{"abstract":"Coordinated local cycle timer returns a wrong result when the full yellow is reported regardless of elapsed yellow.","category":"Traffic signal timing plans","checks":8,"contract":"Input {cycle, offset, master, splits: [[phase, split s]] in sequence starting with the coordinated phase, yellow, red, ref}. Splits must sum to the cycle, else 'bad-splits'. Local time = (master - offset) mod cycle, where the offset marks the start of coordinated green (ref 'begin') or the end of coordinated green (ref 'end'). Each split is green then yellow then all-red. Return [phase, interval, seconds remaining].","evaluation_group":"w2-traffic_signal_timing_plans-coord-timer","failed_approach":"Subtracting one more second reports zero remaining in the last yellow second, which the contract never does.","family":"w2-traffic_signal_timing_plans-coord-timer-yellow-remaining","id":"FA-68046","implementations":{"attempt":{"sha256":"b643d0f7c36470b6f53be06ac1cf6418321701f961e78d796d98f0cb03d70147","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    C = x['cycle']\n    sp = x['splits']\n    y, r = x['yellow'], x['red']\n    if sum(s for _, s in sp) != C:\n        return 'bad-splits'\n    lc = (x['master'] - x['offset']) % C\n    if x['ref'] == 'end':\n        lc = (lc + sp[0][1] - y - r) % C\n    start = 0\n    for ph, s in sp:\n        ge = start + s - y - r\n        if lc < ge:\n            return [ph, 'green', ge - lc]\n        if lc < ge + y:\n            return [ph, 'yellow', ge + y - lc - 1]\n        if lc < start + s:\n            return [ph, 'red', start + s - lc]\n        start += s\n    return ['free', 'dark', 0]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 22, 'master': 276, 'splits': [[2, 30], [4, 12]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 67, 'offset': 15, 'master': 313, 'splits': [[2, 40], [4, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [4, 'yellow', 1]), ({'cycle': 90, 'offset': 55, 'master': 1000, 'splits': [[2, 18], [4, 18], [6, 24], [8, 30]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 118, 'offset': 26, 'master': 74, 'splits': [[2, 40], [4, 22], [6, 21], [8, 35]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 9]), ({'cycle': 30, 'offset': 8, 'master': 32, 'splits': [[2, 14], [4, 16]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25])], [({'cycle': 88, 'offset': 76, 'master': 606, 'splits': [[2, 19], [4, 33], [6, 23], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 52, 'offset': 51, 'master': 207, 'splits': [[2, 22], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [2, 'yellow', 3]), ({'cycle': 64, 'offset': 4, 'master': 173, 'splits': [[2, 28], [4, 16], [6, 20]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [4, 'yellow', 2]), ({'cycle': 98, 'offset': 74, 'master': 280, 'splits': [[2, 30], [4, 21], [6, 14], [8, 33]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 15]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 32, 'master': 833, 'splits': [[2, 27], [4, 15]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 1])], [({'cycle': 57, 'offset': 37, 'master': 74, 'splits': [[2, 22], [4, 16], [6, 19]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 54, 'offset': 4, 'master': 576, 'splits': [[2, 35], [4, 19]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 76, 'offset': 48, 'master': 580, 'splits': [[2, 36], [4, 40]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 4]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 64, 'offset': 4, 'master': 283, 'splits': [[2, 25], [4, 39]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 86, 'offset': 58, 'master': 977, 'splits': [[2, 31], [4, 19], [6, 36]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [2, 'green', 27])], [({'cycle': 51, 'offset': 44, 'master': 5, 'splits': [[2, 16], [4, 35]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 2]), ({'cycle': 116, 'offset': 89, 'master': 203, 'splits': [[2, 19], [4, 29], [6, 36], [8, 32]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 88, 'offset': 39, 'master': 770, 'splits': [[2, 29], [4, 25], [6, 34]], 'yellow': 3, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 37, 'offset': 13, 'master': 804, 'splits': [[2, 19], [4, 18]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 3]), ({'cycle': 86, 'offset': 61, 'master': 865, 'splits': [[2, 31], [4, 35], [6, 20]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [4, 'green', 5]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits')], [({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 47, 'offset': 23, 'master': 37, 'splits': [[2, 25], [4, 22]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 6]), ({'cycle': 86, 'offset': 78, 'master': 997, 'splits': [[2, 29], [4, 32], [6, 25]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 78, 'offset': 64, 'master': 139, 'splits': [[2, 14], [4, 15], [6, 36], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 82, 'offset': 44, 'master': 456, 'splits': [[2, 32], [4, 23], [6, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 69, 'offset': 12, 'master': 586, 'splits': [[2, 18], [4, 33], [6, 23]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, 'bad-splits')]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % 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":"0bc6a02bb53d4d1b33524dc09f203e794ccc2d7f87a813c5a440f58655ed3d91","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    C = x['cycle']\n    sp = x['splits']\n    y, r = x['yellow'], x['red']\n    if sum(s for _, s in sp) != C:\n        return 'bad-splits'\n    lc = (x['master'] - x['offset']) % C\n    if x['ref'] == 'end':\n        lc = (lc + sp[0][1] - y - r) % C\n    start = 0\n    for ph, s in sp:\n        ge = start + s - y - r\n        if lc < ge:\n            return [ph, 'green', ge - lc]\n        if lc < ge + y:\n            return [ph, 'yellow', y]\n        if lc < start + s:\n            return [ph, 'red', start + s - lc]\n        start += s\n    return ['free', 'dark', 0]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 22, 'master': 276, 'splits': [[2, 30], [4, 12]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 67, 'offset': 15, 'master': 313, 'splits': [[2, 40], [4, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [4, 'yellow', 1]), ({'cycle': 90, 'offset': 55, 'master': 1000, 'splits': [[2, 18], [4, 18], [6, 24], [8, 30]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 118, 'offset': 26, 'master': 74, 'splits': [[2, 40], [4, 22], [6, 21], [8, 35]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 9]), ({'cycle': 30, 'offset': 8, 'master': 32, 'splits': [[2, 14], [4, 16]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25])], [({'cycle': 88, 'offset': 76, 'master': 606, 'splits': [[2, 19], [4, 33], [6, 23], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 52, 'offset': 51, 'master': 207, 'splits': [[2, 22], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [2, 'yellow', 3]), ({'cycle': 64, 'offset': 4, 'master': 173, 'splits': [[2, 28], [4, 16], [6, 20]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [4, 'yellow', 2]), ({'cycle': 98, 'offset': 74, 'master': 280, 'splits': [[2, 30], [4, 21], [6, 14], [8, 33]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 15]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 32, 'master': 833, 'splits': [[2, 27], [4, 15]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 1])], [({'cycle': 57, 'offset': 37, 'master': 74, 'splits': [[2, 22], [4, 16], [6, 19]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 54, 'offset': 4, 'master': 576, 'splits': [[2, 35], [4, 19]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 76, 'offset': 48, 'master': 580, 'splits': [[2, 36], [4, 40]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 4]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 64, 'offset': 4, 'master': 283, 'splits': [[2, 25], [4, 39]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 86, 'offset': 58, 'master': 977, 'splits': [[2, 31], [4, 19], [6, 36]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [2, 'green', 27])], [({'cycle': 51, 'offset': 44, 'master': 5, 'splits': [[2, 16], [4, 35]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 2]), ({'cycle': 116, 'offset': 89, 'master': 