{"abstract":"Top-floor calls are ignored or basement presses are registered.","category":"Elevator dispatch scheduling","checks":8,"contract":"Hall buttons exist on floors 0..floors-1, except no up button at the top floor and no down button at the bottom floor; other presses are ignored. A registered call lights. A car arriving at a floor serves calls matching its direction; an idle car or a car arriving at a terminal floor (where it must reverse) serves both directions. Log lit/ignored and served:<dirs> (sorted), and list pending calls sorted.","contract_signature":"x","evaluation_group":"w2-elevator_dispatch_scheduling-hall-button-lamps","failed_approach":"Dropping the lower bound registers presses below the lobby.","family":"w2-elevator_dispatch_scheduling-hall-button-lamps-floor-range","id":"FA-67796","implementations":{"attempt":{"sha256":"90a753616e64fbaecc51c21361956516ff3f1312a5e6d34127a51e53a988e338","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    top = x['floors'] - 1\n    calls = set()\n    out = []\n    for kind, f, d in x['events']:\n        if kind == 'press':\n            if not (f <= top) or (f == top and d == 'up') or (f == 0 and d == 'down'):\n                out.append('ignored')\n                continue\n            calls.add((f, d))\n            out.append('lit')\n        else:\n            both = d == 'idle' or f in (0, top)\n            served = sorted(c for c in calls if c[0] == f and (both or c[1] == d))\n            for c in served:\n                calls.discard(c)\n            out.append('served:' + ','.join(c[1] for c in served))\n    return {'log': out, 'pending': sorted([list(c) for c in calls])}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 4', {'floors': 6, 'events': [['arrive', 2, 'up'], ['press', 1, 'up'], ['press', 5, 'down'], ['press', 1, 'down'], ['arrive', 4, 'up'], ['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 0, 'idle'], ['arrive', 5, 'down'], ['press', 0, 'down']]}, {'log': ['served:', 'lit', 'lit', 'lit', 'served:', 'served:', 'served:', 'served:', 'served:down', 'ignored'], 'pending': [[1, 'down'], [1, 'up']]}), ('sampled regression 1', {'floors': 5, 'events': [['press', -1, 'down'], ['press', 4, 'down'], ['press', 4, 'down'], ['arrive', 3, 'idle'], ['press', 0, 'up'], ['press', 1, 'down'], ['press', 2, 'up'], ['arrive', 4, 'up']]}, {'log': ['ignored', 'lit', 'lit', 'served:', 'lit', 'lit', 'lit', 'served:down'], 'pending': [[0, 'up'], [1, 'down'], [2, 'up']]}), ('boundary: down button at the lobby', {'floors': 6, 'events': [['press', 0, 'down'], ['press', 0, 'up']]}, {'log': ['ignored', 'lit'], 'pending': [[0, 'up']]}), ('control 7', {'floors': 5, 'events': [['arrive', 4, 'idle'], ['press', 3, 'down'], ['arrive', 2, 'down'], ['arrive', 3, 'idle'], ['arrive', 3, 'up'], ['press', 1, 'down']]}, {'log': ['served:', 'lit', 'served:', 'served:down', 'served:', 'lit'], 'pending': [[1, 'down']]}), ('control 10', {'floors': 10, 'events': [['press', 7, 'down'], ['press', 3, 'up'], ['press', 3, 'up']]}, {'log': ['lit', 'lit', 'lit'], 'pending': [[3, 'up'], [7, 'down']]}), ('control 13', {'floors': 7, 'events': [['press', 0, 'down'], ['arrive', 4, 'up'], ['press', 3, 'up'], ['arrive', 2, 'up']]}, {'log': ['ignored', 'served:', 'lit', 'served:'], 'pending': [[3, 'up']]})], [('regression: up car at the top floor reverses', {'floors': 6, 'events': [['press', 5, 'down'], ['arrive', 5, 