{"abstract":"The doors reopen a third time instead of nudging, or safety-edge contacts bring nudging forward.","category":"Elevator dispatch scheduling","checks":8,"contract":"During a door cycle each light-curtain obstruction reopens the doors and counts; the third obstruction, or an obstruction while the curtain has been blocked continuously for 20 s or more since the first unbroken obstruction, starts nudging (slow close, curtain ignored). While nudging, curtain obstructions are ignored. The mechanical safety edge always reopens and does not affect counting. unblock ends a continuous blockage. closed ends the cycle and resets everything.","evaluation_group":"w2-elevator_dispatch_scheduling-door-obstruction-nudging","failed_approach":"Counting safety-edge contacts towards the limit nudges after edge reopenings.","family":"w2-elevator_dispatch_scheduling-door-obstruction-nudging-reopen-limit","id":"FA-67641","implementations":{"attempt":{"sha256":"f09cdddb3d219ff33811879b9731bbad9a86cb98adc12835bf8f6b96d966b43a","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    count = 0\n    nudge = False\n    block_start = None\n    out = []\n    for t, ev in x['events']:\n        if ev == 'obstruct':\n            if block_start is None:\n                block_start = t\n            if nudge:\n                out.append('ignored')\n            else:\n                count += 1\n                if count >= 3 or t - block_start >= 20:\n                    nudge = True\n                    out.append('nudge')\n                else:\n                    out.append('reopen')\n        elif ev == 'unblock':\n            block_start = None\n        elif ev == 'edge':\n            count += 1\n            out.append('reopen')\n        elif ev == 'closed':\n            count = 0\n            nudge = False\n            block_start = None\n            out.append('done')\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 4', {'events': [[5, 'edge'], [10, 'unblock'], [11, 'obstruct'], [19, 'closed']]}, ['reopen', 'reopen', 'done']), ('control 7', {'events': [[2, 'unblock'], [10, 'edge'], [18, 'obstruct'], [23, 'unblock'], [28, 'edge'], [33, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 10', {'events': [[8, 'edge'], [13, 'obstruct'], [18, 'edge'], [30, 'unblock'], [35, 'obstruct'], [40, 'obstruct'], [42, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge'])], [('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 17', {'events': [[5, 'unblock'], [13, 'unblock'], [14, 'closed'], [26, 'obstruct'], [34, 'edge'], [36, 'obstruct'], [48, 'unblock'], [60, 'obstruct'], [72, 'unblock']]}, ['done', 'reopen', 'reopen', 'reopen', 'nudge']), ('sampled regression 13', {'events': [[5, 'unblock'], [13, 'obstruct'], [21, 'closed'], [29, 'edge'], [34, 'obstruct'], [46, 'obstruct'], [47, 'unblock'], [55, 'obstruct'], [63, 'closed'], [64, 'unblock']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'done']), ('boundary: new cycle after closing', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct'], [5, 'unblock']]}, ['reopen', 'reopen', 'done', 'reopen']), ('control 12', {'events': [[5, 'obstruct'], [13, 'edge'], [15, 'unblock'], [16, 'obstruct'], [21, 'unblock'], [22, 'edge'], [30, 'closed'], [32, 'obstruct'], [44, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen']), ('sampled regression 15', {'events': [[8, 'obstruct'], [9, 'obstruct'], [10, 'obstruct'], [11, 'unblock'], [16, 'obstruct'], [24, 'obstruct'], [29, 'edge']]}, ['reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'reopen']), ('sampled regression 18', {'events': [[12, 'obstruct'], [20, 'obstruct'], [22, 'obstruct']]}, ['reopen', 'reopen', 'nudge'])], [('regression: curtain broken then blocked again', {'events': [[0, 'obstruct'], [5, 'unblock'], [15, 