{"abstract":"Vehicles end with negative remaining energy and capacity is wasted on them.","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].","evaluation_group":"w2-ev_charging_session_scheduling-depot-least-laxity","failed_approach":"Clamping to the remaining need but not the capacity oversubscribes the site.","family":"w2-ev_charging_session_scheduling-depot-least-laxity-grant-clamp-to-remaining","id":"FA-93111","implementations":{"attempt":{"sha256":"7c80dc3c4fde931ed0e255f8b42db739a7ee4973cda5d1e2cd8cd8792865b9d2","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[0]))\n        cap = site_units\n        for v in present:\n            give = min(v[3], rem[v[0]])\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: grant clamp to remaining',\n   [[['B2', 8, 6, 4], ['B1', 3, 8, 3], ['B3', 8, 6, 3], ['B0', 8, 9, 2], ['B4', 10, 3, 1]], 8, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0], ['B4', 7]], ['B4']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B2', 4, 8, 3], ['B0', 4, 7, 4], ['B1', 12, 4, 3]], 4, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['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: grant clamp to remaining',\n   [[['B2', 3, 8, 4], ['B0', 6, 2, 3], ['B1', 11, 2, 2]], 6, 10],\n   [[['B0', 0], ['B1', 7], ['B2', 0]], ['B1']]],\n  ['regression: grant clamp to remaining (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: grant clamp to remaining', [[['B1', 1, 9, 4], ['B0', 4, 1, 1]], 3, 6],\n   [[['B0', 3], ['B1', 0]], ['B0']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 7, 4, 3], ['B0', 14, 6, 2]], 3, 6], [[['B0', 2], ['B1', 3]], ['B0', 'B1']]],\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: grant clamp to remaining',\n   [[['B2', 6, 1, 2], ['B0', 6, 3, 3], ['B1', 8, 9, 4]], 3, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['B2']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 12, 2, 3], ['B2', 11, 4, 2], ['B3', 13, 4, 4], ['B0', 7, 8, 4]], 4, 4],\n   [[['B0', 7], ['B1', 6], ['B2', 5], ['B3', 9]], ['B0', 'B1', 'B2', 'B3']]],\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: grant clamp to remaining',\n   [[['B1', 3, 9, 3], ['B2', 0, 5, 4], ['B3', 4, 6, 2], ['B0', 4, 9, 3]], 7, 6],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['regression: grant clamp to remaining (partial repair)',\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  ['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":"8dde4bb88cfa01db177fbc2b7379b3b0e0256b1a327a67bc25df59c866a8f144","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[0]))\n        cap = site_units\n        for v in present:\n            give = min(v[3], 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: grant clamp to remaining',\n   [[['B2', 8, 6, 4], ['B1', 3, 8, 3], ['B3', 8, 6, 3], ['B0', 8, 9, 2], ['B4', 10, 3, 1]], 8, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0], ['B4', 7]], ['B4']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B2', 4, 8, 3], ['B0', 4, 7, 4], ['B1', 12, 4, 3]], 4, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['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: grant clamp to remaining',\n   [[['B2', 3, 8, 4], ['B0', 6, 2, 3], ['B1', 11, 2, 2]], 6, 10],\n   [[['B0', 0], ['B1', 7], ['B2', 0]], ['B1']]],\n  ['regression: grant clamp to remaining (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: grant clamp to remaining', [[['B1', 1, 9, 4], ['B0', 4, 1, 1]], 3, 6],\n   [[['B0', 3], ['B1', 0]], ['B0']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 7, 4, 3], ['B0', 14, 6, 2]], 3, 6], [[['B0', 2], ['B1', 3]], ['B0', 'B1']]],\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: grant clamp to remaining',\n   [[['B2', 6, 1, 2], ['B0', 6, 3, 3], ['B1', 8, 9, 4]], 3, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['B2']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 12, 2, 3], ['B2', 11, 4, 2], ['B3', 13, 4, 4], ['B0', 7, 8, 4]], 4, 4],\n   [[['B0', 7], ['B1', 6], ['B2', 5], ['B3', 9]], ['B0', 'B1', 'B2', 'B3']]],\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: grant clamp to remaining',\n   [[['B1', 3, 9, 3], ['B2', 0, 5, 4], ['B3', 4, 6, 2], ['B0', 4, 9, 3]], 7, 6],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['regression: grant clamp to remaining (partial repair)',\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  ['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"},"fixed":{"sha256":"6ef4e4f38ed2ba2f3c683b49e98b17c7805684c9b90ad05bbe576bcef250fedf","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[0]))\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: grant clamp to remaining',\n   [[['B2', 8, 6, 4], ['B1', 3, 8, 3], ['B3', 8, 6, 3], ['B0', 8, 9, 2], ['B4', 10, 3, 1]], 8, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0], ['B4', 7]], ['B4']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B2', 4, 8, 3], ['B0', 4, 7, 4], ['B1', 12, 4, 3]], 4, 4],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['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: grant clamp to remaining',\n   [[['B2', 3, 8, 4], ['B0', 6, 2, 3], ['B1', 11, 2, 2]], 6, 10],\n   [[['B0', 0], ['B1', 7], ['B2', 0]], ['B1']]],\n  ['regression: grant clamp to remaining (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: grant clamp to remaining', [[['B1', 1, 9, 4], ['B0', 4, 1, 1]], 3, 6],\n   [[['B0', 3], ['B1', 0]], ['B0']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 7, 4, 3], ['B0', 14, 6, 2]], 3, 6], [[['B0', 2], ['B1', 3]], ['B0', 'B1']]],\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: grant clamp to remaining',\n   [[['B2', 6, 1, 2], ['B0', 6, 3, 3], ['B1', 8, 9, 4]], 3, 7],\n   [[['B0', 0], ['B1', 0], ['B2', 4]], ['B2']]],\n  ['regression: grant clamp to remaining (partial repair)',\n   [[['B1', 12, 2, 3], ['B2', 11, 4, 2], ['B3', 13, 4, 4], ['B0', 7, 8, 4]], 4, 4],\n   [[['B0', 7], ['B1', 6], ['B2', 5], ['B3', 9]], ['B0', 'B1', 'B2', 'B3']]],\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: grant clamp to remaining',\n   [[['B1', 3, 9, 3], ['B2', 0, 5, 4], ['B3', 4, 6, 2], ['B0', 4, 9, 3]], 7, 6],\n   [[['B0', 0], ['B1', 0], ['B2', 0], ['B3', 0]], []]],\n  ['regression: grant clamp to remaining (partial repair)',\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  ['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-grant-clamp-to-remaining","generated_at":"2026-09-29T14:51:52.277798+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.","repair":"Clamp each grant to max rate, remaining need and capacity left.","root_cause":"The per-slot grant is not limited by the energy the vehicle still needs.","sha256":"6c0756cc7d198dfd62a5f5890c94e75f20f7fcea3f649c72d13974e7da248164","title":"Depot least-laxity-first charging: grant clamp to remaining · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":39.773,"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",0],["B3",0],["B4",7]],["B4"]],"check":"regression: grant clamp to remaining","expected":[[["B0",0],["B1",0],["B2",0],["B3",0],["B4",7]],["B4"]],"passed":true},{"actual":[[["B0",0],["B1",0],["B2",0]],[]],"check":"regression: grant clamp to remaining (partial repair)","expected":[[["B0",0],["B1",0],["B2",4]],["B2"]],"passed":false},{"actual":[[["B0",0],["B1",0],["B2",0]],[]],"check":"control 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\"regression: grant clamp to remaining\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", -2], [\"B3\", -1], [\"B4\", 7]], [\"B4\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0], [\"B3\", 0], [\"B4\", 7]], [\"B4\"]], \"passed\": false}, {\"check\": \"regression: grant clamp to remaining (partial repair)\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"passed\": true}, {\"check\": \"control 1\", \"actual\": [[[\"B0\", 0], [\"B1\", -2], [\"B2\", -2]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0]], []], \"passed\": false}, {\"check\": \"control 2\", \"actual\": [[[\"B0\", -2], [\"B1\", -3]], []], \"expected\": [[[\"B0\", 0], [\"B1\", 0]], []], \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":51.666,"exit_code":0,"observations":[{"actual":[[["A",2],["B",0]],["A"]],"check":"boundary: departs at slot 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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: grant clamp to remaining\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0], [\"B3\", 0], [\"B4\", 7]], [\"B4\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 0], [\"B3\", 0], [\"B4\", 7]], [\"B4\"]], \"passed\": true}, {\"check\": \"regression: grant clamp to remaining (partial repair)\", \"actual\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"B2\"]], \"expected\": [[[\"B0\", 0], [\"B1\", 0], [\"B2\", 4]], [\"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\": true}\n"}},"verified":true,"visibility":"public"}