=3707 → 4511 [TX015] Transfer $981: B=3689 → 2708, A=4511 → 5492 [TX016] Transfer $807: A=5492 → 4685, B=2708 → 3515 [TX017] Transfer $558: A=4685 → 4127, B=3515 → 4073 [TX018] Transfer $359: B=4073 → 3714, A=4127 → 4486 [TX019] Transfer $681: A=4486 → 3805, B=3714 → 4395 [TX020] Transfer $371: B=4395 → 4024, A=3805 → 4176 [TX021] Transfer $975: B=4024 → 3049, A=4176 → 5151 [TX022] Transfer $3053: B=3049 → -4, A=5151 → 8204 [TX023] Balance check: B=-4 [TX024] Transfer $983: A=8204 → 7221, B=-4 → 979 [TX025] Transfer $392: A=7221 → 6829, B=979 → 1371 [TX026] Transfer $264: A=6829 → 6565, B=1371 → 1635 [TX027] Transfer $935: B=1635 → 700, A=6565 → 7500 [TX028] Transfer $500: B=700 → 200, A=7500 → 8000 [TX029] Transfer $921: A=8000 → 7079, B=200 → 1121 [TX030] Transfer $528: A=7079 → 6551, B=1121 → 1649 [TX031] Transfer $173: A=6551 → 6378, B=1649 → 1822 [TX032] Transfer $217: A=6378 → 6161, B=1822 → 2039 [TX033] Transfer $857: A=6161 → 5304, B=2039 → 2896 [TX034] Transfer $552: A=5304 → 4752, B=2896 → 3448 [TX035] Transfer $766: B=3448 → 2682, A=4752 → 5518 [TX036] Transfer $472: A=5518 → 5046, B=2682 → 3154 [TX037] Transfer $91: B=3154 → 3063, A=5046 → 5137 [TX038] Transfer $184: A=5137 → 4953, B=3063 → 3247 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	TX022	Account balance goes negative	NEGATIVE_BAL	38	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX022", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 38}
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 $427: A=4000 → 3573, B=4200 → 4627 [TX002] Transfer $210: B=4627 → 4417, A=3573 → 3783 [TX003] Transfer $322: B=4417 → 4095, A=3783 → 4107 [TX004] Transfer $135: B=4095 → 3960, A=4105 → 4240 [TX005] Transfer $328: B=3960 → 3632, A=4240 → 4568 [TX006] Transfer $127: A=4568 → 4441, B=3632 → 3759 [TX007] Transfer $255: B=3759 → 3504, A=4441 → 4696 [TX008] Transfer $53: A=4696 → 4643, B=3504 → 3557 [TX009] Transfer $886: B=3557 → 2671, A=4643 → 5529 [TX010] Transfer $987: B=2671 → 1684, A=5529 → 6516 [TX011] Transfer $958: A=6516 → 5558, B=1684 → 2642 [TX012] Transfer $783: B=2642 → 1859, A=5558 → 6341 [TX013] Transfer $529: A=6341 → 5812, B=1859 → 2388 [TX014] Transfer $902: B=2388 → 1486, A=5812 → 6714 [TX015] Transfer $25: B=1486 → 1461, A=6714 → 6739 [TX016] Transfer $519: A=6739 → 6220, B=1461 → 1980 [TX017] Transfer $222: B=1980 → 1758, A=6220 → 6442 [TX018] Transfer $53: B=1758 → 1705, A=6442 → 6495 [TX019] Transfer $613: B=1705 → 1092, A=6495 → 7108 [TX020] Transfer $551: B=1092 → 541, A=7108 → 7659 [TX021] Transfer $443: A=7659 → 7216, B=541 → 984 [TX022] Transfer $746: A=7216 → 6470, B=984 → 1730 [TX023] Transfer $376: B=1730 → 1354, A=6470 → 6846 [TX024] Transfer $54: A=6846 → 6792, B=1354 → 1408 [TX025] Transfer $568: A=6792 → 6224, B=1408 → 1976 [TX026] Transfer $397: B=1976 → 1579, A=6224 → 6621 [TX027] Transfer $847: B=1579 → 732, A=6621 → 7468 [TX028] Transfer $1000: A=7468 → 6468, B=732 → 1732 [TX029] Transfer $384: A=6468 → 6084, B=1732 → 2116 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	TX003	Mathematical calculation is incorrect	CALC_ERROR	29	{"bug_type": "CALC_ERROR", "bug_location": "TX003", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 29}
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 $571: B=4200 → 3629, A=4000 → 4571 [TX002] Transfer $206: B=3629 → 3423, A=4571 → 4777 [TX003] Transfer $298: A=4777 → 4479, B=3423 → 3721 [TX004] Transfer $844: B=3721 → 2877, A=4479 → 5323 [TX005] Transfer $507: B=2877 → 2370, A=5323 → 5830 [TX006] Transfer $29: B=2370 → 2341, A=5830 → 5859 [TX007] Transfer $270: A=5859 → 5589, B=2341 → 2611 [TX008] Transfer $129: B=2611 → 2482, A=5589 → 5718 [TX009] Thread T1: READ B=2482 [TX010] Thread T2: READ B=2482 [TX011] Thread T1: COMMIT B=2482 → 2326 [TX012] Thread T2: COMMIT B=2482 → 2387 [TX013] Transfer $31: B=2387 → 2356, A=5718 → 5749 [TX014] Transfer $506: A=5749 → 5243, B=2356 → 2862 [TX015] Transfer $597: A=5243 → 4646, B=2862 → 3459 [TX016] Transfer $891: B=3459 → 2568, A=4646 → 5537 [TX017] Transfer $999: B=2568 → 1569, A=5537 → 6536 [TX018] Transfer $526: A=6536 → 6010, B=1569 → 2095 [TX019] Transfer $168: A=6010 → 5842, B=2095 → 2263 [TX020] Transfer $329: A=5842 → 5513, B=2263 → 2592 [TX021] Transfer $367: B=2592 → 2225, A=5513 → 5880 [TX022] Transfer $281: A=5880 → 5599, B=2225 → 2506 [TX023] Transfer $653: B=2506 → 1853, A=5599 → 6252 [TX024] Transfer $298: B=1853 → 1555, A=6252 → 6550 [TX025] Transfer $528: B=1555 → 1027, A=6550 → 7078 [TX026] Transfer $785: A=7078 → 6293, B=1027 → 1812 [TX027] Transfer $558: A=6293 → 5735, B=1812 → 2370 [TX028] Transfer $848: B=2370 → 1522, A=5735 → 6583 [TX029] Transfer $703: B=1522 → 819, A=6583 → 7286 [TX030] Transfer $549: B=819 → 270, A=7286 → 7835 [TX031] Transfer $5: B=270 → 265, A=7835 → 7840 [TX032] Transfer $383: A=7840 → 7457, B=265 → 648 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	TX012	Thread T2 overwrites T1's change	LOST_UPDATE	32	{"bug_type": "LOST_UPDATE", "bug_location": "TX012", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 32}
