{"abstract":"Employees with W-4 extra withholding on regular pay are under-withheld on bonuses paid with that run.","category":"Payroll withholding rules","checks":8,"contract":"Input {regular, supp, regular_wh or None, table: ascending [[threshold, base, pct]]}. f(w) uses the last row with threshold <= w: base + (w - threshold)*pct/100 half-up. Supplemental withholding = max(0, f(regular + supp) - already), where already is regular_wh when given, otherwise f(regular) (supplemental paid separately from the regular run). Return cents.","evaluation_group":"w2-payroll-withholding-aggregate-supplemental","failed_approach":"The attempt credits the smaller of the two, which is still wrong whenever actual withholding exceeds the table.","family":"w2-payroll-withholding-aggregate-supplemental-credit-for-actual-withholding","id":"FA-59151","implementations":{"attempt":{"sha256":"e4e2c6a010fd2f4935c8143b9466b56e2a3070140262a6be1e9632bdd008d541","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    def f(w):\n        base, thr, pct = 0, 0, 0\n        for t, b, p in x['table']:\n            if w >= t:\n                thr, base, pct = t, b, p\n        return base + ((w - thr) * pct + 50) // 100\n    if x['regular_wh'] is None:\n        already = f(x['regular'])\n    else:\n        already = min(x['regular_wh'], f(x['regular']))\n    return max(0, f(x['regular'] + x['supp']) - already)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('regression', {'regular': 312338, 'supp': 323072, 'table': [[0, 0, 0], [147945, 0, 10], [183116, 3517, 12], [328149, 20921, 22], [389786, 34481, 24]], 'regular_wh': 7933}, 85498), ('partial-repair probe', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('normal control', {'regular': 196542, 'supp': 546874, 'table': [[0, 0, 0], [31780, 0, 10], [158572, 12679, 12], [237601, 22162, 22], [369467, 51173, 24]], 'regular_wh': None}, 123686), ('normal control', {'regular': 166905, 'supp': 563237, 'table': [[0, 0, 0], [97424, 0, 10], [210021, 11260, 12], [309042, 23143, 22], [367427, 35988, 24]], 'regular_wh': None}, 116092), ('normal control', {'regular': 271363, 'supp': 388264, 'table': [[0, 0, 0], [56082, 0, 10], [86741, 3066, 12], [182099, 14509, 22], [317188, 44229, 24]], 'regular_wh': None}, 92267), ('normal control', {'regular': 272166, 'supp': 283715, 'table': [[0, 0, 0], [119972, 0, 10], [188902, 6893, 12], [248092, 13996, 22], [315970, 28929, 24]], 'regular_wh': None}, 67216)], [('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('normal control', {'regular': 91078, 'supp': 50965, 'table': [[0, 0, 0], [129383, 0, 10], [180861, 5148, 12], [251715, 13650, 22], [346731, 34554, 24]], 'regular_wh': None}, 1266), ('normal control', {'regular': 332685, 'supp': 265440, 'table': [[0, 0, 0], [82800, 0, 10], [155250, 7245, 12], [280472, 22272, 22], [368552, 41650, 24]], 'regular_wh': None}, 62989), ('normal control', {'regular': 371035, 'supp': 231573, 'table': [[0, 0, 0], [62708, 0, 10], [162966, 10026, 12], [294122, 25765, 22], [404634, 50078, 24]], 'regular_wh': None}, 54906), ('normal control', {'regular': 139761, 'supp': 580903, 'table': [[0, 0, 0], [33224, 0, 10], [124697, 9147, 12], [177909, 15532, 22], [324717, 47830, 24]], 'regular_wh': None}, 131902)], [('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('regression', {'regular': 317198, 'supp': 215674, 'table': [[0, 0, 0], [114323, 0, 10], [242963, 12864, 12], [288842, 18369, 22], [360034, 34031, 24]], 'regular_wh': 7312}, 68200), ('partial-repair probe', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('partial-repair probe', {'regular': 