203, 'splits': [[2, 19], [4, 29], [6, 36], [8, 32]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 88, 'offset': 39, 'master': 770, 'splits': [[2, 29], [4, 25], [6, 34]], 'yellow': 3, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 37, 'offset': 13, 'master': 804, 'splits': [[2, 19], [4, 18]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 3]), ({'cycle': 86, 'offset': 61, 'master': 865, 'splits': [[2, 31], [4, 35], [6, 20]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [4, 'green', 5]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits')], [({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 47, 'offset': 23, 'master': 37, 'splits': [[2, 25], [4, 22]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 6]), ({'cycle': 86, 'offset': 78, 'master': 997, 'splits': [[2, 29], [4, 32], [6, 25]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 78, 'offset': 64, 'master': 139, 'splits': [[2, 14], [4, 15], [6, 36], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 82, 'offset': 44, 'master': 456, 'splits': [[2, 32], [4, 23], [6, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 69, 'offset': 12, 'master': 586, 'splits': [[2, 18], [4, 33], [6, 23]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, 'bad-splits')]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % 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":"9b0c1fd4fc285e1fbbcece62a71fcd09eaeba4f05d014a51a589cca15d417afd","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    C = x['cycle']\n    sp = x['splits']\n    y, r = x['yellow'], x['red']\n    if sum(s for _, s in sp) != C:\n        return 'bad-splits'\n    lc = (x['master'] - x['offset']) % C\n    if x['ref'] == 'end':\n        lc = (lc + sp[0][1] - y - r) % C\n    start = 0\n    for ph, s in sp:\n        ge = start + s - y - r\n        if lc < ge:\n            return [ph, 'green', ge - lc]\n        if lc < ge + y:\n            return [ph, 'yellow', ge + y - lc]\n        if lc < start + s:\n            return [ph, 'red', start + s - lc]\n        start += s\n    return ['free', 'dark', 0]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 22, 'master': 276, 'splits': [[2, 30], [4, 12]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 67, 'offset': 15, 'master': 313, 'splits': [[2, 40], [4, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [4, 'yellow', 1]), ({'cycle': 90, 'offset': 55, 'master': 1000, 'splits': [[2, 18], [4, 18], [6, 24], [8, 30]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 118, 'offset': 26, 'master': 74, 'splits': [[2, 40], [4, 22], [6, 21], [8, 35]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 9]), ({'cycle': 30, 'offset': 8, 'master': 32, 'splits': [[2, 14], [4, 16]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [4, 'green', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25])], [({'cycle': 88, 'offset': 76, 'master': 606, 'splits': [[2, 19], [4, 33], [6, 23], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 52, 'offset': 51, 'master': 207, 'splits': [[2, 22], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [2, 'yellow', 3]), ({'cycle': 64, 'offset': 4, 'master': 173, 'splits': [[2, 28], [4, 16], [6, 20]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [4, 'yellow', 2]), ({'cycle': 98, 'offset': 74, 'master': 280, 'splits': [[2, 30], [4, 21], [6, 14], [8, 33]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 15]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 42, 'offset': 32, 'master': 833, 'splits': [[2, 27], [4, 15]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 1])], [({'cycle': 57, 'offset': 37, 'master': 74, 'splits': [[2, 22], [4, 16], [6, 19]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 54, 'offset': 4, 'master': 576, 'splits': [[2, 35], [4, 19]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 76, 'offset': 48, 'master': 580, 'splits': [[2, 36], [4, 40]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 4]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 64, 'offset': 4, 'master': 283, 'splits': [[2, 25], [4, 39]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 86, 