'up']]}, {'log': ['lit', 'served:down'], 'pending': []}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 26', {'floors': 5, 'events': [['press', 4, 'down'], ['press', 0, 'down'], ['arrive', 0, 'up'], ['press', 3, 'up'], ['press', 3, 'up'], ['press', 0, 'up'], ['arrive', 4, 'idle'], ['arrive', 0, 'down'], ['press', 4, 'down']]}, {'log': ['lit', 'ignored', 'served:', 'lit', 'lit', 'lit', 'served:down', 'served:up', 'lit'], 'pending': [[3, 'up'], [4, 'down']]}), ('control 9', {'floors': 10, 'events': [['press', -1, 'up'], ['arrive', 3, 'idle'], ['press', 5, 'down'], ['arrive', 5, 'idle'], ['press', 2, 'up'], ['arrive', 9, 'down']]}, {'log': ['ignored', 'served:', 'lit', 'served:down', 'lit', 'served:'], 'pending': [[2, 'up']]}), ('boundary: idle car serves both lamps', {'floors': 6, 'events': [['press', 3, 'up'], ['press', 3, 'down'], ['arrive', 3, 'idle']]}, {'log': ['lit', 'lit', 'served:down,up'], 'pending': []}), ('sampled regression 12', {'floors': 7, 'events': [['press', 5, 'up'], ['press', 6, 'down'], ['arrive', 2, 'idle'], ['arrive', 5, 'down'], ['press', 6, 'up']]}, {'log': ['lit', 'lit', 'served:', 'served:', 'ignored'], 'pending': [[5, 'up'], [6, 'down']]}), ('control 15', {'floors': 10, 'events': [['press', 9, 'up'], ['arrive', 5, 'down'], ['arrive', 9, 'up'], ['press', 0, 'down'], ['press', 10, 'down'], ['press', 2, 'down']]}, {'log': ['ignored', 'served:', 'served:', 'ignored', 'ignored', 'lit'], 'pending': [[2, 'down']]}), ('control 18', {'floors': 9, 'events': [['press', 5, 'down'], ['press', 1, 'down'], ['press', 7, 'down'], ['arrive', 0, 'up'], ['arrive', 3, 'up'], ['press', 7, 'up'], ['press', 5, 'up'], ['press', 8, 'up'], ['arrive', 8, 'up']]}, {'log': ['lit', 'lit', 'lit', 'served:', 'served:', 'lit', 'lit', 'ignored', 'served:'], 'pending': [[1, 'down'], [5, 'down'], [5, 'up'], [7, 'down'], [7, 'up']]})], [('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 53', {'floors': 7, 'events': [['press', 2, 'up'], ['arrive', 3, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 6, 'down'], ['arrive', 5, 'down']]}, {'log': ['lit', 'served:', 'lit', 'lit', 'lit', 'served:'], 'pending': [[2, 'up'], [3, 'up'], [4, 'down'], [6, 'down']]}), ('control 32', {'floors': 5, 'events': [['press', -1, 'up'], ['arrive', 4, 'idle'], ['press', 2, 'up'], ['press', -1, 'up']]}, {'log': ['ignored', 'served:', 'lit', 'ignored'], 'pending': [[2, 'up']]}), ('boundary: down car at the lobby reverses', {'floors': 6, 'events': [['press', 0, 'up'], ['arrive', 0, 'down']]}, {'log': ['lit', 'served:up'], 'pending': []}), ('control 23', {'floors': 10, 'events': [['press', 5, 'up'], ['press', 1, 'up'], ['arrive', 9, 'up'], ['arrive', 9, 'idle'], ['press', 9, 'up'], ['press', 9, 'up'], ['arrive', 1, 'down'], ['arrive', 9, 'up'], ['press', 4, 'up'], ['press', 4, 'down']]}, {'log': ['lit', 'lit', 'served:', 'served:', 'ignored', 'ignored', 'served:', 'served:', 'lit', 'lit'], 'pending': [[1, 'up'], [4, 'down'], [4, 'up'], [5, 'up']]}), ('sampled regression 26', {'floors': 5, 'events': [['press', 4, 'down'], ['press', 0, 'down'], ['arrive', 0, 'up'], ['press', 3, 'up'], ['press', 3, 'up'], ['press', 0, 'up'], ['arrive', 4, 'idle'], ['arrive', 0, 'down'], ['press', 4, 'down']]}, {'log': ['lit', 'ignored', 'served:', 'lit', 'lit', 'lit', 'served:down', 'served:up', 'lit'], 'pending': [[3, 'up'], [4, 'down']]}), ('control 29', {'floors': 6, 'events': [['press', 0, 