138799, 'supp': 242337, 'table': [[0, 0, 0], [67403, 0, 10], [179799, 11240, 12], [251397, 19832, 22], [387828, 49847, 24]], 'regular_wh': 45497}, 2878), ('normal control', {'regular': 311741, 'supp': 533113, 'table': [[0, 0, 0], [137329, 0, 10], [282729, 14540, 12], [396442, 28186, 22], [532518, 58123, 24]], 'regular_wh': None}, 115063), ('normal control', {'regular': 376443, 'supp': 593003, 'table': [[0, 0, 0], [149063, 0, 10], [179956, 3089, 12], [266122, 13429, 22], [344153, 30596, 24]], 'regular_wh': None}, 142320), ('normal control', {'regular': 348176, 'supp': 89132, 'table': [[0, 0, 0], [125841, 0, 10], [173895, 4805, 12], [222871, 10682, 22], [276667, 22517, 24]], 'regular_wh': None}, 21392), ('normal control', {'regular': 176368, 'supp': 539007, 'table': [[0, 0, 0], [34750, 0, 10], [89874, 5512, 12], [222171, 21388, 22], [354493, 50499, 24]], 'regular_wh': None}, 121220)], [('regression', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 282406, 'supp': 568743, 'table': [[0, 0, 0], [126319, 0, 10], [211110, 8479, 12], [332602, 23058, 22], [357109, 28450, 24]], 'regular_wh': 51500}, 95520), ('partial-repair probe', {'regular': 133684, 'supp': 525347, 'table': [[0, 0, 0], [48514, 0, 10], [163334, 11482, 12], [185105, 14095, 22], [247313, 27781, 24]], 'regular_wh': 48804}, 77789), ('normal control', {'regular': 154043, 'supp': 107955, 'table': [[0, 0, 0], [65291, 0, 10], [204262, 13897, 12], [338369, 29990, 22], [472754, 59555, 24]], 'regular_wh': None}, 11950), ('normal control', {'regular': 305173, 'supp': 536066, 'table': [[0, 0, 0], [86460, 0, 10], [179538, 9308, 12], [282113, 21617, 22], [389261, 45190, 24]], 'regular_wh': None}, 126975), ('normal control', {'regular': 123317, 'supp': 2427, 'table': [[0, 0, 0], [36593, 0, 10], [139048, 10246, 12], [231726, 21367, 22], [283287, 32710, 24]], 'regular_wh': None}, 243), ('normal control', {'regular': 45436, 'supp': 499099, 'table': [[0, 0, 0], [119668, 0, 10], [156650, 3698, 12], [228263, 12292, 22], [285280, 24836, 24]], 'regular_wh': None}, 87057)], [('regression', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 30801, 'supp': 257466, 'table': [[0, 0, 0], [111822, 0, 10], [184134, 7231, 12], [244754, 14505, 22], [338743, 35183, 24]], 'regular_wh': 42625}, 0), ('partial-repair probe', {'regular': 141294, 'supp': 528346, 'table': [[0, 0, 0], [34928, 0, 10], [149354, 11443, 12], [262856, 25063, 22], [303394, 33981, 24]], 'regular_wh': 22556}, 99324), ('normal control', {'regular': 398070, 'supp': 398441, 'table': [[0, 0, 0], [80259, 0, 10], [126225, 4597, 12], [224289, 16365, 22], [264168, 25138, 24]], 'regular_wh': None}, 95626), ('normal control', {'regular': 6755, 'supp': 478748, 'table': [[0, 0, 0], [101638, 0, 10], [146837, 4520, 12], [189797, 9675, 22], [210942, 14327, 24]], 'regular_wh': None}, 80222), ('normal control', {'regular': 174696, 'supp': 196512, 'table': [[0, 0, 0], [45315, 0, 10], [105709, 6039, 12], [224263, 20265, 22], [295174, 35865, 24]], 'regular_wh': None}, 39796), ('normal control', {'regular': 152527, 'supp': 18424, 'table': [[0, 0, 0], [106961, 0, 10], [180698, 7374, 12], [201376, 9855, 22], [237701, 17847, 24]], 'regular_wh': None}, 1842)]]\nfor i, (label, args, expected) in enumerate(fixtures[N-1]):\n    check(\"%s %d\" % (label, i), solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"868f1e580c674374ed0e9f1f675ddebd5ccc1bb54351173acade6ae3ecbb6e90","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    def f(w):\n        base, thr, pct = 0, 0, 0\n        for t, b, p in x['table']:\n            if w >= t:\n                