{"abstract":"The workflow cancel operation is admitted even though an old cancellation request terminates a newer run.","category":"Workflow orchestration","checks":9,"contract":"Return a Boolean admission decision for complete workflow cancellation. The record r must satisfy all of: all(r['child_propagation']); r['activity_cleanup'] is True; r['terminal_stability'] not in ['completed','failed']; r['request_generation'][0] == r['request_generation'][1]; r['cleanup_deadline'][0] <= r['cleanup_deadline'][1]. Extra tracing fields are ignored; validation does not mutate the record.","evaluation_group":"xd-workflow-cancel","failed_approach":"Adding the request generation check repairs the reported defect, but replacing the adjacent cleanup deadline check loses that independent invariant.","family":"xd-workflow-cancel-request_generation","id":"FA-1291","implementations":{"attempt":{"sha256":"f37d6054f1e85a7bf1517c50734943f9a8e37eadc21e3902f053dc2f49c10bcb","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (all(r['child_propagation'])) and (r['activity_cleanup'] is True) and (r['terminal_stability'] not in ['completed','failed']) and (r['request_generation'][0] == r['request_generation'][1])\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'child_propagation': [True, True], 'activity_cleanup': True, 'terminal_stability': 'running', 'request_generation': ['r3', 'r3'], 'cleanup_deadline': [10, 10]}\ncheck('valid operation', solve(r), True)\ncheck('Cancellation leaves dependent child workflows executing', solve(dict(r, **{'child_propagation': [True, False]})), False)\ncheck('Cancellation completes before required activity cleanup', solve(dict(r, **{'activity_cleanup': False})), False)\ncheck('Cancellation rewrites an already successful terminal result', solve(dict(r, **{'terminal_stability': 'completed'})), False)\ncheck('An old cancellation request terminates a newer run', solve(dict(r, **{'request_generation': ['r2', 'r3']})), False)\ncheck('Cancellation waits beyond its explicit cleanup deadline', solve(dict(r, **{'cleanup_deadline': [11, 10]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'child_propagation': [True, False], 'activity_cleanup': False, 'terminal_stability': 'completed', 'request_generation': ['r2', 'r3'], 'cleanup_deadline': [11, 10]}\nkeys = list(invalid)\npair = {keys[N % len(keys)]: invalid[keys[N % len(keys)]], keys[(N+1) % len(keys)]: invalid[keys[(N+1) % len(keys)]]}\ncheck('two independent violations in variant', solve(dict(r, **pair)), False)\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":"3bf50403e7ab02c577311b7a107d90e535c6d2058a75b1aa8ca5f18eab0e8fee","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (all(r['child_propagation'])) and (r['activity_cleanup'] is True) and (r['terminal_stability'] not in ['completed','failed']) and (r['cleanup_deadline'][0] <= r['cleanup_deadline'][1])\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'child_propagation': [True, True], 'activity_cleanup': True, 'terminal_stability': 'running', 'request_generation': ['r3', 'r3'], 'cleanup_deadline': [10, 10]}\ncheck('valid operation', solve(r), True)\ncheck('Cancellation leaves dependent child workflows executing', solve(dict(r, **{'child_propagation': [True, False]})), False)\ncheck('Cancellation completes before required activity cleanup', solve(dict(r, **{'activity_cleanup': False})), False)\ncheck('Cancellation rewrites an already successful terminal result', solve(dict(r, **{'terminal_stability': 'completed'})), False)\ncheck('An old cancellation request terminates a newer run', solve(dict(r, **{'request_generation': ['r2', 'r3']})), False)\ncheck('Cancellation waits beyond its explicit cleanup deadline', solve(dict(r, **{'cleanup_deadline': [11, 10]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'child_propagation': [True, False], 'activity_cleanup': False, 'terminal_stability': 'completed', 'request_generation': ['r2', 'r3'], 'cleanup_deadline': [11, 10]}\nkeys = list(invalid)\npair = {keys[N % len(keys)]: invalid[keys[N % len(keys)]], keys[(N+1) % len(keys)]: invalid[keys[(N+1) % len(keys)]]}\ncheck('two independent violations in variant', solve(dict(r, **pair)), False)\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":"c81db3daacf3710610940096e79f737fdb7224efd26fb113cf3e20bb9fa0ba3d","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (all(r['child_propagation'])) and (r['activity_cleanup'] is True) and (r['terminal_stability'] not in ['completed','failed']) and (r['request_generation'][0] == r['request_generation'][1]) and (r['cleanup_deadline'][0] <= r['cleanup_deadline'][1])\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'child_propagation': [True, True], 'activity_cleanup': True, 'terminal_stability': 'running', 'request_generation': ['r3', 'r3'], 'cleanup_deadline': [10, 10]}\ncheck('valid operation', solve(r), True)\ncheck('Cancellation leaves dependent child workflows executing', solve(dict(r, **{'child_propagation': [True, False]})), False)\ncheck('Cancellation completes before required activity cleanup', solve(dict(r, **{'activity_cleanup': False})), False)\ncheck('Cancellation rewrites an already successful terminal result', solve(dict(r, **{'terminal_stability': 'completed'})), False)\ncheck('An old cancellation request terminates a newer run', solve(dict(r, **{'request_generation': ['r2', 'r3']})), False)\ncheck('Cancellation waits beyond its explicit cleanup deadline', solve(dict(r, **{'cleanup_deadline': [11, 10]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'child_propagation': [True, False], 'activity_cleanup': False, 'terminal_stability': 'completed', 'request_generation': ['r2', 'r3'], 'cleanup_deadline': [11, 10]}\nkeys = list(invalid)\npair = {keys[N % len(keys)]: invalid[keys[N % len(keys)]], keys[(N+1) % len(keys)]: invalid[keys[(N+1) % len(keys)]]}\ncheck('two independent violations in variant', solve(dict(r, **pair)), False)\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":"xd-workflow-cancel-request_generation","generated_at":"2026-09-29T14:37:00.869407+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A deterministic local