'obstruct'], [26, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 28', {'events': [[12, 'unblock'], [20, 'edge'], [32, 'edge'], [33, 'obstruct'], [35, 'obstruct'], [40, 'obstruct'], [41, 'obstruct'], [53, 'obstruct'], [58, 'closed']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'done']), ('control 29', {'events': [[8, 'edge'], [10, 'obstruct'], [12, 'obstruct'], [20, 'closed']]}, ['reopen', 'reopen', 'reopen', 'done']), ('boundary: curtain held for twenty seconds', {'events': [[0, 'obstruct'], [20, 'obstruct']]}, ['reopen', 'nudge']), ('control 23', {'events': [[1, 'unblock'], [6, 'unblock'], [18, 'obstruct'], [30, 'closed']]}, ['reopen', 'done']), ('sampled regression 26', {'events': [[12, 'closed'], [13, 'closed'], [15, 'obstruct'], [17, 'obstruct'], [19, 'obstruct']]}, ['done', 'done', 'reopen', 'reopen', 'nudge']), ('sampled regression 32', {'events': [[8, 'closed'], [13, 'unblock'], [15, 'obstruct'], [16, 'obstruct'], [17, 'obstruct'], [19, 'unblock'], [31, 'obstruct'], [36, 'obstruct']]}, ['done', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored'])], [('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 64', {'events': [[8, 'obstruct'], [13, 'edge'], [18, 'unblock'], [26, 'unblock'], [34, 'obstruct'], [36, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'nudge']), ('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('sampled regression 34', {'events': [[8, 'edge'], [16, 'obstruct'], [24, 'obstruct'], [36, 'closed'], [48, 'obstruct'], [60, 'obstruct'], [62, 'obstruct'], [64, 'unblock'], [72, 'obstruct'], [80, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen', 'nudge', 'ignored']), ('control 37', {'events': [[2, 'closed'], [4, 'closed'], [9, 'obstruct'], [21, 'edge']]}, ['done', 'done', 'reopen', 'reopen']), ('control 40', {'events': [[2, 'closed'], [7, 'obstruct'], [15, 'edge'], [16, 'obstruct'], [18, 'closed']]}, ['done', 'reopen', 'reopen', 'reopen', 'done'])], [('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 72', {'events': [[12, 'obstruct'], [14, 'obstruct'], [15, 'unblock'], [20, 'obstruct'], [32, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 45', {'events': [[5, 'edge'], [17, 'closed'], [22, 'obstruct'], [24, 'closed']]}, ['reopen', 'done', 'reopen', 'done']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('control 51', {'events': [[8, 'closed'], [9, 'closed'], [14, 'obstruct'], [26, 'closed'], [38, 'obstruct']]}, ['done', 'done', 'reopen', 'done', 'reopen'])]]\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":"d0fa54837017071f0c150e408d233bcbccdebb96d13ba23b5d35fca0e23bef59","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    count = 0\n    nudge = False\n    block_start = None\n    out = []\n    for t, ev in x['events']:\n        if ev == 'obstruct':\n            if block_start is None:\n                block_start = t\n            if nudge:\n                out.append('ignored')\n            else:\n                count += 1\n                if count > 3 or t - block_start >= 20:\n                    nudge = True\n                    out.append('nudge')\n                else:\n                    out.append('reopen')\n        elif ev == 'unblock':\n            block_start = None\n        elif ev == 'edge':\n            out.append('reopen')\n        elif ev == 'closed':\n            count = 0\n            nudge = False\n            block_start = None\n            out.append('done')\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 4', {'events': [[5, 'edge'], [10, 'unblock'], [11, 'obstruct'], [19, 'closed']]}, ['reopen', 'reopen', 'done']), ('control 7', {'events': [[2, 'unblock'], [10, 'edge'], [18, 'obstruct'], [23, 'unblock'], [28, 'edge'], [33, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 10', {'events': [[8, 'edge'], [13, 