'up'], ['arrive', 0, 'idle'], ['press', 5, 'up'], ['press', 6, 'down'], ['press', 0, 'up'], ['arrive', 5, 'down']]}, {'log': ['lit', 'served:up', 'ignored', 'ignored', 'lit', 'served:'], 'pending': [[0, 'up']]})], [('regression: up car at the top floor reverses', {'floors': 6, 'events': [['press', 5, 'down'], ['arrive', 5, 'up']]}, {'log': ['lit', 'served:down'], 'pending': []}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 71', {'floors': 10, 'events': [['press', 9, 'down'], ['press', 7, 'down'], ['press', 5, 'up'], ['press', 6, 'up']]}, {'log': ['lit', 'lit', 'lit', 'lit'], 'pending': [[5, 'up'], [6, 'up'], [7, 'down'], [9, 'down']]}), ('sampled regression 45', {'floors': 5, 'events': [['arrive', 4, 'up'], ['arrive', 2, 'up'], ['press', -1, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 4, 'down'], ['arrive', 2, 'up']]}, {'log': ['served:', 'served:', 'ignored', 'lit', 'lit', 'lit', 'served:'], 'pending': [[3, 'up'], [4, 'down']]}), ('boundary: passing car in the other direction', {'floors': 6, 'events': [['press', 2, 'down'], ['arrive', 2, 'up']]}, {'log': ['lit', 'served:'], 'pending': [[2, 'down']]}), ('control 34', {'floors': 5, 'events': [['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 3, 'idle'], ['arrive', 1, 'idle'], ['arrive', 0, 'down'], ['arrive', 2, 'down'], ['arrive', 1, 'down'], ['press', 1, 'down'], ['press', 4, 'up'], ['arrive', 3, 'down']]}, {'log': ['served:', 'served:', 'served:', 'served:', 'served:', 'served:', 'served:', 'lit', 'ignored', 'served:'], 'pending': [[1, 'down']]}), ('control 37', {'floors': 7, 'events': [['arrive', 4, 'up'], ['press', 1, 'up'], ['arrive', 2, 'down'], ['press', 4, 'down'], ['arrive', 0, 'idle'], ['press', 4, 'down']]}, {'log': ['served:', 'lit', 'served:', 'lit', 'served:', 'lit'], 'pending': [[1, 'up'], [4, 'down']]}), ('control 40', {'floors': 9, 'events': [['arrive', 1, 'idle'], ['press', 7, 'down'], ['arrive', 0, 'down'], ['press', -1, 'up']]}, {'log': ['served:', 'lit', 'served:', 'ignored'], 'pending': [[7, 'down']]})], [('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 4', {'floors': 6, 'events': [['arrive', 2, 'up'], ['press', 1, 'up'], ['press', 5, 'down'], ['press', 1, 'down'], ['arrive', 4, 'up'], ['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 0, 'idle'], ['arrive', 5, 'down'], ['press', 0, 'down']]}, {'log': ['served:', 'lit', 'lit', 'lit', 'served:', 'served:', 'served:', 'served:', 'served:down', 'ignored'], 'pending': [[1, 'down'], [1, 'up']]}), ('control 66', {'floors': 7, 'events': [['press', 0, 'up'], ['arrive', 1, 'idle'], ['press', -1, 'down'], ['press', -1, 'down'], ['arrive', 0, 'down'], ['press', 2, 'up'], ['arrive', 4, 'up'], ['press', -1, 'down']]}, {'log': ['lit', 'served:', 'ignored', 'ignored', 'served:up', 'lit', 'served:', 'ignored'], 'pending': [[2, 'up']]}), ('boundary: down button at the lobby', {'floors': 6, 'events': [['press', 0, 'down'], ['press', 0, 'up']]}, {'log': ['ignored', 'lit'], 'pending': [[0, 'up']]}), ('sampled regression 45', {'floors': 5, 'events': [['arrive', 4, 'up'], ['arrive', 2, 'up'], ['press', -1, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 4, 'down'], ['arrive', 2, 'up']]}, {'log': ['served:', 'served:', 'ignored', 'lit', 'lit', 'lit', 'served:'], 'pending': [[3, 'up'], [4, 'down']]}), ('sampled regression 48', {'floors': 9, 'events': [['arrive', 8, 'idle'], ['press', 2, 'down'], ['press', 2, 