{"abstract":"Which of two equally urgent vehicles charges depends on list order.","category":"EV charging session scheduling","checks":7,"contract":"fleet is [[id, need_units, depart_slot, max_units_per_slot]]. A vehicle is present in slots t < depart_slot. Each slot the site capacity site_units is granted in order of laxity (depart_slot - t - ceil(remaining/max_units)) ascending, ties by id; each vehicle gets min(max, remaining, capacity left). Return [[[id, remaining]] sorted by id, sorted ids with remaining > 0].","contract_signature":"fleet, site_units, slots","evaluation_group":"w2-ev_charging_session_scheduling-depot-least-laxity","failed_approach":"Breaking ties by departure still leaves same-departure ties in list order.","family":"w2-ev_charging_session_scheduling-depot-least-laxity-equal-laxity-tie-break","id":"FA-93116","implementations":{"attempt":{"sha256":"889915e064b5cf797867dd3373e0b37f6f0bdd851bcc6a4f0aad715c02dd32b0","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(fleet, site_units, slots):\n    rem = {v[0]: v[1] for v in fleet}\n    for t in range(slots):\n        present = [v for v in fleet if v[2] > t and rem[v[0]] > 0]\n        def lax(v):\n            need_slots = -(-rem[v[0]] // v[3])\n            return (v[2] - t) - need_slots\n        present.sort(key=lambda v: (lax(v), v[2]))\n        cap = site_units\n        for v in present:\n            give = min(v[3], rem[v[0]], cap)\n            rem[v[0]] -= give\n            cap -= give\n            if cap == 0:\n                break\n    missed = sorted(v[0] for v in fleet if rem[v[0]] > 0)\n    return [[[k, rem[k]] for k in sorted(rem)], missed]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B2', 4, 8, 3], ['B0', 4, 7, 4], ['B1', 12, 4, 3]], 4, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['B2']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B2', 7, 6, 4], ['B0', 7, 5, 1], ['B1', 7, 1, 3]], 2, 5],\n   [[['B0', 2], ['B1', 6], ['B2', 3]], ['B0', 'B1', 'B2']]],\n  ['control 1', [[['B0', 4, 10, 3], ['B1', 4, 9, 3], ['B2', 1, 7, 3]], 7, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0]], []]],\n  ['control 2', [[['B0', 1, 9, 4], ['B1', 13, 10, 4]], 7, 6], [[['B0', 0], ['B1', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B2', 6, 3, 3], ['B0', 7, 10, 1], ['B3', 8, 1, 4], ['B4', 11, 10, 3], ['B1', 12, 4, 3]], 5,\n    7],\n   [[['B0', 3], ['B1', 2], ['B2', 2], ['B3', 4], ['B4', 1]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B0', 3, 5, 4], ['B1', 9, 3, 1], ['B2', 14, 7, 2], ['B3', 9, 6, 4], ['B4', 11, 5, 2]], 5, 5],\n   [[['B0', 0], ['B1', 6], ['B2', 6], ['B3', 8], ['B4', 1]], ['B1', 'B2', 'B3', 'B4']]],\n  ['control 1', [[['B1', 9, 10, 4], ['B3', 1, 1, 4], ['B0', 4, 10, 3], ['B2', 6, 10, 3]], 6, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['control 2', [[['B0', 3, 6, 1]], 7, 10], [[['B0', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break', [[['B1', 7, 4, 3], ['B0', 14, 6, 2]], 3, 6],\n   [[['B0', 2], ['B1', 3]], ['B0', 'B1']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B1', 13, 3, 4], ['B0', 4, 6, 4], ['B2', 3, 1, 2]], 5, 9],\n   [[['B0', 0], ['B1', 1], ['B2', 2]], ['B1', 'B2']]],\n  ['control 1', [[['B1', 10, 10, 4], ['B2', 9, 9, 4], ['B0', 9, 4, 1]], 6, 9],\n   [[['B0', 5], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['control 2', [[['B0', 11, 5, 1]], 6, 4], [[['B0', 7]], ['B0']]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B0', 5, 9, 1], ['B2', 9, 6, 3], ['B1', 10, 7, 4]], 4, 6],\n   [[['B0', 1], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B1', 8, 4, 3], ['B0', 13, 7, 2], ['B2', 4, 7, 4]], 4, 5],\n   [[['B0', 3], ['B1', 0], ['B2', 2]], ['B0', 'B2']]],\n  ['control 1', [[['B2', 2, 6, 3], ['B1', 0, 4, 3], ['B0', 10, 8, 1]], 2, 9],\n   [[['B0', 2], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['control 2', [[['B2', 11, 5, 4], ['B0', 8, 10, 3], ['B1', 5, 5, 4]], 6, 9],\n   [[['B0', 0], ['B1', 0], ['B2', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B0', 10, 8, 2], ['B1', 1, 2, 2], ['B2', 13, 3, 4], ['B4', 9, 8, 1], ['B3', 11, 8, 3]], 2,\n    10],\n   [[['B0', 6], ['B1', 1], ['B2', 8], ['B3', 9], ['B4', 4]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B2', 7, 2, 4], ['B0', 5, 3, 3], ['B1', 9, 8, 1], ['B4', 14, 4, 3], ['B3', 13, 5, 1]], 5, 5],\n   [[['B0', 4], ['B1', 5], ['B2', 4], ['B3', 8], ['B4', 5]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['control 1', [[['B0', 14, 4, 4], ['B2', 2, 9, 3], ['B3', 2, 10, 2], ['B1', 6, 6, 4]], 8, 9],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['control 2', [[['B1', 10, 5, 4], ['B0', 14, 10, 4], ['B2', 9, 3, 3], ['B3', 8, 10, 2]], 6, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 1]], ['B3']]]]]\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":"5443bae7bf6536e990edfefab7e86c5058230ad237a313bd56430703f5014e32","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(fleet, site_units, slots):\n    rem = {v[0]: v[1] for v in fleet}\n    for t in range(slots):\n        present = [v for v in fleet if v[2] > t and rem[v[0]] > 0]\n        def lax(v):\n            need_slots = -(-rem[v[0]] // v[3])\n            return (v[2] - t) - need_slots\n        present.sort(key=lambda v: (lax(v),))\n        cap = site_units\n        for v in present:\n            give = min(v[3], rem[v[0]], cap)\n            rem[v[0]] -= give\n            cap -= give\n            if cap == 0:\n                break\n    missed = sorted(v[0] for v in fleet if rem[v[0]] > 0)\n    return [[[k, rem[k]] for k in sorted(rem)], missed]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nfixtures = [[['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B2', 4, 8, 3], ['B0', 4, 7, 4], ['B1', 12, 4, 3]], 4, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['B2']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B2', 7, 6, 4], ['B0', 7, 5, 1], ['B1', 7, 1, 3]], 2, 5],\n   [[['B0', 2], ['B1', 6], ['B2', 3]], ['B0', 'B1', 'B2']]],\n  ['control 1', [[['B0', 4, 10, 3], ['B1', 4, 9, 3], ['B2', 1, 7, 3]], 7, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0]], []]],\n  ['control 2', [[['B0', 1, 9, 4], ['B1', 13, 10, 4]], 7, 6], [[['B0', 0], ['B1', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B2', 6, 3, 3], ['B0', 7, 10, 1], ['B3', 8, 1, 4], ['B4', 11, 10, 3], ['B1', 12, 4, 3]], 5,\n    7],\n   [[['B0', 3], ['B1', 2], ['B2', 2], ['B3', 4], ['B4', 1]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B0', 3, 5, 4], ['B1', 9, 3, 1], ['B2', 14, 7, 2], ['B3', 9, 6, 4], ['B4', 11, 5, 2]], 5, 5],\n   [[['B0', 0], ['B1', 6], ['B2', 6], ['B3', 8], ['B4', 1]], ['B1', 'B2', 'B3', 'B4']]],\n  ['control 1', [[['B1', 9, 10, 4], ['B3', 1, 1, 4], ['B0', 4, 10, 3], ['B2', 6, 10, 3]], 6, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['control 2', [[['B0', 3, 6, 1]], 7, 10], [[['B0', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break', [[['B1', 7, 4, 3], ['B0', 14, 6, 2]], 3, 6],\n   [[['B0', 2], ['B1', 3]], ['B0', 'B1']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B1', 13, 3, 4], ['B0', 4, 6, 