'obstruct'], [18, 'edge'], [30, 'unblock'], [35, 'obstruct'], [40, 'obstruct'], [42, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge'])], [('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 17', {'events': [[5, 'unblock'], [13, 'unblock'], [14, 'closed'], [26, 'obstruct'], [34, 'edge'], [36, 'obstruct'], [48, 'unblock'], [60, 'obstruct'], [72, 'unblock']]}, ['done', 'reopen', 'reopen', 'reopen', 'nudge']), ('sampled regression 13', {'events': [[5, 'unblock'], [13, 'obstruct'], [21, 'closed'], [29, 'edge'], [34, 'obstruct'], [46, 'obstruct'], [47, 'unblock'], [55, 'obstruct'], [63, 'closed'], [64, 'unblock']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'done']), ('boundary: new cycle after closing', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct'], [5, 'unblock']]}, ['reopen', 'reopen', 'done', 'reopen']), ('control 12', {'events': [[5, 'obstruct'], [13, 'edge'], [15, 'unblock'], [16, 'obstruct'], [21, 'unblock'], [22, 'edge'], [30, 'closed'], [32, 'obstruct'], [44, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen']), ('sampled regression 15', {'events': [[8, 'obstruct'], [9, 'obstruct'], [10, 'obstruct'], [11, 'unblock'], [16, 'obstruct'], [24, 'obstruct'], [29, 'edge']]}, ['reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'reopen']), ('sampled regression 18', {'events': [[12, 'obstruct'], [20, 'obstruct'], [22, 'obstruct']]}, ['reopen', 'reopen', 'nudge'])], [('regression: curtain broken then blocked again', {'events': [[0, 'obstruct'], [5, 'unblock'], [15, 'obstruct'], [26, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 28', {'events': [[12, 'unblock'], [20, 'edge'], [32, 'edge'], [33, 'obstruct'], [35, 'obstruct'], [40, 'obstruct'], [41, 'obstruct'], [53, 'obstruct'], [58, 'closed']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'done']), ('control 29', {'events': [[8, 'edge'], [10, 'obstruct'], [12, 'obstruct'], [20, 'closed']]}, ['reopen', 'reopen', 'reopen', 'done']), ('boundary: curtain held for twenty seconds', {'events': [[0, 'obstruct'], [20, 'obstruct']]}, ['reopen', 'nudge']), ('control 23', {'events': [[1, 'unblock'], [6, 'unblock'], [18, 'obstruct'], [30, 'closed']]}, ['reopen', 'done']), ('sampled regression 26', {'events': [[12, 'closed'], [13, 'closed'], [15, 'obstruct'], [17, 'obstruct'], [19, 'obstruct']]}, ['done', 'done', 'reopen', 'reopen', 'nudge']), ('sampled regression 32', {'events': [[8, 'closed'], [13, 'unblock'], [15, 'obstruct'], [16, 'obstruct'], [17, 'obstruct'], [19, 'unblock'], [31, 'obstruct'], [36, 'obstruct']]}, ['done', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored'])], [('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 64', {'events': [[8, 'obstruct'], [13, 'edge'], [18, 'unblock'], [26, 'unblock'], [34, 'obstruct'], [36, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'nudge']), ('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('sampled regression 34', {'events': [[8, 'edge'], [16, 'obstruct'], [24, 'obstruct'], [36, 'closed'], [48, 'obstruct'], [60, 'obstruct'], [62, 'obstruct'], [64, 'unblock'], [72, 'obstruct'], [80, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen', 'nudge', 'ignored']), ('control 37', {'events': [[2, 'closed'], [4, 'closed'], [9, 'obstruct'], [21, 'edge']]}, ['done', 'done', 'reopen', 'reopen']), ('control 40', {'events': [[2, 'closed'], [7, 'obstruct'], [15, 'edge'], [16, 'obstruct'], [18, 'closed']]}, ['done', 'reopen', 'reopen', 'reopen', 'done'])], [('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 72', {'events': [[12, 'obstruct'], [14, 'obstruct'], [15, 'unblock'], [20, 'obstruct'], [32, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 45', {'events': [[5, 'edge'], [17, 'closed'], [22, 'obstruct'], [24, 'closed']]}, ['reopen', 'done', 'reopen', 