{"abstract":"Quiet-period close ignores a newer last-bid grace obligation.","category":"Auction allocation rules","checks":10,"contract":"Toy soft-close auction scheduling uses integer ticks. Only eligible bids in the final extension window extend close, extending from the later existing deadline, with a fixed hard stop and a finite extension count. A batch carries submission and admission times separately. Named decision quiet-period-close: For quiet period close, apply the stipulated decision max(x[\"close\"],x[\"last_bid\"]+x[\"grace\"]).","contract_signature":"x","evaluation_group":"s3-auction-soft-close","failed_approach":"The attempted repair uses x[\"close\"]; the explicit regression cases demonstrate that this still violates the stipulated auction rule.","family":"s3-auction-allocation-rules-soft-close-quiet-period-close","id":"FA-56726","implementations":{"attempt":{"sha256":"3fb3d9e9cb3a22560f88a364cbdce7b44b6634823c9bcf85b9ca47de7789d8e7","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    v0 = x[\"close\"]-x[\"window\"]<=x[\"now\"]<x[\"close\"]\n    v1 = max(x[\"close\"],x[\"now\"]+x[\"extension\"])\n    v2 = min(x[\"hard_stop\"],x[\"close\"]+x[\"extension\"])\n    v3 = x[\"close\"]+x[\"extension\"] if x[\"eligible\"] and not x[\"withdrawn\"] else x[\"close\"]\n    v4 = x[\"count\"]<x[\"max_count\"]\n    v5 = x[\"submitted\"]<x[\"close\"]\n    v6 = min(x[\"hard_stop\"],x[\"close\"]+x[\"pause_length\"]) if x[\"paused\"] else x[\"close\"]\n    v7 = x[\"close\"]\n    v8 = len(set(x[\"batch_times\"])-set(x[\"seen_times\"]))\n    v9 = not x[\"paused\"] and x[\"now\"]>=x[\"close\"]\n    return {'extension-window':v0,'extension-base':v1,'hard-stop-cap':v2,'eligible-bid-extension':v3,'extension-budget':v4,'timely-submission':v5,'paused-deadline':v6,'quiet-period-close':v7,'new-batch-extensions':v8,'paused-close-event':v9}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [('normal contract', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('submission exactly closing', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 20, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('quiet grace extends close', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 19, 'grace': 4, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [23, 46, 69, 92, 115]), ('submission exactly closing / quiet grace extends close', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 20, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 19, 'grace': 4, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [23, 46, 69, 92, 115]), ('early bid', {'close': 20, 'now': 10, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('at deadline', {'close': 20, 'now': 20, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('past deadline', {'close': 20, 'now': 21, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('ineligible bid', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': False, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('hard stop near', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 22, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('no extensions left', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 3, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100])]\ndef vary(value):\n if type(value) is int: return value*N\n if isinstance(value,list): return [vary(v) for v in value]\n if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'max_count', 'maximum_set', 'minimum_set', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}\n return value\nfor label, request, expected in fixtures:\n check(label, solve(vary(request))['quiet-period-close'], expected[N-1])\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":"02be54f2901115d7abe217d7f3f1da992ce77e9e51ead9a02d649904f43b520b","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(x):\n    v0 = x[\"close\"]-x[\"window\"]<=x[\"now\"]<x[\"close\"]\n    v1 = max(x[\"close\"],x[\"now\"]+x[\"extension\"])\n    v2 = min(x[\"hard_stop\"],x[\"close\"]+x[\"extension\"])\n    v3 = x[\"close\"]+x[\"extension\"] if x[\"eligible\"] and not x[\"withdrawn\"] else x[\"close\"]\n    v4 = x[\"count\"]<x[\"max_count\"]\n    v5 = x[\"submitted\"]<x[\"close\"]\n    v6 = min(x[\"hard_stop\"],x[\"close\"]+x[\"pause_length\"]) if x[\"paused\"] else x[\"close\"]\n    v7 = x[\"last_bid\"]+x[\"grace\"]\n    v8 = len(set(x[\"batch_times\"])-set(x[\"seen_times\"]))\n    v9 = not x[\"paused\"] and x[\"now\"]>=x[\"close\"]\n    return {'extension-window':v0,'extension-base':v1,'hard-stop-cap':v2,'eligible-bid-extension':v3,'extension-budget':v4,'timely-submission':v5,'paused-deadline':v6,'quiet-period-close':v7,'new-batch-extensions':v8,'paused-close-event':v9}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [('normal contract', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('submission exactly closing', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 20, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('quiet grace extends close', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 19, 'grace': 4, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [23, 46, 69, 92, 115]), ('submission exactly closing / quiet grace extends close', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 20, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 19, 'grace': 4, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [23, 46, 69, 92, 115]), ('early bid', {'close': 