'offset': 58, 'master': 977, 'splits': [[2, 31], [4, 19], [6, 36]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [2, 'green', 27])], [({'cycle': 51, 'offset': 44, 'master': 5, 'splits': [[2, 16], [4, 35]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 2]), ({'cycle': 116, 'offset': 89, 'master': 203, 'splits': [[2, 19], [4, 29], [6, 36], [8, 32]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 88, 'offset': 39, 'master': 770, 'splits': [[2, 29], [4, 25], [6, 34]], 'yellow': 3, 'red': 1, 'ref': 'begin'}, [2, 'yellow', 1]), ({'cycle': 37, 'offset': 13, 'master': 804, 'splits': [[2, 19], [4, 18]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'yellow', 3]), ({'cycle': 86, 'offset': 61, 'master': 865, 'splits': [[2, 31], [4, 35], [6, 20]], 'yellow': 3, 'red': 2, 'ref': 'end'}, [4, 'green', 5]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits')], [({'cycle': 80, 'offset': 70, 'master': 10, 'splits': [[2, 50], [4, 30]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 25]), ({'cycle': 47, 'offset': 23, 'master': 37, 'splits': [[2, 25], [4, 22]], 'yellow': 3, 'red': 2, 'ref': 'begin'}, [2, 'green', 6]), ({'cycle': 86, 'offset': 78, 'master': 997, 'splits': [[2, 29], [4, 32], [6, 25]], 'yellow': 3, 'red': 1, 'ref': 'end'}, [6, 'yellow', 1]), ({'cycle': 78, 'offset': 64, 'master': 139, 'splits': [[2, 14], [4, 15], [6, 36], [8, 13]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, [8, 'yellow', 1]), ({'cycle': 82, 'offset': 44, 'master': 456, 'splits': [[2, 32], [4, 23], [6, 27]], 'yellow': 4, 'red': 2, 'ref': 'end'}, [2, 'yellow', 2]), ({'cycle': 90, 'offset': 30, 'master': 45, 'splits': [[2, 40], [4, 25], [6, 25]], 'yellow': 4, 'red': 1, 'ref': 'end'}, [4, 'green', 10]), ({'cycle': 100, 'offset': 5, 'master': 3, 'splits': [[2, 50], [4, 30], [8, 25]], 'yellow': 4, 'red': 2, 'ref': 'begin'}, 'bad-splits'), ({'cycle': 69, 'offset': 12, 'master': 586, 'splits': [[2, 18], [4, 33], [6, 23]], 'yellow': 4, 'red': 1, 'ref': 'begin'}, 'bad-splits')]]\nfor i, (args, expected) in enumerate(fixtures[N-1]):\n    check('timing oracle' + ' %d' % 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, bounded toy model with a stipulated contract; it makes no claim of conformance to any agency manual or standard. 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-traffic_signal_timing_plans-coord-timer-yellow-remaining","generated_at":"2026-09-29T14:47:58.544834+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Signal timing arithmetic is exact and integer or rational; a wrong rule silently produces unsafe or inefficient timing plans.","repair":"Restore the yellow time remaining rule so that the step reads `[ph, 'yellow', ge + y - lc]`.","root_cause":"The remaining-time field repeats the configured yellow instead of the time left in it.","sha256":"49ca4051d8fc383319931938388abb56237bfe3d2cc66333c801783c800044e7","title":"Coordinated local cycle timer: the full yellow is reported regardless of elapsed yellow · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":42.263,"exit_code":1,"observations":[{"actual":"bad-splits","check":"timing oracle 0","expected":"bad-splits","passed":true},{"actual":[2,"yellow",1],"check":"timing oracle 1","expected":[2,"yellow",2],"passed":false},{"actual":[4,"green",10],"check":"timing oracle 2","expected":[4,"green",10],"passed":true},{"actual":[4,"yellow",0],"check":"timing oracle 3","expected":[4,"yellow",1],"passed":false},{"actual":[6,"yellow",0],"check":"timing oracle 4","expected":[6,"yellow",1],"passed":false},{"actual":[4,"green",9],"check":"timing oracle 5","expected":[4,"green",9],"passed":true},{"actual":[4,"green",1],"check":"timing oracle 6","expected":[4,"green",1],"passed":true},{"actual":[2,"green",25],"check":"timing oracle 7","expected":[2,"green",25],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": \"bad-splits\", \"expected\": \"bad-splits\", \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": [2, \"yellow\", 1], \"expected\": [2, \"yellow\", 2], \"passed\": false}, {\"check\": \"timing oracle 2\", \"actual\": [4, \"green\", 10], \"expected\": [4, \"green\", 