'done']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('control 51', {'events': [[8, 'closed'], [9, 'closed'], [14, 'obstruct'], [26, 'closed'], [38, 'obstruct']]}, ['done', 'done', 'reopen', 'done', 'reopen'])]]\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"},"fixed":{"sha256":"50ef08450272a33d524f062f94f8e6b05a4ce7b3f17e787d89a161763993adc4","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    count = 0\n    nudge = False\n    block_start = None\n    out = []\n    for t, ev in x['events']:\n        if ev == 'obstruct':\n            if block_start is None:\n                block_start = t\n            if nudge:\n                out.append('ignored')\n            else:\n                count += 1\n                if count >= 3 or t - block_start >= 20:\n                    nudge = True\n                    out.append('nudge')\n                else:\n                    out.append('reopen')\n        elif ev == 'unblock':\n            block_start = None\n        elif ev == 'edge':\n            out.append('reopen')\n        elif ev == 'closed':\n            count = 0\n            nudge = False\n            block_start = None\n            out.append('done')\n    return out\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 4', {'events': [[5, 'edge'], [10, 'unblock'], [11, 'obstruct'], [19, 'closed']]}, ['reopen', 'reopen', 'done']), ('control 7', {'events': [[2, 'unblock'], [10, 'edge'], [18, 'obstruct'], [23, 'unblock'], [28, 'edge'], [33, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 10', {'events': [[8, 'edge'], [13, 'obstruct'], [18, 'edge'], [30, 'unblock'], [35, 'obstruct'], [40, 'obstruct'], [42, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge'])], [('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 17', {'events': [[5, 'unblock'], [13, 'unblock'], [14, 'closed'], [26, 'obstruct'], [34, 'edge'], [36, 'obstruct'], [48, 'unblock'], [60, 'obstruct'], [72, 'unblock']]}, ['done', 'reopen', 'reopen', 'reopen', 'nudge']), ('sampled regression 13', {'events': [[5, 'unblock'], [13, 'obstruct'], [21, 'closed'], [29, 'edge'], [34, 'obstruct'], [46, 'obstruct'], [47, 'unblock'], [55, 'obstruct'], [63, 'closed'], [64, 'unblock']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'done']), ('boundary: new cycle after closing', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct'], [5, 'unblock']]}, ['reopen', 'reopen', 'done', 'reopen']), ('control 12', {'events': [[5, 'obstruct'], [13, 'edge'], [15, 'unblock'], [16, 'obstruct'], [21, 'unblock'], [22, 'edge'], [30, 'closed'], [32, 'obstruct'], [44, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen']), ('sampled regression 15', {'events': [[8, 'obstruct'], [9, 'obstruct'], [10, 'obstruct'], [11, 'unblock'], [16, 'obstruct'], [24, 'obstruct'], [29, 'edge']]}, ['reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'reopen']), ('sampled regression 18', {'events': [[12, 'obstruct'], [20, 'obstruct'], [22, 'obstruct']]}, ['reopen', 'reopen', 'nudge'])], [('regression: curtain broken then blocked again', {'events': [[0, 'obstruct'], [5, 'unblock'], [15, 'obstruct'], [26, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 28', {'events': [[12, 'unblock'], [20, 'edge'], [32, 'edge'], [33, 'obstruct'], [35, 'obstruct'], [40, 'obstruct'], [41, 'obstruct'], [53, 'obstruct'], [58, 'closed']]}, ['reopen', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'done']), ('control 29', {'events': [[8, 'edge'], [10, 'obstruct'], [12, 'obstruct'], [20, 'closed']]}, ['reopen', 'reopen', 'reopen', 'done']), ('boundary: curtain held for twenty seconds', {'events': [[0, 'obstruct'], [20, 'obstruct']]}, ['reopen', 'nudge']), ('control 23', {'events': [[1, 'unblock'], [6, 'unblock'], [18, 'obstruct'], [30, 'closed']]}, ['reopen', 'done']), ('sampled regression 