contract for workflow orchestration. Each negative fixture violates exactly one invariant. No transport timing, persistence, cryptographic verification, or full protocol implementation is claimed.","repair":"Require r['request_generation'][0] == r['request_generation'][1] together with every other stated precondition before accepting the operation.","root_cause":"The admission path omits the request generation invariant while validating the other operation preconditions.","sha256":"c0ae9c755d5c0d8ed0272e1f4597e47f327ec10fcf7b8dbfeb4b58a38aafe823","title":"Complete workflow cancellation: An old cancellation request terminates a newer run · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":33.693,"exit_code":1,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":false,"check":"Cancellation leaves dependent child workflows executing","expected":false,"passed":true},{"actual":false,"check":"Cancellation completes before required activity cleanup","expected":false,"passed":true},{"actual":false,"check":"Cancellation rewrites an already successful terminal result","expected":false,"passed":true},{"actual":false,"check":"An old cancellation request terminates a newer run","expected":false,"passed":true},{"actual":true,"check":"Cancellation waits beyond its explicit cleanup deadline","expected":false,"passed":false},{"actual":true,"check":"unrelated tracing metadata","expected":true,"passed":true},{"actual":true,"check":"repeat validation is pure","expected":true,"passed":true},{"actual":false,"check":"two independent violations in variant","expected":false,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"valid operation\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"Cancellation leaves dependent child workflows executing\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation completes before required activity cleanup\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation rewrites an already successful terminal result\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"An old cancellation request terminates a newer run\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation waits beyond its explicit cleanup deadline\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"unrelated tracing metadata\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"repeat validation is pure\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"two independent violations in variant\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":35.895,"exit_code":1,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":false,"check":"Cancellation leaves dependent child workflows executing","expected":false,"passed":true},{"actual":false,"check":"Cancellation completes before required activity cleanup","expected":false,"passed":true},{"actual":false,"check":"Cancellation rewrites an already successful terminal result","expected":false,"passed":true},{"actual":true,"check":"An old cancellation request terminates a newer run","expected":false,"passed":false},{"actual":false,"check":"Cancellation waits beyond its explicit cleanup deadline","expected":false,"passed":true},{"actual":true,"check":"unrelated tracing metadata","expected":true,"passed":true},{"actual":true,"check":"repeat validation is pure","expected":true,"passed":true},{"actual":false,"check":"two independent violations in variant","expected":false,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"valid operation\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"Cancellation leaves dependent child workflows executing\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation completes before required activity cleanup\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation rewrites an already successful terminal result\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"An old cancellation request terminates a newer run\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"Cancellation waits beyond its explicit cleanup deadline\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"unrelated tracing metadata\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"repeat validation is pure\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"two independent violations in variant\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":123.28,"exit_code":0,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":false,"check":"Cancellation leaves dependent child workflows executing","expected":false,"passed":true},{"actual":false,"check":"Cancellation completes before required activity cleanup","expected":false,"passed":true},{"actual":false,"check":"Cancellation rewrites an already successful terminal result","expected":false,"passed":true},{"actual":false,"check":"An old cancellation request terminates a newer run","expected":false,"passed":true},{"actual":false,"check":"Cancellation waits beyond its explicit cleanup deadline","expected":false,"passed":true},{"actual":true,"check":"unrelated tracing metadata","expected":true,"passed":true},{"actual":true,"check":"repeat validation is pure","expected":true,"passed":true},{"actual":false,"check":"two independent violations in variant","expected":false,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"valid operation\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"Cancellation leaves dependent child workflows executing\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation completes before required activity cleanup\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation rewrites an already successful terminal result\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"An old cancellation request terminates a newer run\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"Cancellation waits beyond its explicit cleanup deadline\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"unrelated tracing metadata\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"repeat validation is pure\", \"actual\": true, \"expected\": true, \"passed\": true}, {\"check\": \"two independent violations in variant\", \"actual\": false, \"expected\": false, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}