{"abstract":"A blank assistant payload terminates the workflow as a successful answer.","category":"Agent workflow termination","checks":7,"contract":"Return true iff final_seen and payload contains at least one non-whitespace character.","contract_signature":"final_seen, payload","evaluation_group":"w3-agent-workflow-termination-final-answer-validity","failed_approach":"Requiring truthy payload without the marker accepts unfinished commentary.","family":"w3-agent-workflow-termination-final-answer-validity","id":"FA-99871","implementations":{"attempt":{"sha256":"d90a0be764275ced84b77a830a66c2976149ccf8d751d91f158b491a0e413958","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(final_seen, payload):\n    return bool(payload.strip())\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('ordinary final', solve(True,'done'),True)\ncheck('blank final', solve(True,''),False)\ncheck('spaces final', solve(True,'  '),False)\ncheck('payload without final', solve(False,'done'),False)\ncheck('empty unfinished', solve(False,''),False)\ncheck('newline only', solve(True,'\\n\\t'),False)\ncheck('single character final', solve(True,'x'),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":"8d724bfc903ad26fd450f61ea354c90a8352f49a8a47d2f26f34e1f7b65966e7","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(final_seen, payload):\n    return bool(final_seen)\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('ordinary final', solve(True,'done'),True)\ncheck('blank final', solve(True,''),False)\ncheck('spaces final', solve(True,'  '),False)\ncheck('payload without final', solve(False,'done'),False)\ncheck('empty unfinished', solve(False,''),False)\ncheck('newline only', solve(True,'\\n\\t'),False)\ncheck('single character final', solve(True,'x'),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":"Payload is a string; schema and content quality are not assessed. 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":"w3-agent-workflow-termination-final-answer-validity","generated_at":"2026-09-30T16:48:28.969710+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This toy decision rule isolates one bounded agent-loop completion contract.","root_cause":"The completion predicate checks only the final marker.","sha256":"76dcede08d0cda03f6b24fd7992c710905ab886413fe404478d1f63887bd3524","title":"Workflow: empty final payload is treated as completion · case 01","variant":1,"variant_policy":"The same explicitly authored fixtures repeat across all five numbered records; runtime N is unused. These records share one mechanism and must remain together in evaluation splits.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":29.719,"exit_code":1,"observations":[{"actual":true,"check":"ordinary final","expected":true,"passed":true},{"actual":false,"check":"blank final","expected":false,"passed":true},{"actual":false,"check":"spaces final","expected":false,"passed":true},{"actual":true,"check":"payload without final","expected":false,"passed":false},{"actual":false,"check":"empty unfinished","expected":false,"passed":true},{"actual":false,"check":"newline only","expected":false,"passed":true},{"actual":true,"check":"single character final","expected":true,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"ordinary final\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"blank final\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"spaces final\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"payload without final\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"empty unfinished\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"newline only\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"single character final\", \"actual\": true, \"expected\": true, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":28.492,"exit_code":1,"observations":[{"actual":true,"check":"ordinary final","expected":true,"passed":true},{"actual":true,"check":"blank final","expected":false,"passed":false},{"actual":true,"check":"spaces final","expected":false,"passed":false},{"actual":false,"check":"payload without final","expected":false,"passed":true},{"actual":false,"check":"empty unfinished","expected":false,"passed":true},{"actual":true,"check":"newline only","expected":false,"passed":false},{"actual":true,"check":"single character final","expected":true,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"ordinary final\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"blank final\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"spaces final\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"payload without final\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"empty unfinished\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"newline only\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"single character final\", \"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."}}