{"abstract":"Cache redirects only under the stipulated freshness and response policy: the status persisted branch emits an incorrect decision.","category":"HTTP redirects","checks":6,"contract":"Cache redirects only under the stipulated freshness and response policy. The explicit fixture inputs and outputs define a bounded offline policy; request identity must accompany the decision.","evaluation_group":"s3-http-redirects-cache-admission","failed_approach":"The partial repair uses '302' and still fails an explicit boundary or control.","family":"s3-http-redirects-cache-admission-status-persisted","id":"FA-28436","implementations":{"attempt":{"sha256":"afaed973fc098e341854dfcb2cdb37e036a20d5be80d2ac91f29338f747515ca","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom urllib.parse import urlsplit, unquote, quote\nimport posixpath\nimport re\nN = 1\nobservations = []\ndef solve(request, status, ttl, age, no_store, private, shared, location):\n    return {'request': request, 'decision': [max(0,ttl-age), status in (301,308), status in (302,303,307) and ttl>0, not no_store, not (private and shared), age>=ttl, location is not None, status in (302,303,307) and ttl>age, age, 302]} \ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve('/requests/' + str(N) + '/0', 301, 60, 10, False, False, True, '/b'), {'request': '/requests/' + str(N) + '/0', 'decision': [50, True, False, True, True, False, True, False, 10, 301]})\ncheck('fixture 2', solve('/requests/' + str(N) + '/1', 302, 0, 0, False, False, True, '/c'), {'request': '/requests/' + str(N) + '/1', 'decision': [0, False, False, True, True, True, True, False, 0, 302]})\ncheck('fixture 3', solve('/requests/' + str(N) + '/2', 307, 30, 35, False, True, True, '/d'), {'request': '/requests/' + str(N) + '/2', 'decision': [0, False, True, True, False, True, True, False, 35, 307]})\ncheck('fixture 4', solve('/requests/' + str(N) + '/3', 308, 60, 0, True, False, False, '/e'), {'request': '/requests/' + str(N) + '/3', 'decision': [60, True, False, False, True, False, True, False, 0, 308]})\ncheck('fixture 5', solve('/requests/' + str(N) + '/4', 303, 20, 5, False, True, False, ''), {'request': '/requests/' + str(N) + '/4', 'decision': [15, False, True, True, True, False, True, True, 5, 303]})\ncheck('fixture 6', solve('/requests/' + str(N) + '/5', 200, 0, 0, False, False, False, None), {'request': '/requests/' + str(N) + '/5', 'decision': [0, False, False, True, True, True, False, False, 0, 200]})\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":"347713dadf22c19f3c83d81227d865bfd2e734b3805fbe1511eecdde04dd8d86","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom urllib.parse import urlsplit, unquote, quote\nimport posixpath\nimport re\nN = 1\nobservations = []\ndef solve(request, status, ttl, age, no_store, private, shared, location):\n    return {'request': request, 'decision': [max(0,ttl-age), status in (301,308), status in (302,303,307) and ttl>0, not no_store, not (private and shared), age>=ttl, location is not None, status in (302,303,307) and ttl>age, age, 301 if status in (301,308) else 302]} \ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve('/requests/' + str(N) + '/0', 301, 60, 10, False, False, True, '/b'), {'request': '/requests/' + str(N) + '/0', 'decision': [50, True, False, True, True, False, True, False, 10, 301]})\ncheck('fixture 2', solve('/requests/' + str(N) + '/1', 302, 0, 0, False, False, True, '/c'), {'request': '/requests/' + str(N) + '/1', 'decision': [0, False, False, True, True, True, True, False, 0, 302]})\ncheck('fixture 3', solve('/requests/' + str(N) + '/2', 307, 30, 35, False, True, True, '/d'), {'request': '/requests/' + str(N) + '/2', 'decision': [0, False, True, True, False, True, True, False, 35, 307]})\ncheck('fixture 4', solve('/requests/' + str(N) + '/3', 308, 60, 0, True, False, False, '/e'), {'request': '/requests/' + str(N) + '/3', 'decision': [60, True, False, False, True, False, True, False, 0, 308]})\ncheck('fixture 5', solve('/requests/' + str(N) + '/4', 303, 20, 5, False, True, False, ''), {'request': '/requests/' + str(N) + '/4', 'decision': [15, False, True, True, True, False, True, True, 5, 303]})\ncheck('fixture 6', solve('/requests/' + str(N) + '/5', 200, 0, 0, False, False, False, None), {'request': '/requests/' + str(N) + '/5', 'decision': [0, False, False, True, True, True, False, False, 0, 200]})\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":"25e7333f96ca6671ab42634b52c778ba3639040db566428c62f13fd5d61a9ef5","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nfrom urllib.parse import urlsplit, unquote, quote\nimport posixpath\nimport re\nN = 1\nobservations = []\ndef solve(request, status, ttl, age, no_store, private, shared, location):\n    return {'request': request, 'decision': [max(0,ttl-age), status in (301,308), status in (302,303,307) and ttl>0, not no_store, not (private and shared), age>=ttl, location is not None, status in (302,303,307) and ttl>age, age, status]} \ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('fixture 1', solve('/requests/' + str(N) + '/0', 301, 60, 10, False, False, True, '/b'), {'request': '/requests/' + str(N) + '/0', 'decision': [50, True, False, True, True, False, True, False, 10, 301]})\ncheck('fixture 2', solve('/requests/' + str(N) + '/1', 302, 0, 0, False, False, True, '/c'), {'request': '/requests/' + str(N) + '/1', 'decision': [0, False, False, True, True, True, True, False, 0, 302]})\ncheck('fixture 3', solve('/requests/' + str(N) + '/2', 307, 30, 35, False, True, True, '/d'), {'request': '/requests/' + str(N) + '/2', 'decision': [0, False, True, True, False, True, True, False, 35, 307]})\ncheck('fixture 4', solve('/requests/' + str(N) + '/3', 308, 60, 0, True, False, False, '/e'), {'request': '/requests/' + str(N) + '/3', 'decision': [60, True, False, False, True, False, True, False, 0, 308]})\ncheck('fixture 5', solve('/requests/' + str(N) + '/4', 303, 20, 5, False, True, False, ''), {'request': '/requests/' + str(N) + '/4', 'decision': [15, False, True, True, True, False, True, True, 5, 303]})\ncheck('fixture 6', solve('/requests/' + str(N) + '/5', 200, 0, 0, False, False, False, None), {'request': '/requests/' + str(N) + '/5', 'decision': [0, False, False, True, True, True, False, False, 0, 200]})\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":"Stipulated offline redirect policy, not a complete HTTP, browser, URL, cache, or security implementation. Numbered variants vary request correlation identity. 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":"s3-http-redirects-cache-admission-status-persisted","generated_at":"2026-09-29T14:41:33.886147+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"Models a redirect controller decision before following a target or exposing a redirect result.","repair":"At this decision use 'status', preserving the other controller outputs.","root_cause":"The status-persisted decision uses '301 if status in (301,308) else 302'; this violates the stipulated controller policy.","sha256":"b35dab0c448289209fcf901989f764b8b4351281105c3e0fb2d9a821f9377767","title":"Cache redirects only under the stipulated freshness and response policy: status persisted · case 01","variant":1,"variant_policy":"N changes request correlation identity. Policy boundary fixtures are reused; numbered variants are not independent examples.","verification":{"attempt":{"elapsed_ms":36.913,"exit_code":1,"observations":[{"actual":{"decision":[50,true,false,true,true,false,true,false,10,302],"request":"/requests/1/0"},"check":"fixture 1","expected":{"decision":[50,true,false,true,true,false,true,false,10,301],"request":"/requests/1/0"},"passed":false},{"actual":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"check":"fixture 2","expected":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"passed":true},{"actual":{"decision":[0,false,true,true,false,true,true,false,35,302],"request":"/requests/1/2"},"check":"fixture 3","expected":{"decision":[0,false,true,true,false,true,true,false,35,307],"request":"/requests/1/2"},"passed":false},{"actual":{"decision":[60,true,false,false,true,false,true,false,0,302],"request":"/requests/1/3"},"check":"fixture 4","expected":{"decision":[60,true,false,false,true,false,true,false,0,308],"request":"/requests/1/3"},"passed":false},{"actual":{"decision":[15,false,true,true,true,false,true,true,5,302],"request":"/requests/1/4"},"check":"fixture 5","expected":{"decision":[15,false,true,true,true,false,true,true,5,303],"request":"/requests/1/4"},"passed":false},{"actual":{"decision":[0,false,false,true,true,true,false,false,0,302],"request":"/requests/1/5"},"check":"fixture 6","expected":{"decision":[0,false,false,true,true,true,false,false,0,200],"request":"/requests/1/5"},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 302]}, \"expected\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 301]}, \"passed\": false}, {\"check\": \"fixture 2\", \"actual\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 302]}, \"expected\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 307]}, \"passed\": false}, {\"check\": \"fixture 4\", \"actual\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 308]}, \"passed\": false}, {\"check\": \"fixture 5\", \"actual\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 302]}, \"expected\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 303]}, \"passed\": false}, {\"check\": \"fixture 6\", \"actual\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 200]}, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":39.014,"exit_code":1,"observations":[{"actual":{"decision":[50,true,false,true,true,false,true,false,10,301],"request":"/requests/1/0"},"check":"fixture 