'down'], ['press', 9, 'down'], ['press', -1, 'up'], ['arrive', 0, 'idle'], ['press', 8, 'down']]}, {'log': ['served:', 'lit', 'lit', 'ignored', 'ignored', 'served:', 'lit'], 'pending': [[2, 'down'], [8, 'down']]}), ('sampled regression 51', {'floors': 7, 'events': [['press', 7, 'down'], ['press', 4, 'down'], ['press', 6, 'down']]}, {'log': ['ignored', 'lit', 'lit'], 'pending': [[4, 'down'], [6, 'down']]})]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, 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":"c17bb59d28375a98d65a3d6d0715672a7e06f5693104c7d7b00817eb7dc8cff5","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    top = x['floors'] - 1\n    calls = set()\n    out = []\n    for kind, f, d in x['events']:\n        if kind == 'press':\n            if not (0 <= f < top) or (f == top and d == 'up') or (f == 0 and d == 'down'):\n                out.append('ignored')\n                continue\n            calls.add((f, d))\n            out.append('lit')\n        else:\n            both = d == 'idle' or f in (0, top)\n            served = sorted(c for c in calls if c[0] == f and (both or c[1] == d))\n            for c in served:\n                calls.discard(c)\n            out.append('served:' + ','.join(c[1] for c in served))\n    return {'log': out, 'pending': sorted([list(c) for c in calls])}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 4', {'floors': 6, 'events': [['arrive', 2, 'up'], ['press', 1, 'up'], ['press', 5, 'down'], ['press', 1, 'down'], ['arrive', 4, 'up'], ['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 0, 'idle'], ['arrive', 5, 'down'], ['press', 0, 'down']]}, {'log': ['served:', 'lit', 'lit', 'lit', 'served:', 'served:', 'served:', 'served:', 'served:down', 'ignored'], 'pending': [[1, 'down'], [1, 'up']]}), ('sampled regression 1', {'floors': 5, 'events': [['press', -1, 'down'], ['press', 4, 'down'], ['press', 4, 'down'], ['arrive', 3, 'idle'], ['press', 0, 'up'], ['press', 1, 'down'], ['press', 2, 'up'], ['arrive', 4, 'up']]}, {'log': ['ignored', 'lit', 'lit', 'served:', 'lit', 'lit', 'lit', 'served:down'], 'pending': [[0, 'up'], [1, 'down'], [2, 'up']]}), ('boundary: down button at the lobby', {'floors': 6, 'events': [['press', 0, 'down'], ['press', 0, 'up']]}, {'log': ['ignored', 'lit'], 'pending': [[0, 'up']]}), ('control 7', {'floors': 5, 'events': [['arrive', 4, 'idle'], ['press', 3, 'down'], ['arrive', 2, 'down'], ['arrive', 3, 'idle'], ['arrive', 3, 'up'], ['press', 1, 'down']]}, {'log': ['served:', 'lit', 'served:', 'served:down', 'served:', 'lit'], 'pending': [[1, 'down']]}), ('control 10', {'floors': 10, 'events': [['press', 7, 'down'], ['press', 3, 'up'], ['press', 3, 'up']]}, {'log': ['lit', 'lit', 'lit'], 'pending': [[3, 'up'], [7, 'down']]}), ('control 13', {'floors': 7, 'events': [['press', 0, 'down'], ['arrive', 4, 'up'], ['press', 3, 'up'], ['arrive', 2, 'up']]}, {'log': ['ignored', 'served:', 'lit', 'served:'], 'pending': [[3, 'up']]})], [('regression: up car at the top floor reverses', {'floors': 6, 'events': [['press', 5, 'down'], ['arrive', 5, 'up']]}, {'log': ['lit', 'served:down'], 'pending': []}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 26', {'floors': 5, 'events': [['press', 4, 'down'], ['press', 0, 'down'], ['arrive', 0, 'up'], ['press', 3, 'up'], ['press', 3, 'up'], ['press', 0, 'up'], ['arrive', 4, 'idle'], ['arrive', 0, 'down'], ['press', 4, 'down']]}, {'log': ['lit', 