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 $412: B=4200 → 3788, A=4000 → 4412 [TX002] Transfer $376: A=4412 → 4036, B=3788 → 4164 [TX003] Transfer $863: B=4164 → 3301, A=4036 → 4899 [TX004] Transfer $665: B=3301 → 2636, A=4899 → 5564 [TX005] Transfer $569: A=5564 → 4995, B=2636 → 3205 [TX006] Transfer $678: A=4995 → 4317, B=3205 → 3883 [TX007] Transfer $714: A=4317 → 3603, B=3883 → 4597 [TX008] Transfer $647: B=4597 → 3950, A=3603 → 4250 [TX009] Transfer $88: B=3950 → 3862, A=4250 → 4338 [TX010] Transfer $145: B=3862 → 3717, A=4338 → 4483 [TX011] Transfer $27: A=4483 → 4456, B=3717 → 3744 [TX012] Transfer $400: A=4456 → 4056, B=3744 → 4144 [TX013] Transfer $513: A=4056 → 3543, B=4144 → 4657 [TX014] Transfer $39: B=4657 → 4618, A=3543 → 3582 [TX015] Transfer $347: B=4618 → 4271, A=3582 → 3929 [TX016] Transfer $123: A=3929 → 3806, B=4271 → 4394 [TX017] Transfer $964: A=3806 → 2842, B=4394 → 5358 [TX018] Transfer $949: A=2842 → 1893, B=5358 → 6307 [TX019] Transfer $755: A=1893 → 1138, B=6307 → 7062 [TX020] Transfer $671: A=1138 → 467, B=7062 → 7733 [TX021] Transfer $318: A=467 → 149, B=7733 → 8051 [TX022] Transfer $46: A=149 → 103, B=8051 → 8097 [TX023] Thread T1: READ A=103 [TX024] Thread T2: READ A=103 [TX025] Thread T1: COMMIT A=103 → 78 [TX026] Thread T2: COMMIT A=103 → 78 [TX027] Balance check: A=78 [TX028] Balance check: A=78 [TX029] Balance check: A=78 [TX030] Balance check: A=78 [TX031] Balance check: A=78 [TX032] Transfer $66: B=8097 → 8031, A=78 → 144 [TX033] Transfer $23: A=144 → 121, B=8031 → 8054 [TX034] Transfer $125: B=8054 → 7929, A=121 → 246 [TX035] Transfer $56: A=246 → 190, B=7929 → 7985 [TX036] Transfer $44: A=190 → 146, B=7985 → 8029 [TX037] Transfer $19: A=146 → 127, B=8029 → 8048 [TX038] Transfer $7: A=127 → 120, B=8048 → 8055 [TX039] Transfer $451: B=8055 → 7604, A=120 → 571 [TX040] Transfer $70: A=571 → 501, B=7604 → 7674 [TX041] Transfer $400: A=501 → 101, B=7674 → 8074 [TX042] Balance check: A=101 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	TX026	Thread T2 overwrites T1's change	LOST_UPDATE	42	{"bug_type": "LOST_UPDATE", "bug_location": "TX026", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 42}
60	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 $226: B=4200 → 3974, A=4000 → 4226 [TX002] Transfer $199: B=3974 → 3775, A=4226 → 4425 [TX003] Transfer $636: A=4425 → 3789, B=3775 → 4411 [TX004] Transfer $963: A=3789 → 2826, B=4411 → 5374 [TX005] Transfer $727: A=2826 → 2099, B=5374 → 6101 [TX006] Transfer $878: A=2099 → 1221, B=6101 → 6979 [TX007] Transfer $674: A=1221 → 547, B=6979 → 7653 [TX008] Transfer $358: A=547 → 189, B=7653 → 8011 [TX009] Transfer $39: A=189 → 150, B=8011 → 8050 [TX010] Transfer $656: B=8050 → 7394, A=150 → 806 [TX011] Transfer $789: B=7394 → 6605, A=806 → 1595 [TX012] Transfer $265: B=6605 → 6340, A=1595 → 1860 [TX013] Transfer $285: A=1860 → 1575, B=6340 → 6625 [TX014] Transfer $399: A=1575 → 1176, B=6625 → 7024 [TX015] Transfer $266: B=7024 → 6758, A=1176 → 1442 [TX016] Transfer $453: B=6758 → 6305, A=1442 → 1895 [TX017] Transfer $952: A=1895 → 943, B=6305 → 7257 [TX018] Transfer $184: A=943 → 759, B=7257 → 7441 [TX019] Transfer $149: B=7441 → 7292, A=759 → 908 [TX020] Transfer $630: B=7292 → 6662, A=908 → 1538 [TX021] Transfer $734: A=1538 → 804, B=6662 → 7396 [TX022] Thread T1: READ B=7396 [TX023] Thread T2: READ B=7396 [TX024] Thread T1: COMMIT B=7396 → 7320 [TX025] Thread T2: COMMIT B=7396 → 7338 [TX026] Transfer $587: A=804 → 217, B=7338 → 7925 [TX027] Transfer $21: B=7925 → 7904, A=217 → 238 [TX028] Transfer $670: B=7904 → 7234, A=238 → 908 [TX029] Transfer $682: A=908 → 226, B=7234 → 7916 [TX030] Transfer $157: B=7916 → 7759, A=226 → 383 [TX031] Transfer $590: B=7759 → 7169, A=383 → 973 [TX032] Transfer $491: A=973 → 482, B=7169 → 7660 [TX033] Transfer $866: B=7660 → 6794, A=482 → 1348 [TX034] Transfer $5: A=1348 → 1343, B=6794 → 6799 [TX035] Transfer $126: B=6799 → 6673, A=1343 → 1469 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	TX025	Thread T2 overwrites T1's change	LOST_UPDATE	35	{"bug_type": "LOST_UPDATE", "bug_location": "TX025", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 35}