thr, base, pct = t, b, p\n        return base + ((w - thr) * pct + 50) // 100\n    if x['regular_wh'] is None:\n        already = f(x['regular'])\n    else:\n        already = f(x['regular'])\n    return max(0, f(x['regular'] + x['supp']) - already)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('regression', {'regular': 312338, 'supp': 323072, 'table': [[0, 0, 0], [147945, 0, 10], [183116, 3517, 12], [328149, 20921, 22], [389786, 34481, 24]], 'regular_wh': 7933}, 85498), ('partial-repair probe', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('normal control', {'regular': 196542, 'supp': 546874, 'table': [[0, 0, 0], [31780, 0, 10], [158572, 12679, 12], [237601, 22162, 22], [369467, 51173, 24]], 'regular_wh': None}, 123686), ('normal control', {'regular': 166905, 'supp': 563237, 'table': [[0, 0, 0], [97424, 0, 10], [210021, 11260, 12], [309042, 23143, 22], [367427, 35988, 24]], 'regular_wh': None}, 116092), ('normal control', {'regular': 271363, 'supp': 388264, 'table': [[0, 0, 0], [56082, 0, 10], [86741, 3066, 12], [182099, 14509, 22], [317188, 44229, 24]], 'regular_wh': None}, 92267), ('normal control', {'regular': 272166, 'supp': 283715, 'table': [[0, 0, 0], [119972, 0, 10], [188902, 6893, 12], [248092, 13996, 22], [315970, 28929, 24]], 'regular_wh': None}, 67216)], [('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('normal control', {'regular': 91078, 'supp': 50965, 'table': [[0, 0, 0], [129383, 0, 10], [180861, 5148, 12], [251715, 13650, 22], [346731, 34554, 24]], 'regular_wh': None}, 1266), ('normal control', {'regular': 332685, 'supp': 265440, 'table': [[0, 0, 0], [82800, 0, 10], [155250, 7245, 12], [280472, 22272, 22], [368552, 41650, 24]], 'regular_wh': None}, 62989), ('normal control', {'regular': 371035, 'supp': 231573, 'table': [[0, 0, 0], [62708, 0, 10], [162966, 10026, 12], [294122, 25765, 22], [404634, 50078, 24]], 'regular_wh': None}, 54906), ('normal control', {'regular': 139761, 'supp': 580903, 'table': [[0, 0, 0], [33224, 0, 10], [124697, 9147, 12], [177909, 15532, 22], [324717, 47830, 24]], 'regular_wh': None}, 131902)], [('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('regression', {'regular': 317198, 'supp': 215674, 'table': [[0, 0, 0], [114323, 0, 10], [242963, 12864, 12], [288842, 18369, 22], [360034, 34031, 24]], 'regular_wh': 7312}, 68200), ('partial-repair probe', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('partial-repair probe', {'regular': 138799, 'supp': 242337, 'table': [[0, 0, 0], [67403, 0, 10], [179799, 11240, 12], [251397, 19832, 22], [387828, 49847, 24]], 'regular_wh': 45497}, 2878), ('normal control', {'regular': 311741, 'supp': 533113, 'table': [[0, 0, 0], [137329, 0, 10], [282729, 14540, 12], [396442, 28186, 22], [532518, 58123, 24]], 'regular_wh': None}, 115063), ('normal control', {'regular': 376443, 'supp': 593003, 'table': [[0, 0, 0], [149063, 0, 10], [179956, 3089, 12], [266122, 13429, 22], [344153, 30596, 24]], 'regular_wh': None}, 142320), ('normal control', {'regular': 348176, 'supp': 89132, 'table': [[0, 0, 0], [125841, 0, 10], [173895, 4805, 12], [222871, 10682, 22], [276667, 22517, 24]], 'regular_wh': None}, 21392), ('normal control', {'regular': 176368, 'supp': 539007, 'table': [[0, 0, 0], [34750, 0, 10], [89874, 5512, 12], [222171, 21388, 22], [354493, 50499, 24]], 'regular_wh': None}, 121220)], [('regression', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 282406, 'supp': 568743, 'table': [[0, 0, 0], [126319, 0, 10], [211110, 8479, 12], [332602, 23058, 22], [357109, 28450, 24]], 'regular_wh': 51500}, 95520), ('partial-repair probe', {'regular': 