'ignored', 'served:', 'lit', 'lit', 'lit', 'served:down', 'served:up', 'lit'], 'pending': [[3, 'up'], [4, 'down']]}), ('control 9', {'floors': 10, 'events': [['press', -1, 'up'], ['arrive', 3, 'idle'], ['press', 5, 'down'], ['arrive', 5, 'idle'], ['press', 2, 'up'], ['arrive', 9, 'down']]}, {'log': ['ignored', 'served:', 'lit', 'served:down', 'lit', 'served:'], 'pending': [[2, 'up']]}), ('boundary: idle car serves both lamps', {'floors': 6, 'events': [['press', 3, 'up'], ['press', 3, 'down'], ['arrive', 3, 'idle']]}, {'log': ['lit', 'lit', 'served:down,up'], 'pending': []}), ('sampled regression 12', {'floors': 7, 'events': [['press', 5, 'up'], ['press', 6, 'down'], ['arrive', 2, 'idle'], ['arrive', 5, 'down'], ['press', 6, 'up']]}, {'log': ['lit', 'lit', 'served:', 'served:', 'ignored'], 'pending': [[5, 'up'], [6, 'down']]}), ('control 15', {'floors': 10, 'events': [['press', 9, 'up'], ['arrive', 5, 'down'], ['arrive', 9, 'up'], ['press', 0, 'down'], ['press', 10, 'down'], ['press', 2, 'down']]}, {'log': ['ignored', 'served:', 'served:', 'ignored', 'ignored', 'lit'], 'pending': [[2, 'down']]}), ('control 18', {'floors': 9, 'events': [['press', 5, 'down'], ['press', 1, 'down'], ['press', 7, 'down'], ['arrive', 0, 'up'], ['arrive', 3, 'up'], ['press', 7, 'up'], ['press', 5, 'up'], ['press', 8, 'up'], ['arrive', 8, 'up']]}, {'log': ['lit', 'lit', 'lit', 'served:', 'served:', 'lit', 'lit', 'ignored', 'served:'], 'pending': [[1, 'down'], [5, 'down'], [5, 'up'], [7, 'down'], [7, 'up']]})], [('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 53', {'floors': 7, 'events': [['press', 2, 'up'], ['arrive', 3, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 6, 'down'], ['arrive', 5, 'down']]}, {'log': ['lit', 'served:', 'lit', 'lit', 'lit', 'served:'], 'pending': [[2, 'up'], [3, 'up'], [4, 'down'], [6, 'down']]}), ('control 32', {'floors': 5, 'events': [['press', -1, 'up'], ['arrive', 4, 'idle'], ['press', 2, 'up'], ['press', -1, 'up']]}, {'log': ['ignored', 'served:', 'lit', 'ignored'], 'pending': [[2, 'up']]}), ('boundary: down car at the lobby reverses', {'floors': 6, 'events': [['press', 0, 'up'], ['arrive', 0, 'down']]}, {'log': ['lit', 'served:up'], 'pending': []}), ('control 23', {'floors': 10, 'events': [['press', 5, 'up'], ['press', 1, 'up'], ['arrive', 9, 'up'], ['arrive', 9, 'idle'], ['press', 9, 'up'], ['press', 9, 'up'], ['arrive', 1, 'down'], ['arrive', 9, 'up'], ['press', 4, 'up'], ['press', 4, 'down']]}, {'log': ['lit', 'lit', 'served:', 'served:', 'ignored', 'ignored', 'served:', 'served:', 'lit', 'lit'], 'pending': [[1, 'up'], [4, 'down'], [4, 'up'], [5, 'up']]}), ('sampled regression 26', {'floors': 5, 'events': [['press', 4, 'down'], ['press', 0, 'down'], ['arrive', 0, 'up'], ['press', 3, 'up'], ['press', 3, 'up'], ['press', 0, 'up'], ['arrive', 4, 'idle'], ['arrive', 0, 'down'], ['press', 4, 'down']]}, {'log': ['lit', 'ignored', 'served:', 'lit', 'lit', 'lit', 'served:down', 'served:up', 'lit'], 'pending': [[3, 'up'], [4, 'down']]}), ('control 29', {'floors': 6, 'events': [['press', 0, 'up'], ['arrive', 0, 'idle'], ['press', 5, 'up'], ['press', 6, 'down'], ['press', 0, 'up'], ['arrive', 5, 'down']]}, {'log': ['lit', 'served:up', 'ignored', 'ignored', 'lit', 'served:'], 'pending': [[0, 'up']]})], [('regression: up car at the top floor reverses', {'floors': 6, 'events': [['press', 5, 'down'], ['arrive', 5, 'up']]}, {'log': ['lit', 