7	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 $854: B=4200 → 3346, A=4000 → 4854 [TX002] Transfer $234: A=4854 → 4620, B=3346 → 3580 [TX003] Transfer $311: B=3580 → 3269, A=4620 → 4931 [TX004] Transfer $282: A=4931 → 4649, B=3269 → 3551 [TX005] Transfer $568: A=4649 → 4081, B=3551 → 4119 [TX006] Transfer $655: B=4119 → 3464, A=4081 → 4736 [TX007] Transfer $895: B=3464 → 2569, A=4736 → 5631 [TX008] Transfer $482: A=5631 → 5149, B=2569 → 3051 [TX009] Transfer $350: B=3051 → 2701, A=5149 → 5499 [TX010] Transfer $260: A=5499 → 5239, B=2701 → 2961 [TX011] Transfer $843: B=2961 → 2118, A=5239 → 6082 [TX012] Transfer $505: A=6082 → 5577, B=2118 → 2623 [TX013] Transfer $157: A=5577 → 5420, B=2623 → 2780 [TX014] Transfer $89: A=5420 → 5331, B=2780 → 2869 [TX015] Transfer $573: A=5331 → 4758, B=2869 → 3442 [TX016] Transfer $796: B=3442 → 2646, A=4758 → 5554 [TX017] Payment PAY1002: Transfer $932: B=2646 → 1714, A=5554 → 6486 [TX018] Transfer $882: B=1714 → 832, A=6486 → 7368 [TX019] Transfer $584: B=832 → 248, A=7368 → 7952 [TX020] Transfer $972: A=7952 → 6980, B=248 → 1220 [TX021] Transfer $272: A=6980 → 6708, B=1220 → 1492 [TX022] Transfer $247: A=6708 → 6461, B=1492 → 1739 [TX023] Transfer $162: A=6461 → 6299, B=1739 → 1901 [TX024] Transfer $463: A=6299 → 5836, B=1901 → 2364 [TX025] Transfer $35: B=2364 → 2329, A=5836 → 5871 [TX026] Transfer $725: A=5871 → 5146, B=2329 → 3054 [TX027] Transfer $74: B=3054 → 2980, A=5146 → 5220 [TX028] Transfer $808: A=5220 → 4412, B=2980 → 3788 [TX029] Transfer $119: A=4412 → 4293, B=3788 → 3907 [TX030] Transfer $932: A=4293 → 3361, B=3907 → 4839 [TX031] Transfer $75: B=4839 → 4764, A=3361 → 3436 [TX032] Transfer $813: A=3436 → 2623, B=4764 → 5577 [TX033] Transfer $451: B=5577 → 5126, A=2623 → 3074 [TX034] Transfer $707: A=3074 → 2367, B=5126 → 5833 [TX035] Transfer $967: B=5833 → 4866, A=2367 → 3334 [TX036] Transfer $450: B=4866 → 4416, A=3334 → 3784 [TX037] Payment PAY1002: Transfer $932: B=4416 → 3484, A=3784 → 4716 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	TX037	Payment PAY1002 processed twice	DUPLICATE_TXN	37	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX037", "explanation": "Payment PAY1002 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 37}
34	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 $317: B=4200 → 3883, A=4000 → 4317 [TX002] Transfer $502: B=3883 → 3381, A=4317 → 4819 [TX003] Transfer $659: B=3381 → 2722, A=4819 → 5478 [TX004] Transfer $381: B=2722 → 2341, A=5478 → 5859 [TX005] Transfer $193: B=2341 → 2148, A=5859 → 6052 [TX006] Transfer $271: B=2148 → 1877, A=6052 → 6323 [TX007] Transfer $1886: B=1877 → -9, A=6323 → 8209 [TX008] Transfer $579: A=8209 → 7630, B=-9 → 570 [TX009] Transfer $772: A=7630 → 6858, B=570 → 1342 [TX010] Transfer $686: A=6858 → 6172, B=1342 → 2028 [TX011] Transfer $996: B=2028 → 1032, A=6172 → 7168 [TX012] Transfer $862: A=7168 → 6306, B=1032 → 1894 [TX013] Transfer $990: B=1894 → 904, A=6306 → 7296 [TX014] Transfer $489: B=904 → 415, A=7296 → 7785 [TX015] Transfer $204: B=415 → 211, A=7785 → 7989 [TX016] Transfer $125: A=7989 → 7864, B=211 → 336 [TX017] Transfer $44: B=336 → 292, A=7864 → 7908 [TX018] Transfer $131: A=7908 → 7777, B=292 → 423 [TX019] Transfer $82: A=7777 → 7695, B=423 → 505 [TX020] Transfer $323: B=505 → 182, A=7695 → 8018 [TX021] Transfer $329: A=8018 → 7689, B=182 → 511 [TX022] Transfer $399: A=7689 → 7290, B=511 → 910 [TX023] Transfer $284: B=910 → 626, A=7290 → 7574 [TX024] Transfer $431: B=626 → 195, A=7574 → 8005 [TX025] Transfer $155: A=8005 → 7850, B=195 → 350 [TX026] Transfer $949: A=7850 → 6901, B=350 → 1299 [TX027] Transfer $806: A=6901 → 6095, B=1299 → 2105 [TX028] Transfer $900: B=2105 → 1205, A=6095 → 6995 [TX029] Transfer $394: B=1205 → 811, A=6995 → 7389 [TX030] Transfer $40: B=811 → 771, A=7389 → 7429 [TX031] Transfer $414: A=7429 → 7015, B=771 → 1185 [TX032] Transfer $41: A=7015 → 6974, B=1185 → 1226 [TX033] Transfer $709: B=1226 → 517, A=6974 → 7683 [TX034] Transfer $765: A=7683 → 6918, B=517 → 1282 [TX035] Transfer $920: B=1282 → 362, A=6918 → 7838 [TX036] Transfer $174: B=362 → 188, A=7838 → 8012 [TX037] Transfer $37: B=188 → 151, A=8012 → 8049 [TX038] Transfer $16: B=151 → 135, A=8049 → 8065 [TX039] Transfer $999: A=8065 → 7066, B=135 → 1134 [TX040] Transfer $277: B=1134 → 857, A=7066 → 7343 [TX041] Transfer $194: B=857 → 663, A=7343 → 7537 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	TX007	Account balance goes negative	NEGATIVE_BAL	41	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX007", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 41}
99	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 $201: B=4200 → 3999, A=4000 → 4201 [TX002] Transfer $108: B=3999 → 3891, A=4201 → 4309 [TX003] Transfer $619: A=4309 → 3690, B=3891 → 4510 [TX004] Transfer $247: B=4510 → 4263, A=3690 → 3937 [TX005] Transfer $556: B=4263 → 3707, A=3937 → 4493 [TX006] Transfer $218: A=4493 → 4275, B=3707 → 3925 [TX007] Transfer $194: A=4275 → 4081, B=3925 → 4119 [TX008] Transfer $248: A=4081 → 3833, B=4119 → 4367 [TX009] Transfer $585: B=4367 → 3782, A=3833 → 4418 [TX010] Transfer $48: A=4418 → 4370, B=3782 → 3830 [TX011] Transfer $97: A=4370 → 4273, B=3830 → 3927 [TX012] Transfer $367: B=3927 → 3560, A=4273 → 4640 [TX013] Transfer $514: B=3560 → 3046, A=4640 → 5154 [TX014] Transfer $771: A=5154 → 4383, B=3046 → 3817 [TX015] Transfer $999: B=3817 → 2818, A=4383 → 5382 [TX016] Transfer $341: A=5382 → 5041, B=2818 → 3159 [TX017] Transfer $516: B=3159 → 2643, A=5041 → 5557 [TX018] Transfer $603: A=5557 → 4954, B=2643 → 3246 [TX019] Transfer $602: B=3246 → 2644, A=4954 → 5556 [TX020] Transfer $167: A=5556 → 5389, B=2644 → 2811 [TX021] Transfer $82: A=5389 → 5307, B=2811 → 2893 [TX022] Transfer $907: A=5307 → 4400, B=2893 → 3800 [TX023] Transfer $789: A=4400 → 3611, B=3800 → 4589 [TX024] Transfer $460: A=3611 → 3151, B=4589 → 5049 [TX025] Transfer $299: A=3151 → 2852, B=5049 → 5348 [TX026] Transfer $42: B=5348 → 5306, A=2852 → 2894 [TX027] Transfer $215: B=5306 → 5091, A=2894 → 3110 [TX028] Transfer $101: A=3109 → 3008, B=5091 → 5192 [TX029] Transfer $786: A=3008 → 2222, B=5192 → 5978 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	TX027	Mathematical calculation is incorrect	CALC_ERROR	29	{"bug_type": "CALC_ERROR", "bug_location": "TX027", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 29}
46	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 $277: B=4200 → 3923, A=4000 → 4277 [TX002] Transfer $376: B=3923 → 3547, A=4277 → 4653 [TX003] Transfer $436: A=4653 → 4217, B=3547 → 3983 [TX004] Transfer $719: A=4217 → 3498, B=3983 → 4702 [TX005] Transfer $876: B=4702 → 3826, A=3498 → 4374 [TX006] Payment PAY1010: Transfer $463: B=3826 → 3363, A=4374 → 4837 [TX007] Transfer $591: A=4837 → 4246, B=3363 → 3954 [TX008] Transfer $740: A=4246 → 3506, B=3954 → 4694 [TX009] Transfer $570: B=4694 → 4124, A=3506 → 4076 [TX010] Transfer $202: B=4124 → 3922, A=4076 → 4278 [TX011] Transfer $486: A=4278 → 3792, B=3922 → 4408 [TX012] Transfer $433: A=3792 → 3359, B=4408 → 4841 [TX013] Transfer $916: B=4841 → 3925, A=3359 → 4275 [TX014] Transfer $309: B=3925 → 3616, A=4275 → 4584 [TX015] Transfer $409: B=3616 → 3207, A=4584 → 4993 [TX016] Transfer $63: A=4993 → 4930, B=3207 → 3270 [TX017] Transfer $489: A=4930 → 4441, B=3270 → 3759 [TX018] Transfer $764: A=4441 → 3677, B=3759 → 4523 [TX019] Transfer $371: B=4523 → 4152, A=3677 → 4048 [TX020] Transfer $354: B=4152 → 3798, A=4048 → 4402 [TX021] Transfer $126: A=4402 → 4276, B=3798 → 3924 [TX022] Transfer $592: B=3924 → 3332, A=4276 → 4868 [TX023] Transfer $365: A=4868 → 4503, B=3332 → 3697 [TX024] Payment PAY1010: Transfer $463: B=3697 → 3234, A=4503 → 4966 [TX025] Transfer $795: B=3234 → 2439, A=4966 → 5761 [TX026] Transfer $392: B=2439 → 2047, A=5761 → 6153 [TX027] Transfer $648: B=2047 → 1399, A=6153 → 6801 [TX028] Transfer $657: A=6801 → 6144, B=1399 → 2056 [TX029] Transfer $648: B=2056 → 1408, A=6144 → 6792 [TX030] Transfer $83: B=1408 → 1325, A=6792 → 6875 [TX031] Transfer $235: A=6875 → 6640, B=1325 → 1560 [TX032] Transfer $670: B=1560 → 890, A=6640 → 7310 [TX033] Transfer $621: B=890 → 269, A=7310 → 7931 [TX034] Transfer $115: B=269 → 154, A=7931 → 8046 [TX035] Transfer $28: B=154 → 126, A=8046 → 8074 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	TX024	Payment PAY1010 processed twice	DUPLICATE_TXN	35	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX024", "explanation": "Payment PAY1010 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 35}
2	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 $805: B=4200 → 3395, A=4000 → 4805 [TX002] Transfer $196: B=3395 → 3199, A=4805 → 5001 [TX003] Transfer $676: A=5001 → 4325, B=3199 → 3875 [TX004] Transfer $435: B=3875 → 3440, A=4325 → 4760 [TX005] Transfer $886: B=3440 → 2554, A=4760 → 5646 [TX006] Transfer $64: A=5646 → 5582, B=2554 → 2618 [TX007] Transfer $821: B=2618 → 1797, A=5582 → 6403 [TX008] Transfer $198: A=6403 → 6205, B=1797 → 1995 [TX009] Transfer $145: A=6205 → 6060, B=1995 → 2140 [TX010] Transfer $287: B=2140 → 1853, A=6060 → 6345 [TX011] Transfer $455: A=6347 → 5892, B=1853 → 2308 [TX012] Transfer $669: A=5892 → 5223, B=2308 → 2977 [TX013] Transfer $950: A=5223 → 4273, B=2977 → 3927 [TX014] Transfer $418: A=4273 → 3855, B=3927 → 4345 [TX015] Transfer $220: B=4345 → 4125, A=3855 → 4075 [TX016] Transfer $170: B=4125 → 3955, A=4075 → 4245 [TX017] Transfer $401: B=3955 → 3554, A=4245 → 4646 [TX018] Transfer $294: B=3554 → 3260, A=4646 → 4940 [TX019] Transfer $160: B=3260 → 3100, A=4940 → 5100 [TX020] Transfer $224: A=5100 → 4876, B=3100 → 3324 [TX021] Transfer $767: A=4876 → 4109, B=3324 → 4091 [TX022] Transfer $53: B=4091 → 4038, A=4109 → 4162 [TX023] Transfer $60: B=4038 → 3978, A=4162 → 4222 [TX024] Transfer $72: A=4222 → 4150, B=3978 → 4050 [TX025] Transfer $415: A=4150 → 3735, B=4050 → 4465 [TX026] Transfer $594: A=3735 → 3141, B=4465 → 5059 [TX027] Transfer $431: A=3141 → 2710, B=5059 → 5490 [TX028] Transfer $211: B=5490 → 5279, A=2710 → 2921 [TX029] Transfer $273: B=5279 → 5006, A=2921 → 3194 [TX030] Transfer $689: B=5006 → 4317, A=3194 → 3883 [TX031] Transfer $325: B=4317 → 3992, A=3883 → 4208 [TX032] Transfer $471: A=4208 → 3737, B=3992 → 4463 [TX033] Transfer $552: A=3737 → 3185, B=4463 → 5015 [TX034] Transfer $137: A=3185 → 3048, B=5015 → 5152 [TX035] Transfer $902: B=5152 → 4250, A=3048 → 3950 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	TX010	Mathematical calculation is incorrect	CALC_ERROR	35	{"bug_type": "CALC_ERROR", "bug_location": "TX010", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 35}