4], ['B2', 3, 1, 2]], 5, 9],\n   [[['B0', 0], ['B1', 1], ['B2', 2]], ['B1', 'B2']]],\n  ['control 1', [[['B1', 10, 10, 4], ['B2', 9, 9, 4], ['B0', 9, 4, 1]], 6, 9],\n   [[['B0', 5], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['control 2', [[['B0', 11, 5, 1]], 6, 4], [[['B0', 7]], ['B0']]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B0', 5, 9, 1], ['B2', 9, 6, 3], ['B1', 10, 7, 4]], 4, 6],\n   [[['B0', 1], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B1', 8, 4, 3], ['B0', 13, 7, 2], ['B2', 4, 7, 4]], 4, 5],\n   [[['B0', 3], ['B1', 0], ['B2', 2]], ['B0', 'B2']]],\n  ['control 1', [[['B2', 2, 6, 3], ['B1', 0, 4, 3], ['B0', 10, 8, 1]], 2, 9],\n   [[['B0', 2], ['B1', 0], ['B2', 0]], ['B0']]],\n  ['control 2', [[['B2', 11, 5, 4], ['B0', 8, 10, 3], ['B1', 5, 5, 4]], 6, 9],\n   [[['B0', 0], ['B1', 0], ['B2', 0]], []]]],\n [['boundary: departs at slot 1', [[['A', 4, 1, 2], ['B', 2, 5, 2]], 2, 3],\n   [[['A', 2], ['B', 0]], ['A']]],\n  ['boundary: exact capacity fit', [[['A', 2, 2, 1], ['B', 2, 2, 1]], 2, 3],\n   [[['A', 0], ['B', 0]], []]],\n  ['boundary: empty fleet', [[], 5, 3], [[], []]],\n  ['regression: equal-laxity tie-break',\n   [[['B0', 10, 8, 2], ['B1', 1, 2, 2], ['B2', 13, 3, 4], ['B4', 9, 8, 1], ['B3', 11, 8, 3]], 2,\n    10],\n   [[['B0', 6], ['B1', 1], ['B2', 8], ['B3', 9], ['B4', 4]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['regression: equal-laxity tie-break (partial repair)',\n   [[['B2', 7, 2, 4], ['B0', 5, 3, 3], ['B1', 9, 8, 1], ['B4', 14, 4, 3], ['B3', 13, 5, 1]], 5, 5],\n   [[['B0', 4], ['B1', 5], ['B2', 4], ['B3', 8], ['B4', 5]], ['B0', 'B1', 'B2', 'B3', 'B4']]],\n  ['control 1', [[['B0', 14, 4, 4], ['B2', 2, 9, 3], ['B3', 2, 10, 2], ['B1', 6, 6, 4]], 8, 9],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['control 2', [[['B1', 10, 5, 4], ['B0', 14, 10, 4], ['B2', 9, 3, 3], ['B3', 8, 10, 2]], 6, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 1]], ['B3']]]]]\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":"Deterministic stipulated toy contract for teaching; no claim of conformance with any standard, vendor protocol or production controller. 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-ev_charging_session_scheduling-depot-least-laxity-equal-laxity-tie-break","generated_at":"2026-09-29T14:51:52.313907+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Depot, workplace and public EV chargers schedule sessions against prices, circuit limits and departure deadlines; a wrong decision silently strands a driver or overloads a feeder.","root_cause":"Equal laxity is not tie-broken by id, so the input order leaks into the schedule.","sha256":"439a3f896ffcc652bcc5a6c7929425233ccea5ffc727e06d667354c4f79c1a05","title":"Depot least-laxity-first charging: equal-laxity tie-break · 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":48.086,"exit_code":1,"observations":[{"actual":[[["A",2],["B",0]],["A"]],"check":"boundary: departs at slot 1","expected":[[["A",2],["B",0]],["A"]],"passed":true},{"actual":[[["A",0],["B",0]],[]],"check":"boundary: exact capacity fit","expected":[[["A",0],["B",0]],[]],"passed":true},{"actual":[[],[]],"check":"boundary: empty fleet","expected":[[],[]],"passed":true},{"actual":[[["B0",0],["B1",0],["B2",4]],["B2"]],"check":"regression: equal-laxity tie-break","expected":[[["B0",0],["B1",0],["B2",4]],["B2"]],"passed":true},{"actual":[[["B0",3],["B1",5],["B2",3]],["B0","B1","B2"]],"check":"regression: equal-laxity tie-break (partial