{"abstract":"The operation returns a result or retained state that violates this contract: Apply all to a one-pass stream and return [truth result,unconsumed suffix]; the empty result is true.","category":"Iterator consumption","checks":4,"contract":"Apply all to a one-pass stream and return [truth result,unconsumed suffix]; the empty result is true. Inputs are the finite Python values shown by the executable fixtures; no concurrent execution is assumed.","contract_signature":"x, y=None","evaluation_group":"model-8bbed73869b5217d","failed_approach":"Inspecting only the first value misses later failures and mishandles empty input.","family":"xr-all-short-circuit-consumption","id":"FA-4631","implementations":{"attempt":{"sha256":"d66ce06fcf8285c698ee2ecb54ff8d7c2fcce0677f430245dfb25770feb7a738","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport itertools as it\nfrom collections import deque\nN = 1\nobservations = []\ndef solve(x, y=None):\n    g=iter(x); a=bool(next(g,False)); return [a,list(g)]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('first false stops', solve([True, False, True]), [False, [True]])\ncheck('initial false', solve([False, True]), [False, [True]])\ncheck('all true', solve([True, True]), [True, []])\ncheck('empty', solve([]), [True, []])\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":"65492d35103ae0a0612fed9ea12e8a9c840ec70f620d8226c1ddb38883e46bd8","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport itertools as it\nfrom collections import deque\nN = 1\nobservations = []\ndef solve(x, y=None):\n    g=iter(x); a=all(list(g)); return [a,list(g)]\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('first false stops', solve([True, False, True]), [False, [True]])\ncheck('initial false', solve([False, True]), [False, [True]])\ncheck('all true', solve([True, True]), [True, []])\ncheck('empty', solve([]), [True, []])\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":" 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":"xr-all-short-circuit-consumption","generated_at":"2026-09-29T14:37:41.312686+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A controlled local-runtime regression for collection APIs, language semantics, or ownership wrappers. Fixtures include boundary and interaction cases.","root_cause":"Materializing input eagerly consumes values after the first false item.","sha256":"31eb3b2e7ef450d4da422926c18a1ecdae019497dde26bddce6267273e2edf75","title":"All short circuit consumption · case 01","variant":1,"variant_policy":"Five execution reruns of a fixed adversarial fixture suite; variant number does not alter semantic inputs.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":34.69,"exit_code":1,"observations":[{"actual":[true,[false,true]],"check":"first false stops","expected":[false,[true]],"passed":false},{"actual":[false,[true]],"check":"initial false","expected":[false,[true]],"passed":true},{"actual":[true,[true]],"check":"all true","expected":[true,[]],"passed":false},{"actual":[false,[]],"check":"empty","expected":[true,[]],"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"first false stops\", \"actual\": [true, [false, true]], \"expected\": [false, [true]], \"passed\": false}, {\"check\": \"initial false\", \"actual\": [false, [true]], \"expected\": [false, [true]], \"passed\": true}, {\"check\": \"all true\", \"actual\": [true, [true]], \"expected\": [true, []], \"passed\": false}, {\"check\": \"empty\", \"actual\": [false, []], \"expected\": [true, []], \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":37.141,"exit_code":1,"observations":[{"actual":[false,[]],"check":"first false stops","expected":[false,[true]],"passed":false},{"actual":[false,[]],"check":"initial false","expected":[false,[true]],"passed":false},{"actual":[true,[]],"check":"all true","expected":[true,[]],"passed":true},{"actual":[true,[]],"check":"empty","expected":[true,[]],"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"first false stops\", \"actual\": [false, []], \"expected\": [false, [true]], \"passed\": false}, {\"check\": \"initial false\", \"actual\": [false, []], \"expected\": [false, [true]], \"passed\": false}, {\"check\": \"all true\", \"actual\": [true, []], \"expected\": [true, []], \"passed\": true}, {\"check\": \"empty\", \"actual\": [true, []], \"expected\": [true, []], \"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."}}