'served:down'], 'pending': []}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 71', {'floors': 10, 'events': [['press', 9, 'down'], ['press', 7, 'down'], ['press', 5, 'up'], ['press', 6, 'up']]}, {'log': ['lit', 'lit', 'lit', 'lit'], 'pending': [[5, 'up'], [6, 'up'], [7, 'down'], [9, 'down']]}), ('sampled regression 45', {'floors': 5, 'events': [['arrive', 4, 'up'], ['arrive', 2, 'up'], ['press', -1, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 4, 'down'], ['arrive', 2, 'up']]}, {'log': ['served:', 'served:', 'ignored', 'lit', 'lit', 'lit', 'served:'], 'pending': [[3, 'up'], [4, 'down']]}), ('boundary: passing car in the other direction', {'floors': 6, 'events': [['press', 2, 'down'], ['arrive', 2, 'up']]}, {'log': ['lit', 'served:'], 'pending': [[2, 'down']]}), ('control 34', {'floors': 5, 'events': [['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 3, 'idle'], ['arrive', 1, 'idle'], ['arrive', 0, 'down'], ['arrive', 2, 'down'], ['arrive', 1, 'down'], ['press', 1, 'down'], ['press', 4, 'up'], ['arrive', 3, 'down']]}, {'log': ['served:', 'served:', 'served:', 'served:', 'served:', 'served:', 'served:', 'lit', 'ignored', 'served:'], 'pending': [[1, 'down']]}), ('control 37', {'floors': 7, 'events': [['arrive', 4, 'up'], ['press', 1, 'up'], ['arrive', 2, 'down'], ['press', 4, 'down'], ['arrive', 0, 'idle'], ['press', 4, 'down']]}, {'log': ['served:', 'lit', 'served:', 'lit', 'served:', 'lit'], 'pending': [[1, 'up'], [4, 'down']]}), ('control 40', {'floors': 9, 'events': [['arrive', 1, 'idle'], ['press', 7, 'down'], ['arrive', 0, 'down'], ['press', -1, 'up']]}, {'log': ['served:', 'lit', 'served:', 'ignored'], 'pending': [[7, 'down']]})], [('regression: up button at the top floor', {'floors': 6, 'events': [['press', 5, 'up'], ['press', 5, 'down']]}, {'log': ['ignored', 'lit'], 'pending': [[5, 'down']]}), ('boundary: floor above the shaft', {'floors': 6, 'events': [['press', 6, 'down'], ['press', -1, 'up']]}, {'log': ['ignored', 'ignored'], 'pending': []}), ('sampled regression 4', {'floors': 6, 'events': [['arrive', 2, 'up'], ['press', 1, 'up'], ['press', 5, 'down'], ['press', 1, 'down'], ['arrive', 4, 'up'], ['arrive', 3, 'up'], ['arrive', 0, 'idle'], ['arrive', 0, 'idle'], ['arrive', 5, 'down'], ['press', 0, 'down']]}, {'log': ['served:', 'lit', 'lit', 'lit', 'served:', 'served:', 'served:', 'served:', 'served:down', 'ignored'], 'pending': [[1, 'down'], [1, 'up']]}), ('control 66', {'floors': 7, 'events': [['press', 0, 'up'], ['arrive', 1, 'idle'], ['press', -1, 'down'], ['press', -1, 'down'], ['arrive', 0, 'down'], ['press', 2, 'up'], ['arrive', 4, 'up'], ['press', -1, 'down']]}, {'log': ['lit', 'served:', 'ignored', 'ignored', 'served:up', 'lit', 'served:', 'ignored'], 'pending': [[2, 'up']]}), ('boundary: down button at the lobby', {'floors': 6, 'events': [['press', 0, 'down'], ['press', 0, 'up']]}, {'log': ['ignored', 'lit'], 'pending': [[0, 'up']]}), ('sampled regression 45', {'floors': 5, 'events': [['arrive', 4, 'up'], ['arrive', 2, 'up'], ['press', -1, 'up'], ['press', 4, 'down'], ['press', 3, 'up'], ['press', 4, 'down'], ['arrive', 2, 'up']]}, {'log': ['served:', 'served:', 'ignored', 'lit', 'lit', 'lit', 'served:'], 'pending': [[3, 'up'], [4, 'down']]}), ('sampled regression 48', {'floors': 9, 'events': [['arrive', 8, 'idle'], ['press', 2, 'down'], ['press', 2, 'down'], ['press', 9, 'down'], ['press', -1, 