10], \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": [4, \"yellow\", 0], \"expected\": [4, \"yellow\", 1], \"passed\": false}, {\"check\": \"timing oracle 4\", \"actual\": [6, \"yellow\", 0], \"expected\": [6, \"yellow\", 1], \"passed\": false}, {\"check\": \"timing oracle 5\", \"actual\": [4, \"green\", 9], \"expected\": [4, \"green\", 9], \"passed\": true}, {\"check\": \"timing oracle 6\", \"actual\": [4, \"green\", 1], \"expected\": [4, \"green\", 1], \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": [2, \"green\", 25], \"expected\": [2, \"green\", 25], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.027,"exit_code":1,"observations":[{"actual":"bad-splits","check":"timing oracle 0","expected":"bad-splits","passed":true},{"actual":[2,"yellow",4],"check":"timing oracle 1","expected":[2,"yellow",2],"passed":false},{"actual":[4,"green",10],"check":"timing oracle 2","expected":[4,"green",10],"passed":true},{"actual":[4,"yellow",4],"check":"timing oracle 3","expected":[4,"yellow",1],"passed":false},{"actual":[6,"yellow",4],"check":"timing oracle 4","expected":[6,"yellow",1],"passed":false},{"actual":[4,"green",9],"check":"timing oracle 5","expected":[4,"green",9],"passed":true},{"actual":[4,"green",1],"check":"timing oracle 6","expected":[4,"green",1],"passed":true},{"actual":[2,"green",25],"check":"timing oracle 7","expected":[2,"green",25],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": \"bad-splits\", \"expected\": \"bad-splits\", \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": [2, \"yellow\", 4], \"expected\": [2, \"yellow\", 2], \"passed\": false}, {\"check\": \"timing oracle 2\", \"actual\": [4, \"green\", 10], \"expected\": [4, \"green\", 10], \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": [4, \"yellow\", 4], \"expected\": [4, \"yellow\", 1], \"passed\": false}, {\"check\": \"timing oracle 4\", \"actual\": [6, \"yellow\", 4], \"expected\": [6, \"yellow\", 1], \"passed\": false}, {\"check\": \"timing oracle 5\", \"actual\": [4, \"green\", 9], \"expected\": [4, \"green\", 9], \"passed\": true}, {\"check\": \"timing oracle 6\", \"actual\": [4, \"green\", 1], \"expected\": [4, \"green\", 1], \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": [2, \"green\", 25], \"expected\": [2, \"green\", 25], \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":43.516,"exit_code":0,"observations":[{"actual":"bad-splits","check":"timing oracle 0","expected":"bad-splits","passed":true},{"actual":[2,"yellow",2],"check":"timing oracle 1","expected":[2,"yellow",2],"passed":true},{"actual":[4,"green",10],"check":"timing oracle 2","expected":[4,"green",10],"passed":true},{"actual":[4,"yellow",1],"check":"timing oracle 3","expected":[4,"yellow",1],"passed":true},{"actual":[6,"yellow",1],"check":"timing oracle 4","expected":[6,"yellow",1],"passed":true},{"actual":[4,"green",9],"check":"timing oracle 5","expected":[4,"green",9],"passed":true},{"actual":[4,"green",1],"check":"timing oracle 6","expected":[4,"green",1],"passed":true},{"actual":[2,"green",25],"check":"timing oracle 7","expected":[2,"green",25],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"timing oracle 0\", \"actual\": \"bad-splits\", \"expected\": \"bad-splits\", \"passed\": true}, {\"check\": \"timing oracle 1\", \"actual\": [2, \"yellow\", 2], \"expected\": [2, \"yellow\", 2], \"passed\": true}, {\"check\": \"timing oracle 2\", \"actual\": [4, \"green\", 10], \"expected\": [4, \"green\", 10], \"passed\": true}, {\"check\": \"timing oracle 3\", \"actual\": [4, \"yellow\", 1], \"expected\": [4, \"yellow\", 1], \"passed\": true}, {\"check\": \"timing oracle 4\", \"actual\": [6, \"yellow\", 1], \"expected\": [6, \"yellow\", 1], \"passed\": true}, {\"check\": \"timing oracle 5\", \"actual\": [4, \"green\", 9], \"expected\": [4, \"green\", 9], \"passed\": true}, {\"check\": \"timing oracle 6\", \"actual\": [4, \"green\", 1], \"expected\": [4, \"green\", 1], \"passed\": true}, {\"check\": \"timing oracle 7\", \"actual\": [2, \"green\", 25], \"expected\": [2, \"green\", 25], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}