51	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 $651: A=4000 → 3349, B=4200 → 4851 [TX002] Transfer $314: B=4851 → 4537, A=3349 → 3663 [TX003] Transfer $554: A=3663 → 3109, B=4537 → 5091 [TX004] Transfer $516: A=3109 → 2593, B=5091 → 5607 [TX005] Transfer $53: A=2593 → 2540, B=5607 → 5660 [TX006] Transfer $772: B=5660 → 4888, A=2540 → 3312 [TX007] Transfer $444: A=3312 → 2868, B=4888 → 5332 [TX008] Transfer $153: B=5332 → 5179, A=2868 → 3021 [TX009] Transfer $3024: A=3021 → -3, B=5179 → 8203 [TX010] Transfer $563: B=8203 → 7640, A=-3 → 560 [TX011] Transfer $89: B=7640 → 7551, A=560 → 649 [TX012] Transfer $794: B=7551 → 6757, A=649 → 1443 [TX013] Transfer $494: A=1443 → 949, B=6757 → 7251 [TX014] Transfer $406: A=949 → 543, B=7251 → 7657 [TX015] Transfer $126: A=543 → 417, B=7657 → 7783 [TX016] Transfer $222: A=417 → 195, B=7783 → 8005 [TX017] Transfer $117: B=8005 → 7888, A=195 → 312 [TX018] Transfer $376: B=7888 → 7512, A=312 → 688 [TX019] Transfer $330: B=7512 → 7182, A=688 → 1018 [TX020] Transfer $790: B=7182 → 6392, A=1018 → 1808 [TX021] Transfer $360: B=6392 → 6032, A=1808 → 2168 [TX022] Transfer $453: B=6032 → 5579, A=2168 → 2621 [TX023] Transfer $206: A=2621 → 2415, B=5579 → 5785 [TX024] Transfer $777: B=5785 → 5008, A=2415 → 3192 [TX025] Transfer $759: A=3192 → 2433, B=5008 → 5767 [TX026] Transfer $973: A=2433 → 1460, B=5767 → 6740 [TX027] Transfer $16: A=1460 → 1444, B=6740 → 6756 [TX028] Transfer $314: B=6756 → 6442, A=1444 → 1758 [TX029] Transfer $25: B=6442 → 6417, A=1758 → 1783 [TX030] Transfer $759: B=6417 → 5658, A=1783 → 2542 [TX031] Transfer $561: A=2542 → 1981, B=5658 → 6219 [TX032] Transfer $639: B=6219 → 5580, A=1981 → 2620 [TX033] Transfer $387: A=2620 → 2233, B=5580 → 5967 [TX034] Transfer $176: A=2233 → 2057, B=5967 → 6143 [TX035] Transfer $207: A=2057 → 1850, B=6143 → 6350 [TX036] Transfer $478: B=6350 → 5872, A=1850 → 2328 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	36	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX009", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 36}
16	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 $896: A=4000 → 3104, B=4200 → 5096 [TX002] Transfer $652: B=5096 → 4444, A=3104 → 3756 [TX003] Transfer $261: B=4444 → 4183, A=3756 → 4017 [TX004] Transfer $809: A=4017 → 3208, B=4183 → 4992 [TX005] Transfer $248: A=3208 → 2960, B=4992 → 5240 [TX006] Transfer $138: A=2960 → 2822, B=5240 → 5378 [TX007] Transfer $561: A=2822 → 2261, B=5378 → 5939 [TX008] Transfer $852: B=5939 → 5087, A=2261 → 3113 [TX009] Transfer $648: B=5087 → 4439, A=3113 → 3761 [TX010] Transfer $66: A=3761 → 3695, B=4439 → 4505 [TX011] Transfer $302: B=4505 → 4203, A=3695 → 3997 [TX012] Transfer $812: A=3997 → 3185, B=4203 → 5015 [TX013] Transfer $325: A=3185 → 2860, B=5015 → 5340 [TX014] Transfer $836: B=5340 → 4504, A=2860 → 3696 [TX015] Transfer $39: B=4504 → 4465, A=3696 → 3735 [TX016] Transfer $367: A=3735 → 3368, B=4465 → 4832 [TX017] Transfer $281: A=3368 → 3087, B=4832 → 5113 [TX018] Transfer $449: A=3087 → 2638, B=5113 → 5562 [TX019] Transfer $918: B=5562 → 4644, A=2638 → 3556 [TX020] Transfer $999: B=4644 → 3645, A=3556 → 4555 [TX021] Transfer $710: A=4555 → 3845, B=3645 → 4355 [TX022] Transfer $948: B=4355 → 3407, A=3845 → 4793 [TX023] Transfer $746: B=3407 → 2661, A=4793 → 5539 [TX024] Transfer $442: B=2661 → 2219, A=5539 → 5981 [TX025] Transfer $330: A=5981 → 5651, B=2219 → 2549 [TX026] Transfer $337: A=5651 → 5314, B=2549 → 2886 [TX027] Transfer $458: B=2886 → 2428, A=5314 → 5772 [TX028] Transfer $708: B=2428 → 1720, A=5772 → 6480 [TX029] Transfer $459: B=1720 → 1261, A=6480 → 6939 [TX030] Transfer $631: A=6939 → 6308, B=1261 → 1892 [TX031] Transfer $656: B=1892 → 1236, A=6308 → 6964 [TX032] Transfer $689: A=6964 → 6275, B=1236 → 1925 [TX033] Thread T1: READ B=1925 [TX034] Thread T2: READ B=1925 [TX035] Thread T1: COMMIT B=1925 → 1782 [TX036] Thread T2: COMMIT B=1925 → 1744 [TX037] Transfer $148: A=6275 → 6127, B=1744 → 1892 [TX038] Transfer $131: B=1892 → 1761, A=6127 → 6258 [TX039] Transfer $799: A=6258 → 5459, B=1761 → 2560 [TX040] Transfer $394: B=2560 → 2166, A=5459 → 5853 [TX041] Transfer $697: A=5853 → 5156, B=2166 → 2863 [TX042] Transfer $382: B=2863 → 2481, A=5156 → 5538 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	TX036	Thread T2 overwrites T1's change	LOST_UPDATE	42	{"bug_type": "LOST_UPDATE", "bug_location": "TX036", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 42}
