{"abstract":"Age includes response delay after corrected received age.","category":"HTTP caching","checks":4,"contract":"Bounded offline decision model: age includes response delay after corrected received age. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.","contract_signature":"apparent, age, delay","evaluation_group":"xh-age-includes-response-delay-after-corrected-received-age","failed_approach":"The attempted repair uses `apparent+age+delay` and still violates a separate fixture.","family":"xh-age-includes-response-delay-after-corrected-received-age","id":"FA-6726","implementations":{"attempt":{"sha256":"96d649d35be9045e8c9960833d12222618e9ca79a6b45c503a97a0e15e3d3687","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(apparent, age, delay):\n    return apparent+age+delay\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 2, 3), 10)\", \"check('fixture 2', solve(2, 10, 3), 13)\", \"check('fixture 3', solve(0, 0, 0), 0)\", \"check('fixture 4', solve(5, 5, 2), 7)\"]\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":"b5e290f3a4e61fc7b0497497b0e1debfa9606f7f60963f083e15b473d8d96d64","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(apparent, age, delay):\n    return max(apparent,age)+delay\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 2, 3), 10)\", \"check('fixture 2', solve(2, 10, 3), 13)\", \"check('fixture 3', solve(0, 0, 0), 0)\", \"check('fixture 4', solve(5, 5, 2), 7)\"]\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-age-includes-response-delay-after-corrected-received-age","generated_at":"2026-09-29T14:38:04.624110+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This deterministic http caching model isolates the age-includes-response-delay-after-corrected-received-age policy at a network component boundary.","root_cause":"The faulty implementation uses `max(apparent,age)+delay` for the age-includes-response-delay-after-corrected-received-age decision.","sha256":"78d55b96c49ef938130fa405a3a9582692d35a33a461e6fbc91ee69793292acb","title":"Age includes response delay after corrected received age · 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":40.538,"exit_code":1,"observations":[{"actual":15,"check":"fixture 2","expected":13,"passed":false},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":12,"check":"fixture 4","expected":7,"passed":false},{"actual":15,"check":"fixture 1","expected":10,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 15, \"expected\": 13, \"passed\": false}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 12, \"expected\": 7, \"passed\": false}, {\"check\": \"fixture 1\", \"actual\": 15, \"expected\": 10, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":38.624,"exit_code":1,"observations":[{"actual":13,"check":"fixture 2","expected":13,"passed":true},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":7,"check":"fixture 4","expected":7,"passed":true},{"actual":13,"check":"fixture 1","expected":10,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 13, \"expected\": 13, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 7, \"expected\": 7, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 13, \"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."}}