26', {'events': [[12, 'closed'], [13, 'closed'], [15, 'obstruct'], [17, 'obstruct'], [19, 'obstruct']]}, ['done', 'done', 'reopen', 'reopen', 'nudge']), ('sampled regression 32', {'events': [[8, 'closed'], [13, 'unblock'], [15, 'obstruct'], [16, 'obstruct'], [17, 'obstruct'], [19, 'unblock'], [31, 'obstruct'], [36, 'obstruct']]}, ['done', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored'])], [('regression: closing clears nudging', {'events': [[0, 'obstruct'], [1, 'obstruct'], [2, 'obstruct'], [3, 'closed'], [4, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'done', 'reopen']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 64', {'events': [[8, 'obstruct'], [13, 'edge'], [18, 'unblock'], [26, 'unblock'], [34, 'obstruct'], [36, 'obstruct']]}, ['reopen', 'reopen', 'reopen', 'nudge']), ('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('sampled regression 34', {'events': [[8, 'edge'], [16, 'obstruct'], [24, 'obstruct'], [36, 'closed'], [48, 'obstruct'], [60, 'obstruct'], [62, 'obstruct'], [64, 'unblock'], [72, 'obstruct'], [80, 'unblock']]}, ['reopen', 'reopen', 'reopen', 'done', 'reopen', 'reopen', 'nudge', 'ignored']), ('control 37', {'events': [[2, 'closed'], [4, 'closed'], [9, 'obstruct'], [21, 'edge']]}, ['done', 'done', 'reopen', 'reopen']), ('control 40', {'events': [[2, 'closed'], [7, 'obstruct'], [15, 'edge'], [16, 'obstruct'], [18, 'closed']]}, ['done', 'reopen', 'reopen', 'reopen', 'done'])], [('regression: third obstruction', {'events': [[1, 'obstruct'], [2, 'unblock'], [3, 'obstruct'], [4, 'unblock'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge']), ('boundary: edge contacts do not count', {'events': [[1, 'obstruct'], [2, 'edge'], [3, 'unblock'], [4, 'obstruct'], [5, 'edge']]}, ['reopen', 'reopen', 'reopen', 'reopen']), ('sampled regression 72', {'events': [[12, 'obstruct'], [14, 'obstruct'], [15, 'unblock'], [20, 'obstruct'], [32, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('sampled regression 1', {'events': [[8, 'obstruct'], [13, 'closed'], [18, 'obstruct'], [26, 'edge'], [28, 'obstruct'], [29, 'obstruct'], [41, 'obstruct'], [42, 'obstruct'], [54, 'obstruct'], [66, 'closed']]}, ['reopen', 'done', 'reopen', 'reopen', 'reopen', 'nudge', 'ignored', 'ignored', 'ignored', 'done']), ('regression: safety edge while nudging', {'events': [[1, 'obstruct'], [2, 'obstruct'], [3, 'obstruct'], [4, 'edge'], [5, 'obstruct']]}, ['reopen', 'reopen', 'nudge', 'reopen', 'ignored']), ('control 45', {'events': [[5, 'edge'], [17, 'closed'], [22, 'obstruct'], [24, 'closed']]}, ['reopen', 'done', 'reopen', 'done']), ('sampled regression 48', {'events': [[2, 'obstruct'], [7, 'obstruct'], [15, 'obstruct'], [27, 'obstruct'], [35, 'unblock']]}, ['reopen', 'reopen', 'nudge', 'ignored']), ('control 51', {'events': [[8, 'closed'], [9, 'closed'], [14, 'obstruct'], [26, 'closed'], [38, 'obstruct']]}, ['done', 'done', 'reopen', 'done', 'reopen'])]]\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-door-obstruction-nudging-reopen-limit","generated_at":"2026-09-29T14:47:54.670933+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.","repair":"Start nudging on the third curtain obstruction.","root_cause":"Nudging starts only on the fourth obstruction.","sha256":"f4554cba986d6d2e74cb03a369ba8d32b87bdf242f310bd3da90f7012dcea56a","title":"Door obstruction reopen and nudging: reopen limit · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":39.178,"exit_code":1,"observations":[{"actual":["reopen","reopen","nudge"],"check":"regression: third obstruction","expected":["reopen","reopen","nudge"],"passed":true},{"actual":["reopen","reopen","nudge","reopen"],"check":"boundary: edge contacts do not count","expected":["reopen","reopen","reopen","reopen"],"passed":false},{"actual":["reopen","reopen","nudge","done","reopen"],"check":"regression: closing clears nudging","expected":["reopen","reopen","nudge","done","reopen"],"passed":true},{"actual":["reopen","done","reopen","reopen","nudge","ignored","ignored","ignored","ignored","done"],"check":"sampled regression 1","expected":["reopen","done","reopen","reopen","reopen","nudge","ignored","ignored","ignored","done"],"passed":false},{"actual":["reopen","reopen","nudge","reopen","ignored"],"check":"regression: safety edge while nudging","expected":["reopen","reopen","nudge","reopen","ignored"],"passed":true},{"actual":["reopen","reopen","done"],"check":"control 4","expected":["reopen","reopen","done"],"passed":true},{"actual":["reopen","reopen","reopen","nudge"],"check":"control 7","expected":["reopen","reopen","reopen","reopen"],"passed":false},{"actual":["reopen","reopen","reopen","nudge","ignored"],"check":"sampled regression 10","expected":["reopen","reopen","reopen","reopen","nudge"],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: third obstruction\", \"actual\": [\"reopen\", \"reopen\", \"nudge\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\"], \"passed\": true}, {\"check\": \"boundary: edge contacts do not count\", \"actual\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": false}, {\"check\": \"regression: closing clears nudging\", \"actual\": [\"reopen\", \"reopen\", \"nudge\", \"done\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"done\", \"reopen\"], \"passed\": true}, {\"check\": \"sampled regression 1\", \"actual\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"ignored\", \"ignored\", \"done\"], \"expected\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"ignored\", \"done\"], \"passed\": false}, {\"check\": \"regression: safety edge while nudging\", \"actual\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\", \"ignored\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\", \"ignored\"], \"passed\": true}, {\"check\": \"control 4\", \"actual\": [\"reopen\", \"reopen\", \"done\"], \"expected\": [\"reopen\", \"reopen\", \"done\"], \"passed\": true}, {\"check\": \"control 7\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": false}, {\"check\": \"sampled regression 10\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.365,"exit_code":1,"observations":[{"actual":["reopen","reopen","reopen"],"check":"regression: third obstruction","expected":["reopen","reopen","nudge"],"passed":false},{"actual":["reopen","reopen","reopen","reopen"],"check":"boundary: edge contacts do not count","expected":["reopen","reopen","reopen","reopen"],"passed":true},{"actual":["reopen","reopen","reopen","done","reopen"],"check":"regression: closing clears nudging","expected":["reopen","reopen","nudge","done","reopen"],"passed":false},{"actual":["reopen","done","reopen","reopen","reopen","reopen","nudge","ignored","ignored","done"],"check":"sampled regression 1","expected":["reopen","done","reopen","reopen","reopen","nudge","ignored","ignored","ignored","done"],"passed":false},{"actual":["reopen","reopen","reopen","reopen","nudge"],"check":"regression: safety edge while nudging","expected":["reopen","reopen","nudge","reopen","ignored"],"passed":false},{"actual":["reopen","reopen","done"],"check":"control 4","expected":["reopen","reopen","done"],"passed":true},{"actual":["reopen","reopen","reopen","reopen"],"check":"control 7","expected":["reopen","reopen","reopen","reopen"],"passed":true},{"actual":["reopen","reopen","reopen","reopen","reopen"],"check":"sampled regression 10","expected":["reopen","reopen","reopen","reopen","nudge"],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: third obstruction\", \"actual\": [\"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\"], \"passed\": false}, {\"check\": \"boundary: edge