1","expected":{"decision":[50,true,false,true,true,false,true,false,10,301],"request":"/requests/1/0"},"passed":true},{"actual":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"check":"fixture 2","expected":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"passed":true},{"actual":{"decision":[0,false,true,true,false,true,true,false,35,302],"request":"/requests/1/2"},"check":"fixture 3","expected":{"decision":[0,false,true,true,false,true,true,false,35,307],"request":"/requests/1/2"},"passed":false},{"actual":{"decision":[60,true,false,false,true,false,true,false,0,301],"request":"/requests/1/3"},"check":"fixture 4","expected":{"decision":[60,true,false,false,true,false,true,false,0,308],"request":"/requests/1/3"},"passed":false},{"actual":{"decision":[15,false,true,true,true,false,true,true,5,302],"request":"/requests/1/4"},"check":"fixture 5","expected":{"decision":[15,false,true,true,true,false,true,true,5,303],"request":"/requests/1/4"},"passed":false},{"actual":{"decision":[0,false,false,true,true,true,false,false,0,302],"request":"/requests/1/5"},"check":"fixture 6","expected":{"decision":[0,false,false,true,true,true,false,false,0,200],"request":"/requests/1/5"},"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 301]}, \"expected\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 301]}, \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 302]}, \"expected\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 307]}, \"passed\": false}, {\"check\": \"fixture 4\", \"actual\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 301]}, \"expected\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 308]}, \"passed\": false}, {\"check\": \"fixture 5\", \"actual\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 302]}, \"expected\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 303]}, \"passed\": false}, {\"check\": \"fixture 6\", \"actual\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 200]}, \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":37.379,"exit_code":0,"observations":[{"actual":{"decision":[50,true,false,true,true,false,true,false,10,301],"request":"/requests/1/0"},"check":"fixture 1","expected":{"decision":[50,true,false,true,true,false,true,false,10,301],"request":"/requests/1/0"},"passed":true},{"actual":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"check":"fixture 2","expected":{"decision":[0,false,false,true,true,true,true,false,0,302],"request":"/requests/1/1"},"passed":true},{"actual":{"decision":[0,false,true,true,false,true,true,false,35,307],"request":"/requests/1/2"},"check":"fixture 3","expected":{"decision":[0,false,true,true,false,true,true,false,35,307],"request":"/requests/1/2"},"passed":true},{"actual":{"decision":[60,true,false,false,true,false,true,false,0,308],"request":"/requests/1/3"},"check":"fixture 4","expected":{"decision":[60,true,false,false,true,false,true,false,0,308],"request":"/requests/1/3"},"passed":true},{"actual":{"decision":[15,false,true,true,true,false,true,true,5,303],"request":"/requests/1/4"},"check":"fixture 5","expected":{"decision":[15,false,true,true,true,false,true,true,5,303],"request":"/requests/1/4"},"passed":true},{"actual":{"decision":[0,false,false,true,true,true,false,false,0,200],"request":"/requests/1/5"},"check":"fixture 6","expected":{"decision":[0,false,false,true,true,true,false,false,0,200],"request":"/requests/1/5"},"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 1\", \"actual\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 301]}, \"expected\": {\"request\": \"/requests/1/0\", \"decision\": [50, true, false, true, true, false, true, false, 10, 301]}, \"passed\": true}, {\"check\": \"fixture 2\", \"actual\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"expected\": {\"request\": \"/requests/1/1\", \"decision\": [0, false, false, true, true, true, true, false, 0, 302]}, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 307]}, \"expected\": {\"request\": \"/requests/1/2\", \"decision\": [0, false, true, true, false, true, true, false, 35, 307]}, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 308]}, \"expected\": {\"request\": \"/requests/1/3\", \"decision\": [60, true, false, false, true, false, true, false, 0, 308]}, \"passed\": true}, {\"check\": \"fixture 5\", \"actual\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 303]}, \"expected\": {\"request\": \"/requests/1/4\", \"decision\": [15, false, true, true, true, false, true, true, 5, 303]}, \"passed\": true}, {\"check\": \"fixture 6\", \"actual\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 200]}, \"expected\": {\"request\": \"/requests/1/5\", \"decision\": [0, false, false, true, true, true, false, false, 0, 200]}, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}