'up'], ['arrive', 0, 'idle'], ['press', 8, 'down']]}, {'log': ['served:', 'lit', 'lit', 'ignored', 'ignored', 'served:', 'lit'], 'pending': [[2, 'down'], [8, 'down']]}), ('sampled regression 51', {'floors': 7, 'events': [['press', 7, 'down'], ['press', 4, 'down'], ['press', 6, 'down']]}, {'log': ['ignored', 'lit', 'lit'], 'pending': [[4, 'down'], [6, 'down']]})]]\nfor label, args, expected in fixtures[N-1]:\n    check(label, 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":"Stipulated toy lift-control contract for a bounded teaching model; it makes no claim of conformance to any lift code or vendor dispatcher and omits real safety cases. 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-elevator_dispatch_scheduling-hall-button-lamps-floor-range","generated_at":"2026-09-29T14:47:56.276775+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Lift group controllers make these decisions many times per minute; a wrong answer strands passengers, wastes trips or overrides a safety rule.","root_cause":"The top floor falls outside the accepted range.","sha256":"b7b02a3a12919ee967371b33c79dfe845a4d3d9649a21bc4546a55ae2c1cbcc4","title":"Hall button registration and cancellation: floor range · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":40.614,"exit_code":1,"observations":[{"actual":{"log":["ignored","lit"],"pending":[[5,"down"]]},"check":"regression: up button at the top floor","expected":{"log":["ignored","lit"],"pending":[[5,"down"]]},"passed":true},{"actual":{"log":["ignored","lit"],"pending":[[-1,"up"]]},"check":"boundary: floor above the shaft","expected":{"log":["ignored","ignored"],"pending":[]},"passed":false},{"actual":{"log":["served:","lit","lit","lit","served:","served:","served:","served:","served:down","ignored"],"pending":[[1,"down"],[1,"up"]]},"check":"sampled regression 4","expected":{"log":["served:","lit","lit","lit","served:","served:","served:","served:","served:down","ignored"],"pending":[[1,"down"],[1,"up"]]},"passed":true},{"actual":{"log":["lit","lit","lit","served:","lit","lit","lit","served:down"],"pending":[[-1,"down"],[0,"up"],[1,"down"],[2,"up"]]},"check":"sampled regression 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\"regression: up button at the top floor\", \"actual\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[5, \"down\"]]}, \"expected\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[5, \"down\"]]}, \"passed\": true}, {\"check\": \"boundary: floor above the shaft\", \"actual\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[-1, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"ignored\"], \"pending\": []}, \"passed\": false}, {\"check\": \"sampled regression 4\", \"actual\": {\"log\": [\"served:\", \"lit\", \"lit\", \"lit\", \"served:\", \"served:\", \"served:\", \"served:\", \"served:down\", \"ignored\"], \"pending\": [[1, \"down\"], [1, \"up\"]]}, \"expected\": {\"log\": [\"served:\", \"lit\", \"lit\", \"lit\", \"served:\", \"served:\", \"served:\", \"served:\", \"served:down\", \"ignored\"], \"pending\": [[1, \"down\"], [1, \"up\"]]}, \"passed\": true}, {\"check\": \"sampled regression 1\", \"actual\": {\"log\": [\"lit\", \"lit\", \"lit\", \"served:\", \"lit\", \"lit\", \"lit\", \"served:down\"], \"pending\": [[-1, \"down\"], [0, \"up\"], [1, \"down\"], [2, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"lit\", \"lit\", \"served:\", \"lit\", \"lit\", \"lit\", \"served:down\"], \"pending\": [[0, \"up\"], [1, \"down\"], [2, \"up\"]]}, \"passed\": false}, {\"check\": \"boundary: down button at the lobby\", \"actual\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[0, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[0, \"up\"]]}, \"passed\": true}, {\"check\": \"control 7\", \"actual\": {\"log\": [\"served:\", \"lit\", \"served:\", \"served:down\", \"served:\", \"lit\"], \"pending\": [[1, \"down\"]]}, \"expected\": {\"log\": [\"served:\", \"lit\", \"served:\", \"served:down\", \"served:\", \"lit\"], \"pending\": [[1, \"down\"]]}, \"passed\": true}, {\"check\": \"control 10\", \"actual\": {\"log\": [\"lit\", \"lit\", \"lit\"], \"pending\": [[3, \"up\"], [7, \"down\"]]}, \"expected\": {\"log\": [\"lit\", \"lit\", \"lit\"], \"pending\": [[3, \"up\"], [7, \"down\"]]}, \"passed\": true}, {\"check\": \"control 13\", \"actual\": {\"log\": [\"ignored\", \"served:\", \"lit\", \"served:\"], \"pending\": [[3, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"served:\", \"lit\", \"served:\"], \"pending\": [[3, \"up\"]]}, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.514,"exit_code":1,"observations":[{"actual":{"log":["ignored","ignored"],"pending":[]},"check":"regression: up button at the top floor","expected":{"log":["ignored","lit"],"pending":[[5,"down"]]},"passed":false},{"actual":{"log":["ignored","ignored"],"pending":[]},"check":"boundary: floor above the shaft","expected":{"log":["ignored","ignored"],"pending":[]},"passed":true},{"actual":{"log":["served:","lit","ignored","lit","served:","served:","served:","served:","served:","ignored"],"pending":[[1,"down"],[1,"up"]]},"check":"sampled regression 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\"expected\": {\"log\": [\"served:\", \"lit\", \"lit\", \"lit\", \"served:\", \"served:\", \"served:\", \"served:\", \"served:down\", \"ignored\"], \"pending\": [[1, \"down\"], [1, \"up\"]]}, \"passed\": false}, {\"check\": \"sampled regression 1\", \"actual\": {\"log\": [\"ignored\", \"ignored\", \"ignored\", \"served:\", \"lit\", \"lit\", \"lit\", \"served:\"], \"pending\": [[0, \"up\"], [1, \"down\"], [2, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"lit\", \"lit\", \"served:\", \"lit\", \"lit\", \"lit\", \"served:down\"], \"pending\": [[0, \"up\"], [1, \"down\"], [2, \"up\"]]}, \"passed\": false}, {\"check\": \"boundary: down button at the lobby\", \"actual\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[0, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"lit\"], \"pending\": [[0, \"up\"]]}, \"passed\": true}, {\"check\": \"control 7\", \"actual\": {\"log\": [\"served:\", \"lit\", \"served:\", \"served:down\", \"served:\", \"lit\"], \"pending\": [[1, \"down\"]]}, \"expected\": {\"log\": [\"served:\", \"lit\", \"served:\", \"served:down\", \"served:\", \"lit\"], \"pending\": [[1, \"down\"]]}, \"passed\": true}, {\"check\": \"control 10\", \"actual\": {\"log\": [\"lit\", \"lit\", \"lit\"], \"pending\": [[3, \"up\"], [7, \"down\"]]}, \"expected\": {\"log\": [\"lit\", \"lit\", \"lit\"], \"pending\": [[3, \"up\"], [7, \"down\"]]}, \"passed\": true}, {\"check\": \"control 13\", \"actual\": {\"log\": [\"ignored\", \"served:\", \"lit\", \"served:\"], \"pending\": [[3, \"up\"]]}, \"expected\": {\"log\": [\"ignored\", \"served:\", \"lit\", \"served:\"], \"pending\": [[3, \"up\"]]}, \"passed\": true}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}