20, 'now': 10, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('at deadline', {'close': 20, 'now': 20, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('past deadline', {'close': 20, 'now': 21, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('ineligible bid', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 1, 'max_count': 3, 'eligible': False, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('hard stop near', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 22, 'count': 1, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100]), ('no extensions left', {'close': 20, 'now': 18, 'window': 3, 'extension': 5, 'hard_stop': 30, 'count': 3, 'max_count': 3, 'eligible': True, 'submitted': 19, 'admitted': 21, 'paused': False, 'pause_length': 4, 'last_bid': 15, 'grace': 2, 'withdrawn': False, 'batch_times': [17, 19], 'seen_times': [17]}, [20, 40, 60, 80, 100])]\ndef vary(value):\n if type(value) is int: return value*N\n if isinstance(value,list): return [vary(v) for v in value]\n if isinstance(value,dict): return {k:(v if k in ['count', 'delivery_index', 'disputed', 'max_count', 'maximum_set', 'minimum_set', 'stage', 'threshold', 'waived'] else vary(v)) for k,v in value.items()}\n return value\nfor label, request, expected in fixtures:\n check(label, solve(vary(request))['quiet-period-close'], expected[N-1])\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 auction rules, not a venue specification, financial advice, optimization claim, or live trading implementation. Nonnegative integer inputs and internally aligned list fields only. 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":"s3-auction-allocation-rules-soft-close-quiet-period-close","generated_at":"2026-09-29T14:46:09.902325+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Offline administrative auction model for software failure analysis.","root_cause":"Quiet-period close ignores a newer last-bid grace obligation.","sha256":"9e0671512abe562dde7349aa3a1e578cf77cfc90c5fb8f7cd23b6af6451202a1","title":"Soft close: quiet period close · 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":40.098,"exit_code":1,"observations":[{"actual":20,"check":"normal contract","expected":20,"passed":true},{"actual":20,"check":"submission exactly closing","expected":20,"passed":true},{"actual":20,"check":"quiet grace extends close","expected":23,"passed":false},{"actual":20,"check":"submission exactly closing / quiet grace extends close","expected":23,"passed":false},{"actual":20,"check":"early bid","expected":20,"passed":true},{"actual":20,"check":"at deadline","expected":20,"passed":true},{"actual":20,"check":"past deadline","expected":20,"passed":true},{"actual":20,"check":"ineligible bid","expected":20,"passed":true},{"actual":20,"check":"hard stop near","expected":20,"passed":true},{"actual":20,"check":"no extensions left","expected":20,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"normal contract\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"submission exactly closing\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"quiet grace extends close\", \"actual\": 20, \"expected\": 23, \"passed\": false}, {\"check\": \"submission exactly closing / quiet grace extends close\", \"actual\": 20, \"expected\": 23, \"passed\": false}, {\"check\": \"early bid\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"at deadline\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"past deadline\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"ineligible bid\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"hard stop near\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"no extensions left\", \"actual\": 20, \"expected\": 20, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":42.025,"exit_code":1,"observations":[{"actual":17,"check":"normal contract","expected":20,"passed":false},{"actual":17,"check":"submission exactly closing","expected":20,"passed":false},{"actual":23,"check":"quiet grace extends close","expected":23,"passed":true},{"actual":23,"check":"submission exactly closing / quiet grace extends close","expected":23,"passed":true},{"actual":17,"check":"early bid","expected":20,"passed":false},{"actual":17,"check":"at deadline","expected":20,"passed":false},{"actual":17,"check":"past deadline","expected":20,"passed":false},{"actual":17,"check":"ineligible bid","expected":20,"passed":false},{"actual":17,"check":"hard stop near","expected":20,"passed":false},{"actual":17,"check":"no extensions left","expected":20,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"normal contract\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"submission exactly closing\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"quiet grace extends close\", \"actual\": 23, \"expected\": 23, \"passed\": true}, {\"check\": \"submission exactly closing / quiet grace extends close\", \"actual\": 23, \"expected\": 23, \"passed\": true}, {\"check\": \"early bid\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"at deadline\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"past deadline\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"ineligible bid\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"hard stop near\", \"actual\": 17, \"expected\": 20, \"passed\": false}, {\"check\": \"no extensions left\", \"actual\": 17, \"expected\": 20, \"passed\": false}], \"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."}}