133684, 'supp': 525347, 'table': [[0, 0, 0], [48514, 0, 10], [163334, 11482, 12], [185105, 14095, 22], [247313, 27781, 24]], 'regular_wh': 48804}, 77789), ('normal control', {'regular': 154043, 'supp': 107955, 'table': [[0, 0, 0], [65291, 0, 10], [204262, 13897, 12], [338369, 29990, 22], [472754, 59555, 24]], 'regular_wh': None}, 11950), ('normal control', {'regular': 305173, 'supp': 536066, 'table': [[0, 0, 0], [86460, 0, 10], [179538, 9308, 12], [282113, 21617, 22], [389261, 45190, 24]], 'regular_wh': None}, 126975), ('normal control', {'regular': 123317, 'supp': 2427, 'table': [[0, 0, 0], [36593, 0, 10], [139048, 10246, 12], [231726, 21367, 22], [283287, 32710, 24]], 'regular_wh': None}, 243), ('normal control', {'regular': 45436, 'supp': 499099, 'table': [[0, 0, 0], [119668, 0, 10], [156650, 3698, 12], [228263, 12292, 22], [285280, 24836, 24]], 'regular_wh': None}, 87057)], [('regression', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 30801, 'supp': 257466, 'table': [[0, 0, 0], [111822, 0, 10], [184134, 7231, 12], [244754, 14505, 22], [338743, 35183, 24]], 'regular_wh': 42625}, 0), ('partial-repair probe', {'regular': 141294, 'supp': 528346, 'table': [[0, 0, 0], [34928, 0, 10], [149354, 11443, 12], [262856, 25063, 22], [303394, 33981, 24]], 'regular_wh': 22556}, 99324), ('normal control', {'regular': 398070, 'supp': 398441, 'table': [[0, 0, 0], [80259, 0, 10], [126225, 4597, 12], [224289, 16365, 22], [264168, 25138, 24]], 'regular_wh': None}, 95626), ('normal control', {'regular': 6755, 'supp': 478748, 'table': [[0, 0, 0], [101638, 0, 10], [146837, 4520, 12], [189797, 9675, 22], [210942, 14327, 24]], 'regular_wh': None}, 80222), ('normal control', {'regular': 174696, 'supp': 196512, 'table': [[0, 0, 0], [45315, 0, 10], [105709, 6039, 12], [224263, 20265, 22], [295174, 35865, 24]], 'regular_wh': None}, 39796), ('normal control', {'regular': 152527, 'supp': 18424, 'table': [[0, 0, 0], [106961, 0, 10], [180698, 7374, 12], [201376, 9855, 22], [237701, 17847, 24]], 'regular_wh': None}, 1842)]]\nfor i, (label, args, expected) in enumerate(fixtures[N-1]):\n    check(\"%s %d\" % (label, i), solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"3245f99752189522e62f5d81a5317984236b495a737a40c8de006594ef792b1e","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    def f(w):\n        base, thr, pct = 0, 0, 0\n        for t, b, p in x['table']:\n            if w >= t:\n                thr, base, pct = t, b, p\n        return base + ((w - thr) * pct + 50) // 100\n    if x['regular_wh'] is None:\n        already = f(x['regular'])\n    else:\n        already = x['regular_wh']\n    return max(0, f(x['regular'] + x['supp']) - already)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('regression', {'regular': 312338, 'supp': 323072, 'table': [[0, 0, 0], [147945, 0, 10], [183116, 3517, 12], [328149, 20921, 22], [389786, 34481, 24]], 'regular_wh': 7933}, 85498), ('partial-repair probe', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('normal control', {'regular': 196542, 'supp': 546874, 'table': [[0, 0, 0], [31780, 0, 10], [158572, 12679, 12], [237601, 22162, 22], [369467, 51173, 24]], 'regular_wh': None}, 123686), ('normal control', {'regular': 166905, 'supp': 563237, 'table': [[0, 0, 0], [97424, 0, 10], [210021, 11260, 12], [309042, 23143, 22], [367427, 35988, 24]], 'regular_wh': None}, 116092), ('normal control', {'regular': 271363, 'supp': 388264, 'table': [[0, 0, 0], [56082, 0, 10], [86741, 3066, 12], [182099, 14509, 22], [317188, 44229, 24]], 'regular_wh': None}, 92267), ('normal control', {'regular': 272166, 'supp': 