38	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 $836: A=4000 → 3164, B=4200 → 5036 [TX002] Transfer $118: B=5036 → 4918, A=3164 → 3282 [TX003] Transfer $987: B=4918 → 3931, A=3282 → 4269 [TX004] Transfer $857: B=3931 → 3074, A=4269 → 5126 [TX005] Transfer $821: B=3074 → 2253, A=5126 → 5947 [TX006] Transfer $117: B=2253 → 2136, A=5947 → 6064 [TX007] Transfer $967: A=6064 → 5097, B=2136 → 3103 [TX008] Transfer $428: A=5097 → 4669, B=3103 → 3531 [TX009] Payment PAY1009: Transfer $187: B=3531 → 3344, A=4669 → 4856 [TX010] Transfer $628: B=3344 → 2716, A=4856 → 5484 [TX011] Transfer $496: A=5484 → 4988, B=2716 → 3212 [TX012] Transfer $910: B=3212 → 2302, A=4988 → 5898 [TX013] Transfer $49: B=2302 → 2253, A=5898 → 5947 [TX014] Transfer $672: A=5947 → 5275, B=2253 → 2925 [TX015] Transfer $723: B=2925 → 2202, A=5275 → 5998 [TX016] Transfer $533: A=5998 → 5465, B=2202 → 2735 [TX017] Transfer $679: A=5465 → 4786, B=2735 → 3414 [TX018] Transfer $356: A=4786 → 4430, B=3414 → 3770 [TX019] Transfer $861: B=3770 → 2909, A=4430 → 5291 [TX020] Transfer $660: A=5291 → 4631, B=2909 → 3569 [TX021] Transfer $874: A=4631 → 3757, B=3569 → 4443 [TX022] Transfer $78: B=4443 → 4365, A=3757 → 3835 [TX023] Transfer $248: B=4365 → 4117, A=3835 → 4083 [TX024] Transfer $53: B=4117 → 4064, A=4083 → 4136 [TX025] Transfer $414: A=4136 → 3722, B=4064 → 4478 [TX026] Transfer $472: A=3722 → 3250, B=4478 → 4950 [TX027] Transfer $92: B=4950 → 4858, A=3250 → 3342 [TX028] Transfer $325: B=4858 → 4533, A=3342 → 3667 [TX029] Transfer $765: A=3667 → 2902, B=4533 → 5298 [TX030] Transfer $415: A=2902 → 2487, B=5298 → 5713 [TX031] Transfer $572: B=5713 → 5141, A=2487 → 3059 [TX032] Transfer $812: A=3059 → 2247, B=5141 → 5953 [TX033] Payment PAY1009: Transfer $187: B=5953 → 5766, A=2247 → 2434 [TX034] Transfer $672: B=5766 → 5094, A=2434 → 3106 [TX035] Transfer $374: B=5094 → 4720, A=3106 → 3480 [TX036] Transfer $866: A=3480 → 2614, B=4720 → 5586 [TX037] Transfer $575: B=5586 → 5011, A=2614 → 3189 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	TX033	Payment PAY1009 processed twice	DUPLICATE_TXN	37	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX033", "explanation": "Payment PAY1009 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 37}
58	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 $560: B=3783 → 3223, A=4417 → 4977 [TX003] Transfer $488: A=4977 → 4489, B=3223 → 3711 [TX004] Transfer $570: A=4489 → 3919, B=3711 → 4281 [TX005] Transfer $862: B=4281 → 3419, A=3919 → 4781 [TX006] Transfer $297: B=3419 → 3122, A=4781 → 5078 [TX007] Transfer $13: A=5078 → 5065, B=3122 → 3135 [TX008] Transfer $149: A=5065 → 4916, B=3135 → 3284 [TX009] Transfer $1000: B=3284 → 2284, A=4916 → 5916 [TX010] Transfer $142: A=5916 → 5774, B=2284 → 2426 [TX011] Transfer $917: B=2426 → 1509, A=5774 → 6691 [TX012] Transfer $467: B=1509 → 1042, A=6691 → 7158 [TX013] Thread T1: READ B=1042 [TX014] Thread T2: READ B=1042 [TX015] Thread T1: COMMIT B=1042 → 851 [TX016] Thread T2: COMMIT B=1042 → 877 [TX017] Transfer $233: B=877 → 644, A=7158 → 7391 [TX018] Transfer $621: A=7391 → 6770, B=644 → 1265 [TX019] Transfer $869: A=6770 → 5901, B=1265 → 2134 [TX020] Transfer $422: A=5901 → 5479, B=2134 → 2556 [TX021] Transfer $40: B=2556 → 2516, A=5479 → 5519 [TX022] Transfer $117: B=2516 → 2399, A=5519 → 5636 [TX023] Transfer $147: B=2399 → 2252, A=5636 → 5783 [TX024] Transfer $531: B=2252 → 1721, A=5783 → 6314 [TX025] Transfer $253: A=6314 → 6061, B=1721 → 1974 [TX026] Transfer $702: B=1974 → 1272, A=6061 → 6763 [TX027] Transfer $927: B=1272 → 345, A=6763 → 7690 [TX028] Transfer $122: B=345 → 223, A=7690 → 7812 [TX029] Transfer $75: B=223 → 148, A=7812 → 7887 [TX030] Transfer $24: B=148 → 124, A=7887 → 7911 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	30	{"bug_type": "LOST_UPDATE", "bug_location": "TX016", "explanation": "Thread T2 overwrites T1's change"}	{"bug_type": "LOST_UPDATE", "n_ops": 30}
68	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 $6761: A=6760 → -1, B=1440 → 8201 [TX022] Balance check: A=-1 [TX023] Transfer $312: B=8201 → 7889, A=-1 → 311 [TX024] Transfer $171: A=311 → 140, B=7889 → 8060 [TX025] Transfer $208: B=8060 → 7852, A=140 → 348 [TX026] Transfer $504: B=7852 → 7348, A=348 → 852 [TX027] Transfer $830: B=7348 → 6518, A=852 → 1682 [TX028] Transfer $442: A=1682 → 1240, B=6518 → 6960 [TX029] Transfer $462: A=1240 → 778, B=6960 → 7422 [TX030] Transfer $455: B=7422 → 6967, A=778 → 1233 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	TX021	Account balance goes negative	NEGATIVE_BAL	30	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX021", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 30}