contacts do not count\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": true}, {\"check\": \"regression: closing clears nudging\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"done\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"done\", \"reopen\"], \"passed\": false}, {\"check\": \"sampled regression 1\", \"actual\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"done\"], \"expected\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"ignored\", \"done\"], \"passed\": false}, {\"check\": \"regression: safety edge while nudging\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\", \"ignored\"], \"passed\": false}, {\"check\": \"control 4\", \"actual\": [\"reopen\", \"reopen\", \"done\"], \"expected\": [\"reopen\", \"reopen\", \"done\"], \"passed\": true}, {\"check\": \"control 7\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": true}, {\"check\": \"sampled regression 10\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":39.162,"exit_code":0,"observations":[{"actual":["reopen","reopen","nudge"],"check":"regression: third obstruction","expected":["reopen","reopen","nudge"],"passed":true},{"actual":["reopen","reopen","reopen","reopen"],"check":"boundary: edge contacts do not count","expected":["reopen","reopen","reopen","reopen"],"passed":true},{"actual":["reopen","reopen","nudge","done","reopen"],"check":"regression: closing clears nudging","expected":["reopen","reopen","nudge","done","reopen"],"passed":true},{"actual":["reopen","done","reopen","reopen","reopen","nudge","ignored","ignored","ignored","done"],"check":"sampled regression 1","expected":["reopen","done","reopen","reopen","reopen","nudge","ignored","ignored","ignored","done"],"passed":true},{"actual":["reopen","reopen","nudge","reopen","ignored"],"check":"regression: safety edge while nudging","expected":["reopen","reopen","nudge","reopen","ignored"],"passed":true},{"actual":["reopen","reopen","done"],"check":"control 4","expected":["reopen","reopen","done"],"passed":true},{"actual":["reopen","reopen","reopen","reopen"],"check":"control 7","expected":["reopen","reopen","reopen","reopen"],"passed":true},{"actual":["reopen","reopen","reopen","reopen","nudge"],"check":"sampled regression 10","expected":["reopen","reopen","reopen","reopen","nudge"],"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"regression: third obstruction\", \"actual\": [\"reopen\", \"reopen\", \"nudge\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\"], \"passed\": true}, {\"check\": \"boundary: edge contacts do not count\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": true}, {\"check\": \"regression: closing clears nudging\", \"actual\": [\"reopen\", \"reopen\", \"nudge\", \"done\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"done\", \"reopen\"], \"passed\": true}, {\"check\": \"sampled regression 1\", \"actual\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"ignored\", \"done\"], \"expected\": [\"reopen\", \"done\", \"reopen\", \"reopen\", \"reopen\", \"nudge\", \"ignored\", \"ignored\", \"ignored\", \"done\"], \"passed\": true}, {\"check\": \"regression: safety edge while nudging\", \"actual\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\", \"ignored\"], \"expected\": [\"reopen\", \"reopen\", \"nudge\", \"reopen\", \"ignored\"], \"passed\": true}, {\"check\": \"control 4\", \"actual\": [\"reopen\", \"reopen\", \"done\"], \"expected\": [\"reopen\", \"reopen\", \"done\"], \"passed\": true}, {\"check\": \"control 7\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\"], \"passed\": true}, {\"check\": \"sampled regression 10\", \"actual\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"expected\": [\"reopen\", \"reopen\", \"reopen\", \"reopen\", \"nudge\"], \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}