283715, 'table': [[0, 0, 0], [119972, 0, 10], [188902, 6893, 12], [248092, 13996, 22], [315970, 28929, 24]], 'regular_wh': None}, 67216)], [('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('regression', {'regular': 22582, 'supp': 82724, 'table': [[0, 0, 0], [67793, 0, 10], [153868, 8608, 12], [184592, 12295, 22], [250677, 26834, 24]], 'regular_wh': 22068}, 0), ('partial-repair probe', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('normal control', {'regular': 91078, 'supp': 50965, 'table': [[0, 0, 0], [129383, 0, 10], [180861, 5148, 12], [251715, 13650, 22], [346731, 34554, 24]], 'regular_wh': None}, 1266), ('normal control', {'regular': 332685, 'supp': 265440, 'table': [[0, 0, 0], [82800, 0, 10], [155250, 7245, 12], [280472, 22272, 22], [368552, 41650, 24]], 'regular_wh': None}, 62989), ('normal control', {'regular': 371035, 'supp': 231573, 'table': [[0, 0, 0], [62708, 0, 10], [162966, 10026, 12], [294122, 25765, 22], [404634, 50078, 24]], 'regular_wh': None}, 54906), ('normal control', {'regular': 139761, 'supp': 580903, 'table': [[0, 0, 0], [33224, 0, 10], [124697, 9147, 12], [177909, 15532, 22], [324717, 47830, 24]], 'regular_wh': None}, 131902)], [('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('regression', {'regular': 317198, 'supp': 215674, 'table': [[0, 0, 0], [114323, 0, 10], [242963, 12864, 12], [288842, 18369, 22], [360034, 34031, 24]], 'regular_wh': 7312}, 68200), ('partial-repair probe', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('partial-repair probe', {'regular': 138799, 'supp': 242337, 'table': [[0, 0, 0], [67403, 0, 10], [179799, 11240, 12], [251397, 19832, 22], [387828, 49847, 24]], 'regular_wh': 45497}, 2878), ('normal control', {'regular': 311741, 'supp': 533113, 'table': [[0, 0, 0], [137329, 0, 10], [282729, 14540, 12], [396442, 28186, 22], [532518, 58123, 24]], 'regular_wh': None}, 115063), ('normal control', {'regular': 376443, 'supp': 593003, 'table': [[0, 0, 0], [149063, 0, 10], [179956, 3089, 12], [266122, 13429, 22], [344153, 30596, 24]], 'regular_wh': None}, 142320), ('normal control', {'regular': 348176, 'supp': 89132, 'table': [[0, 0, 0], [125841, 0, 10], [173895, 4805, 12], [222871, 10682, 22], [276667, 22517, 24]], 'regular_wh': None}, 21392), ('normal control', {'regular': 176368, 'supp': 539007, 'table': [[0, 0, 0], [34750, 0, 10], [89874, 5512, 12], [222171, 21388, 22], [354493, 50499, 24]], 'regular_wh': None}, 121220)], [('regression', {'regular': 230312, 'supp': 412759, 'table': [[0, 0, 0], [87909, 0, 10], [234168, 14626, 12], [277117, 19780, 22], [325269, 30373, 24]], 'regular_wh': 53200}, 53445), ('regression', {'regular': 218340, 'supp': 389621, 'table': [[0, 0, 0], [59946, 0, 10], [144504, 8456, 12], [240644, 19993, 22], [365163, 47387, 24]], 'regular_wh': 27085}, 78574), ('partial-repair probe', {'regular': 282406, 'supp': 568743, 'table': [[0, 0, 0], [126319, 0, 10], [211110, 8479, 12], [332602, 23058, 22], [357109, 28450, 24]], 'regular_wh': 51500}, 95520), ('partial-repair probe', {'regular': 133684, 'supp': 525347, 'table': [[0, 0, 0], [48514, 0, 10], [163334, 11482, 12], [185105, 14095, 22], [247313, 27781, 24]], 'regular_wh': 48804}, 77789), ('normal control', {'regular': 154043, 'supp': 107955, 'table': [[0, 0, 0], [65291, 0, 10], [204262, 13897, 12], [338369, 29990, 22], [472754, 59555, 24]], 'regular_wh': None}, 11950), ('normal control', {'regular': 305173, 'supp': 536066, 'table': [[0, 0, 0], [86460, 0, 10], [179538, 9308, 12], [282113, 21617, 22], [389261, 45190, 24]], 'regular_wh': None}, 126975), ('normal control', {'regular': 123317, 'supp': 