22	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 $958: A=4000 → 3042, B=4200 → 5158 [TX002] Transfer $295: B=5158 → 4863, A=3042 → 3337 [TX003] Transfer $789: B=4863 → 4074, A=3337 → 4126 [TX004] Transfer $385: A=4126 → 3741, B=4074 → 4459 [TX005] Transfer $892: B=4459 → 3567, A=3741 → 4633 [TX006] Transfer $3570: B=3567 → -3, A=4633 → 8203 [TX007] Transfer $123: A=8203 → 8080, B=-3 → 120 [TX008] Transfer $543: A=8080 → 7537, B=120 → 663 [TX009] Transfer $856: A=7537 → 6681, B=663 → 1519 [TX010] Transfer $307: A=6681 → 6374, B=1519 → 1826 [TX011] Transfer $546: B=1826 → 1280, A=6374 → 6920 [TX012] Transfer $255: B=1280 → 1025, A=6920 → 7175 [TX013] Transfer $160: B=1025 → 865, A=7175 → 7335 [TX014] Transfer $744: B=865 → 121, A=7335 → 8079 [TX015] Transfer $830: A=8079 → 7249, B=121 → 951 [TX016] Transfer $248: B=951 → 703, A=7249 → 7497 [TX017] Transfer $105: A=7497 → 7392, B=703 → 808 [TX018] Transfer $614: A=7392 → 6778, B=808 → 1422 [TX019] Transfer $760: A=6778 → 6018, B=1422 → 2182 [TX020] Transfer $451: A=6018 → 5567, B=2182 → 2633 [TX021] Transfer $774: A=5567 → 4793, B=2633 → 3407 [TX022] Transfer $517: A=4793 → 4276, B=3407 → 3924 [TX023] Transfer $837: B=3924 → 3087, A=4276 → 5113 [TX024] Transfer $244: B=3087 → 2843, A=5113 → 5357 [TX025] Transfer $678: B=2843 → 2165, A=5357 → 6035 [TX026] Transfer $309: A=6035 → 5726, B=2165 → 2474 [TX027] Transfer $572: B=2474 → 1902, A=5726 → 6298 [TX028] Transfer $571: A=6298 → 5727, B=1902 → 2473 [TX029] Transfer $997: B=2473 → 1476, A=5727 → 6724 [TX030] Transfer $806: B=1476 → 670, A=6724 → 7530 [TX031] Transfer $420: B=670 → 250, A=7530 → 7950 [TX032] Transfer $387: A=7950 → 7563, B=250 → 637 [TX033] Transfer $248: A=7563 → 7315, B=637 → 885 [TX034] Transfer $880: A=7315 → 6435, B=885 → 1765 [TX035] Transfer $938: A=6435 → 5497, B=1765 → 2703 [TX036] Transfer $993: A=5497 → 4504, B=2703 → 3696 [TX037] Transfer $399: B=3696 → 3297, A=4504 → 4903 [TX038] Transfer $210: A=4903 → 4693, B=3297 → 3507 [TX039] Transfer $946: B=3507 → 2561, A=4693 → 5639 [TX040] Transfer $96: B=2561 → 2465, A=5639 → 5735 [TX041] Transfer $276: A=5735 → 5459, B=2465 → 2741 [TX042] Transfer $896: B=2741 → 1845, A=5459 → 6355 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	TX006	Account balance goes negative	NEGATIVE_BAL	42	{"bug_type": "NEGATIVE_BAL", "bug_location": "TX006", "explanation": "Account balance goes negative"}	{"bug_type": "NEGATIVE_BAL", "n_ops": 42}
62	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 $725: A=4000 → 3275, B=4200 → 4925 [TX002] Transfer $712: B=4925 → 4213, A=3275 → 3985 [TX003] Transfer $148: A=3987 → 3839, B=4213 → 4361 [TX004] Transfer $423: B=4361 → 3938, A=3839 → 4262 [TX005] Transfer $627: A=4262 → 3635, B=3938 → 4565 [TX006] Transfer $736: A=3635 → 2899, B=4565 → 5301 [TX007] Transfer $644: B=5301 → 4657, A=2899 → 3543 [TX008] Transfer $430: B=4657 → 4227, A=3543 → 3973 [TX009] Transfer $198: A=3973 → 3775, B=4227 → 4425 [TX010] Transfer $635: A=3775 → 3140, B=4425 → 5060 [TX011] Transfer $477: B=5060 → 4583, A=3140 → 3617 [TX012] Transfer $56: A=3617 → 3561, B=4583 → 4639 [TX013] Transfer $817: A=3561 → 2744, B=4639 → 5456 [TX014] Transfer $511: A=2744 → 2233, B=5456 → 5967 [TX015] Transfer $688: A=2233 → 1545, B=5967 → 6655 [TX016] Transfer $662: A=1545 → 883, B=6655 → 7317 [TX017] Transfer $216: B=7317 → 7101, A=883 → 1099 [TX018] Transfer $344: B=7101 → 6757, A=1099 → 1443 [TX019] Transfer $108: B=6757 → 6649, A=1443 → 1551 [TX020] Transfer $163: A=1551 → 1388, B=6649 → 6812 [TX021] Transfer $529: A=1388 → 859, B=6812 → 7341 [TX022] Transfer $242: A=859 → 617, B=7341 → 7583 [TX023] Transfer $431: B=7583 → 7152, A=617 → 1048 [TX024] Transfer $237: A=1048 → 811, B=7152 → 7389 [TX025] Transfer $235: A=811 → 576, B=7389 → 7624 [TX026] Transfer $379: A=576 → 197, B=7624 → 8003 [TX027] Transfer $386: B=8003 → 7617, A=197 → 583 [TX028] Transfer $243: A=583 → 340, B=7617 → 7860 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	TX002	Mathematical calculation is incorrect	CALC_ERROR	28	{"bug_type": "CALC_ERROR", "bug_location": "TX002", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 28}
24	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 $237: A=4000 → 3763, B=4200 → 4437 [TX002] Transfer $279: A=3763 → 3484, B=4437 → 4716 [TX003] Transfer $702: A=3484 → 2782, B=4716 → 5418 [TX004] Transfer $185: B=5418 → 5233, A=2782 → 2967 [TX005] Transfer $986: B=5233 → 4247, A=2967 → 3953 [TX006] Transfer $772: A=3953 → 3181, B=4247 → 5019 [TX007] Transfer $308: B=5019 → 4711, A=3181 → 3489 [TX008] Transfer $582: A=3489 → 2907, B=4711 → 5293 [TX009] Transfer $395: B=5293 → 4898, A=2907 → 3302 [TX010] Transfer $514: A=3302 → 2788, B=4898 → 5412 [TX011] Payment PAY1005: Transfer $102: B=5412 → 5310, A=2788 → 2890 [TX012] Transfer $860: B=5310 → 4450, A=2890 → 3750 [TX013] Transfer $621: A=3750 → 3129, B=4450 → 5071 [TX014] Transfer $32: B=5071 → 5039, A=3129 → 3161 [TX015] Transfer $504: B=5039 → 4535, A=3161 → 3665 [TX016] Transfer $568: A=3665 → 3097, B=4535 → 5103 [TX017] Transfer $192: B=5103 → 4911, A=3097 → 3289 [TX018] Transfer $792: B=4911 → 4119, A=3289 → 4081 [TX019] Transfer $732: B=4119 → 3387, A=4081 → 4813 [TX020] Transfer $276: A=4813 → 4537, B=3387 → 3663 [TX021] Transfer $730: A=4537 → 3807, B=3663 → 4393 [TX022] Transfer $326: A=3807 → 3481, B=4393 → 4719 [TX023] Transfer $95: B=4719 → 4624, A=3481 → 3576 [TX024] Transfer $457: A=3576 → 3119, B=4624 → 5081 [TX025] Transfer $106: B=5081 → 4975, A=3119 → 3225 [TX026] Transfer $193: A=3225 → 3032, B=4975 → 5168 [TX027] Transfer $572: B=5168 → 4596, A=3032 → 3604 [TX028] Transfer $28: B=4596 → 4568, A=3604 → 3632 [TX029] Transfer $569: A=3632 → 3063, B=4568 → 5137 [TX030] Payment PAY1005: Transfer $102: B=5137 → 5035, A=3063 → 3165 [TX031] Transfer $886: A=3165 → 2279, B=5035 → 5921 [TX032] Transfer $300: B=5921 → 5621, A=2279 → 2579 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	TX030	Payment PAY1005 processed twice	DUPLICATE_TXN	32	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX030", "explanation": "Payment PAY1005 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 32}