repair)","expected":[[["B0",2],["B1",6],["B2",3]],["B0","B1","B2"]],"passed":false},{"actual":[[["B0",0],["B1",0],["B2",0]],[]],"check":"control 1","expected":[[["B0",0],["B1",0],["B2",0]],[]],"passed":true},{"actual":[[["B0",0],["B1",0]],[]],"check":"control 2","expected":[[["B0",0],["B1",0]],[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary: departs at slot 1\", \"actual\": [[[\"A\", 2], [\"B\", 0]], [\"A\"]], \"expected\": [[[\"A\", 2], [\"B\", 0]], [\"A\"]], \"passed\": true}, {\"check\": \"boundary: exact capacity fit\", \"actual\": [[[\"A\", 0], [\"B\", 0]], []], \"expected\": [[[\"A\", 0], [\"B\", 0]], []], \"passed\": true}, {\"check\": \"boundary: empty fleet\", \"actual\": [[], []], \"expected\": [[], []], \"passed\": true}, {\"check\": \"regression: equal-laxity tie-break\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"passed\": true}, {\"check\": \"regression: equal-laxity tie-break (partial repair)\", \"actual\": [[[\"B0\", 3], [\"B1\", 5], [\"B2\", 3]], [\"B0\", \"B1\", \"B2\"]], \"expected\": [[[\"B0\", 2], [\"B1\", 6], [\"B2\", 3]], [\"B0\", \"B1\", \"B2\"]], \"passed\": false}, {\"check\": \"control 1\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0]], []], \"passed\": true}, {\"check\": \"control 2\", \"actual\": [[[\"B0\", 0], [\"B1\", 0]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0]], []], \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":41.121,"exit_code":1,"observations":[{"actual":[[["A",2],["B",0]],["A"]],"check":"boundary: departs at slot 1","expected":[[["A",2],["B",0]],["A"]],"passed":true},{"actual":[[["A",0],["B",0]],[]],"check":"boundary: exact capacity fit","expected":[[["A",0],["B",0]],[]],"passed":true},{"actual":[[],[]],"check":"boundary: empty fleet","expected":[[],[]],"passed":true},{"actual":[[["B0",1],["B1",0],["B2",3]],["B0","B2"]],"check":"regression: equal-laxity tie-break","expected":[[["B0",0],["B1",0],["B2",4]],["B2"]],"passed":false},{"actual":[[["B0",2],["B1",6],["B2",3]],["B0","B1","B2"]],"check":"regression: equal-laxity tie-break (partial repair)","expected":[[["B0",2],["B1",6],["B2",3]],["B0","B1","B2"]],"passed":true},{"actual":[[["B0",0],["B1",0],["B2",0]],[]],"check":"control 1","expected":[[["B0",0],["B1",0],["B2",0]],[]],"passed":true},{"actual":[[["B0",0],["B1",0]],[]],"check":"control 2","expected":[[["B0",0],["B1",0]],[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary: departs at slot 1\", \"actual\": [[[\"A\", 2], [\"B\", 0]], [\"A\"]], \"expected\": [[[\"A\", 2], [\"B\", 0]], [\"A\"]], \"passed\": true}, {\"check\": \"boundary: exact capacity fit\", \"actual\": [[[\"A\", 0], [\"B\", 0]], []], \"expected\": [[[\"A\", 0], [\"B\", 0]], []], \"passed\": true}, {\"check\": \"boundary: empty fleet\", \"actual\": [[], []], \"expected\": [[], []], \"passed\": true}, {\"check\": \"regression: equal-laxity tie-break\", \"actual\": [[[\"B0\", 1], [\"B1\", 0], [\"B2\", 3]], [\"B0\", \"B2\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"passed\": false}, {\"check\": \"regression: equal-laxity tie-break (partial repair)\", \"actual\": [[[\"B0\", 2], [\"B1\", 6], [\"B2\", 3]], [\"B0\", \"B1\", \"B2\"]], \"expected\": [[[\"B0\", 2], [\"B1\", 6], [\"B2\", 3]], [\"B0\", \"B1\", \"B2\"]], \"passed\": true}, {\"check\": \"control 1\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0]], []], \"passed\": true}, {\"check\": \"control 2\", \"actual\": [[[\"B0\", 0], [\"B1\", 0]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0]], []], \"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."}}