2427, 'table': [[0, 0, 0], [36593, 0, 10], [139048, 10246, 12], [231726, 21367, 22], [283287, 32710, 24]], 'regular_wh': None}, 243), ('normal control', {'regular': 45436, 'supp': 499099, 'table': [[0, 0, 0], [119668, 0, 10], [156650, 3698, 12], [228263, 12292, 22], [285280, 24836, 24]], 'regular_wh': None}, 87057)], [('regression', {'regular': 301375, 'supp': 257327, 'table': [[0, 0, 0], [104655, 0, 10], [206771, 10212, 12], [296267, 20952, 22], [346695, 32046, 24]], 'regular_wh': 42656}, 40272), ('regression', {'regular': 67092, 'supp': 9466, 'table': [[0, 0, 0], [50546, 0, 10], [199313, 14877, 12], [277080, 24209, 22], [385100, 47973, 24]], 'regular_wh': 49707}, 0), ('partial-repair probe', {'regular': 30801, 'supp': 257466, 'table': [[0, 0, 0], [111822, 0, 10], [184134, 7231, 12], [244754, 14505, 22], [338743, 35183, 24]], 'regular_wh': 42625}, 0), ('partial-repair probe', {'regular': 141294, 'supp': 528346, 'table': [[0, 0, 0], [34928, 0, 10], [149354, 11443, 12], [262856, 25063, 22], [303394, 33981, 24]], 'regular_wh': 22556}, 99324), ('normal control', {'regular': 398070, 'supp': 398441, 'table': [[0, 0, 0], [80259, 0, 10], [126225, 4597, 12], [224289, 16365, 22], [264168, 25138, 24]], 'regular_wh': None}, 95626), ('normal control', {'regular': 6755, 'supp': 478748, 'table': [[0, 0, 0], [101638, 0, 10], [146837, 4520, 12], [189797, 9675, 22], [210942, 14327, 24]], 'regular_wh': None}, 80222), ('normal control', {'regular': 174696, 'supp': 196512, 'table': [[0, 0, 0], [45315, 0, 10], [105709, 6039, 12], [224263, 20265, 22], [295174, 35865, 24]], 'regular_wh': None}, 39796), ('normal control', {'regular': 152527, 'supp': 18424, 'table': [[0, 0, 0], [106961, 0, 10], [180698, 7374, 12], [201376, 9855, 22], [237701, 17847, 24]], 'regular_wh': None}, 1842)]]\nfor i, (label, args, expected) in enumerate(fixtures[N-1]):\n    check(\"%s %d\" % (label, i), solve(args), expected)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"A deterministic teaching model of a stipulated payroll rule with toy thresholds and rates. It makes no claim of conformance to any tax authority, statute or jurisdiction and is not payroll software. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"w2-payroll-withholding-aggregate-supplemental-credit-for-actual-withholding","generated_at":"2026-09-29T14:46:33.487539+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"The aggregate method withholds on combined wages, then credits what the regular payroll already withheld.","repair":"Restore the contract rule at the credit for actual withholding step: use `already = x['regular_wh']`.","root_cause":"The credit uses the table amount for regular wages instead of what was actually withheld.","sha256":"effd5ad16fd0ac7a10438289dc9328c95b929ce3d33d7abf8b0ed7263343ff13","title":"Aggregate-method supplemental withholding: credit for actual withholding · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":41.452,"exit_code":1,"observations":[{"actual":3751,"check":"regression 0","expected":0,"passed":false},{"actual":85498,"check":"regression 1","expected":85498,"passed":true},{"actual":88343,"check":"partial-repair probe 2","expected":78574,"passed":false},{"actual":946,"check":"partial-repair probe 3","expected":0,"passed":false},{"actual":123686,"check":"normal control 4","expected":123686,"passed":true},{"actual":116092,"check":"normal control 5","expected":116092,"passed":true},{"actual":92267,"check":"normal control 6","expected":92267,"passed":true},{"actual":67216,"check":"normal control 7","expected":67216,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression 0\", \"actual\": 3751, \"expected\": 0, \"passed\": false}, {\"check\": \"regression 1\", \"actual\": 85498, \"expected\": 85498, \"passed\": true}, {\"check\": \"partial-repair probe 2\", \"actual\": 88343, \"expected\": 78574, \"passed\": false}, {\"check\": \"partial-repair probe 3\", \"actual\": 946, \"expected\": 0, \"passed\": false}, {\"check\": \"normal control 4\", \"actual\": 123686, \"expected\": 123686, \"passed\": true}, {\"check\": \"normal control 5\", \"actual\": 116092, \"expected\": 116092, \"passed\": true}, {\"check\": \"normal control 6\", \"actual\": 92267, \"expected\": 92267, \"passed\": true}, {\"check\": \"normal control 7\", \"actual\": 67216, \"expected\": 67216, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.326,"exit_code":1,"observations":[{"actual":3751,"check":"regression 0","expected":0,"passed":false},{"actual":74407,"check":"regression 1","expected":85498,"passed":false},{"actual":88343,"check":"partial-repair probe 2","expected":78574,"passed":false},{"actual":946,"check":"partial-repair probe 3","expected":0,"passed":false},{"actual":123686,"check":"normal control 4","expected":123686,"passed":true},{"actual":116092,"check":"normal control 5","expected":116092,"passed":true},{"actual":92267,"check":"normal control 6","expected":92267,"passed":true},{"actual":67216,"check":"normal control 7","expected":67216,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression 0\", \"actual\": 3751, \"expected\": 0, \"passed\": false}, {\"check\": \"regression 1\", \"actual\": 74407, \"expected\": 85498, \"passed\": false}, {\"check\": \"partial-repair probe 2\", \"actual\": 88343, \"expected\": 78574, \"passed\": false}, {\"check\": \"partial-repair probe 3\", \"actual\": 946, \"expected\": 0, \"passed\": false}, {\"check\": \"normal control 4\", \"actual\": 123686, \"expected\": 123686, \"passed\": true}, {\"check\": \"normal control 5\", \"actual\": 116092, \"expected\": 116092, \"passed\": true}, {\"check\": \"normal control 6\", \"actual\": 92267, \"expected\": 92267, \"passed\": true}, {\"check\": \"normal control 7\", \"actual\": 67216, \"expected\": 67216, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":40.959,"exit_code":0,"observations":[{"actual":0,"check":"regression 0","expected":0,"passed":true},{"actual":85498,"check":"regression 1","expected":85498,"passed":true},{"actual":78574,"check":"partial-repair probe 2","expected":78574,"passed":true},{"actual":0,"check":"partial-repair probe 3","expected":0,"passed":true},{"actual":123686,"check":"normal control 4","expected":123686,"passed":true},{"actual":116092,"check":"normal control 5","expected":116092,"passed":true},{"actual":92267,"check":"normal control 6","expected":92267,"passed":true},{"actual":67216,"check":"normal control 7","expected":67216,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression 0\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"regression 1\", \"actual\": 85498, \"expected\": 85498, \"passed\": true}, {\"check\": \"partial-repair probe 2\", \"actual\": 78574, \"expected\": 78574, \"passed\": true}, {\"check\": \"partial-repair probe 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"normal control 4\", \"actual\": 123686, \"expected\": 123686, \"passed\": true}, {\"check\": \"normal control 5\", \"actual\": 116092, \"expected\": 116092, \"passed\": true}, {\"check\": \"normal control 6\", \"actual\": 92267, \"expected\": 92267, \"passed\": true}, {\"check\": \"normal control 7\", \"actual\": 67216, \"expected\": 67216, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}