{"abstract":"Quic max data updates are monotonic.","category":"Multiplexed protocols","checks":4,"contract":"Bounded offline decision model: quic max data updates are monotonic. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.","contract_signature":"old, new","evaluation_group":"xh-quic-max-data-updates-are-monotonic","failed_approach":"The attempted repair uses `old+new` and still violates a separate fixture.","family":"xh-quic-max-data-updates-are-monotonic","id":"FA-7556","implementations":{"attempt":{"sha256":"9787995813eb7672776e8731e0b7faf9ba389a3b46434039b387b66c9354237c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport ipaddress\nimport re\nfrom urllib.parse import urlsplit, urljoin\nN = 1\nobservations = []\ndef solve(old, new):\n    return old+new\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 5), 10)\", \"check('fixture 2', solve(10, 20), 20)\", \"check('fixture 3', solve(0, 0), 0)\", \"check('fixture 4', solve(0, 5), 5)\"]\nfor _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:\n    exec(_line)\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":"2edd431b5b480393889034ccb7014ba256c030d5b94410b9cbed7dd7d3c8681f","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport ipaddress\nimport re\nfrom urllib.parse import urlsplit, urljoin\nN = 1\nobservations = []\ndef solve(old, new):\n    return new\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 5), 10)\", \"check('fixture 2', solve(10, 20), 20)\", \"check('fixture 3', solve(0, 0), 0)\", \"check('fixture 4', solve(0, 5), 5)\"]\nfor _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:\n    exec(_line)\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":"Bounded deterministic policy model over validated inputs; not a complete protocol stack or an interoperability claim. The five variants rotate the same explicit fixture set. 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":"xh-quic-max-data-updates-are-monotonic","generated_at":"2026-09-29T14:38:13.170320+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This deterministic multiplexed protocols model isolates the quic-max-data-updates-are-monotonic policy at a network component boundary.","root_cause":"The faulty implementation uses `new` for the quic-max-data-updates-are-monotonic decision.","sha256":"c1ca5a63f235abe9051917fae8703c9d9d2fa6b8547ee0ba2475590ba9326ccc","title":"Quic max data updates are monotonic · 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":39.346,"exit_code":1,"observations":[{"actual":30,"check":"fixture 2","expected":20,"passed":false},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":5,"check":"fixture 4","expected":5,"passed":true},{"actual":15,"check":"fixture 1","expected":10,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 30, \"expected\": 20, \"passed\": false}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 5, \"expected\": 5, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 15, \"expected\": 10, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.213,"exit_code":1,"observations":[{"actual":20,"check":"fixture 2","expected":20,"passed":true},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":5,"check":"fixture 4","expected":5,"passed":true},{"actual":5,"check":"fixture 1","expected":10,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 5, \"expected\": 5, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 5, \"expected\": 10, \"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."}}