5	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 $283: B=4200 → 3917, A=4000 → 4283 [TX002] Transfer $732: B=3917 → 3185, A=4283 → 5015 [TX003] Transfer $280: B=3185 → 2905, A=5015 → 5295 [TX004] Transfer $916: B=2905 → 1989, A=5295 → 6211 [TX005] Transfer $156: A=6211 → 6055, B=1989 → 2145 [TX006] Transfer $712: A=6055 → 5343, B=2145 → 2857 [TX007] Transfer $67: A=5343 → 5276, B=2857 → 2924 [TX008] Transfer $340: B=2924 → 2584, A=5276 → 5616 [TX009] Transfer $65: B=2584 → 2519, A=5616 → 5681 [TX010] Transfer $400: A=5681 → 5281, B=2519 → 2919 [TX011] Transfer $490: A=5281 → 4791, B=2919 → 3409 [TX012] Transfer $307: A=4791 → 4484, B=3409 → 3716 [TX013] Transfer $553: B=3716 → 3163, A=4484 → 5037 [TX014] Payment PAY1001: Transfer $226: A=5037 → 4811, B=3163 → 3389 [TX015] Transfer $499: B=3389 → 2890, A=4811 → 5310 [TX016] Transfer $346: A=5310 → 4964, B=2890 → 3236 [TX017] Transfer $862: B=3236 → 2374, A=4964 → 5826 [TX018] Transfer $639: B=2374 → 1735, A=5826 → 6465 [TX019] Transfer $608: A=6465 → 5857, B=1735 → 2343 [TX020] Transfer $660: A=5857 → 5197, B=2343 → 3003 [TX021] Transfer $889: B=3003 → 2114, A=5197 → 6086 [TX022] Transfer $53: B=2114 → 2061, A=6086 → 6139 [TX023] Payment PAY1001: Transfer $226: A=6139 → 5913, B=2061 → 2287 [TX024] Transfer $337: B=2287 → 1950, A=5913 → 6250 [TX025] Transfer $336: A=6250 → 5914, B=1950 → 2286 [TX026] Transfer $286: B=2286 → 2000, A=5914 → 6200 [TX027] Transfer $856: B=2000 → 1144, A=6200 → 7056 [TX028] Transfer $21: A=7056 → 7035, B=1144 → 1165 [TX029] Transfer $231: A=7035 → 6804, B=1165 → 1396 [TX030] Transfer $774: A=6804 → 6030, B=1396 → 2170 [TX031] Transfer $206: A=6030 → 5824, B=2170 → 2376 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	TX023	Payment PAY1001 processed twice	DUPLICATE_TXN	31	{"bug_type": "DUPLICATE_TXN", "bug_location": "TX023", "explanation": "Payment PAY1001 processed twice"}	{"bug_type": "DUPLICATE_TXN", "n_ops": 31}
6	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: A=4000 → 3514, B=4200 → 4686 [TX002] Transfer $478: A=3514 → 3036, B=4686 → 5164 [TX003] Transfer $173: B=5164 → 4991, A=3036 → 3209 [TX004] Transfer $989: A=3209 → 2220, B=4991 → 5980 [TX005] Transfer $594: B=5980 → 5386, A=2220 → 2814 [TX006] Transfer $591: A=2814 → 2223, B=5386 → 5977 [TX007] Transfer $966: B=5977 → 5011, A=2223 → 3189 [TX008] Transfer $608: A=3189 → 2581, B=5011 → 5619 [TX009] Transfer $715: A=2581 → 1866, B=5619 → 6334 [TX010] Transfer $817: B=6334 → 5517, A=1866 → 2683 [TX011] Transfer $547: A=2683 → 2136, B=5517 → 6062 [TX012] Transfer $520: B=6064 → 5544, A=2136 → 2656 [TX013] Transfer $871: B=5544 → 4673, A=2656 → 3527 [TX014] Transfer $110: B=4673 → 4563, A=3527 → 3637 [TX015] Transfer $652: B=4563 → 3911, A=3637 → 4289 [TX016] Transfer $447: B=3911 → 3464, A=4289 → 4736 [TX017] Transfer $632: A=4736 → 4104, B=3464 → 4096 [TX018] Transfer $448: B=4096 → 3648, A=4104 → 4552 [TX019] Transfer $874: B=3648 → 2774, A=4552 → 5426 [TX020] Transfer $287: A=5426 → 5139, B=2774 → 3061 [TX021] Transfer $770: B=3061 → 2291, A=5139 → 5909 [TX022] Transfer $346: B=2291 → 1945, A=5909 → 6255 [TX023] Transfer $873: A=6255 → 5382, B=1945 → 2818 [TX024] Transfer $501: B=2818 → 2317, A=5382 → 5883 [TX025] Transfer $818: A=5883 → 5065, B=2317 → 3135 [TX026] Transfer $288: B=3135 → 2847, A=5065 → 5353 [TX027] Transfer $531: B=2847 → 2316, A=5353 → 5884 [TX028] Transfer $249: A=5884 → 5635, B=2316 → 2565 [TX029] Transfer $570: B=2565 → 1995, A=5635 → 6205 [TX030] Transfer $663: A=6205 → 5542, B=1995 → 2658 [TX031] Transfer $813: B=2658 → 1845, A=5542 → 6355 [TX032] Transfer $303: A=6355 → 6052, B=1845 → 2148 [TX033] Transfer $710: A=6052 → 5342, B=2148 → 2858 [TX034] Transfer $681: A=5342 → 4661, B=2858 → 3539 [TX035] Transfer $568: B=3539 → 2971, A=4661 → 5229 [TX036] Transfer $765: B=2971 → 2206, A=5229 → 5994 [TX037] Transfer $721: B=2206 → 1485, A=5994 → 6715 [TX038] Transfer $315: B=1485 → 1170, A=6715 → 7030 [TX039] Transfer $125: B=1170 → 1045, A=7030 → 7155 [TX040] Transfer $124: A=7155 → 7031, B=1045 → 1169 [TX041] Transfer $223: A=7031 → 6808, B=1169 → 1392 [TX042] Transfer $743: B=1392 → 649, A=6808 → 7551 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	TX011	Mathematical calculation is incorrect	CALC_ERROR	42	{"bug_type": "CALC_ERROR", "bug_location": "TX011", "explanation": "Mathematical calculation is incorrect"}	{"bug_type": "CALC_ERROR", "n_ops": 42}

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