{"abstract":"The workflow start operation is admitted even though a deferred start begins beyond the workflow start deadline.","category":"Workflow orchestration","checks":9,"contract":"Return a Boolean admission decision for start a durable workflow execution. The record r must satisfy all of: r['execution_unique'][0] not in r['execution_unique'][1]; r['version_available'][0] in r['version_available'][1]; set(r['input_required'][0]) <= set(r['input_required'][1]); r['parent_live'] == 'running'; r['start_deadline'][0] < r['start_deadline'][1]. Extra tracing fields are ignored; validation does not mutate the record.","evaluation_group":"xd-workflow-start","failed_approach":"Adding the start deadline check repairs the reported defect, but replacing the adjacent execution unique check loses that independent invariant.","family":"xd-workflow-start-start_deadline","id":"FA-1121","implementations":{"attempt":{"sha256":"3a54fe374fee307cadae2b42ea8492d6fe7a24a41486c47c1873a63826a1d40c","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (r['version_available'][0] in r['version_available'][1]) and (set(r['input_required'][0]) <= set(r['input_required'][1])) and (r['parent_live'] == 'running') and (r['start_deadline'][0] < r['start_deadline'][1])\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'execution_unique': ['e2', ['e1']], 'version_available': [3, [2, 3]], 'input_required': [['order'], ['order', 'note']], 'parent_live': 'running', 'start_deadline': [10, 11]}\ncheck('valid operation', solve(r), True)\ncheck('A duplicate start creates a second active execution', solve(dict(r, **{'execution_unique': ['e1', ['e1']]})), False)\ncheck('The workflow starts on an unavailable definition version', solve(dict(r, **{'version_available': [4, [2, 3]]})), False)\ncheck('A workflow starts without its required input fields', solve(dict(r, **{'input_required': [['order'], ['note']]})), False)\ncheck('A child starts after its parent was cancelled', solve(dict(r, **{'parent_live': 'cancelled'})), False)\ncheck('A deferred start begins beyond the workflow start deadline', solve(dict(r, **{'start_deadline': [11, 11]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'execution_unique': ['e1', ['e1']], 'version_available': [4, [2, 3]], 'input_required': [['order'], ['note']], 'parent_live': 'cancelled', 'start_deadline': [11, 11]}\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":"28ea0ee976102d6eb3e4d61772928b08361f235b2c6eeeeaa3d1aeda18b987d0","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (r['execution_unique'][0] not in r['execution_unique'][1]) and (r['version_available'][0] in r['version_available'][1]) and (set(r['input_required'][0]) <= set(r['input_required'][1])) and (r['parent_live'] == 'running')\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'execution_unique': ['e2', ['e1']], 'version_available': [3, [2, 3]], 'input_required': [['order'], ['order', 'note']], 'parent_live': 'running', 'start_deadline': [10, 11]}\ncheck('valid operation', solve(r), True)\ncheck('A duplicate start creates a second active execution', solve(dict(r, **{'execution_unique': ['e1', ['e1']]})), False)\ncheck('The workflow starts on an unavailable definition version', solve(dict(r, **{'version_available': [4, [2, 3]]})), False)\ncheck('A workflow starts without its required input fields', solve(dict(r, **{'input_required': [['order'], ['note']]})), False)\ncheck('A child starts after its parent was cancelled', solve(dict(r, **{'parent_live': 'cancelled'})), False)\ncheck('A deferred start begins beyond the workflow start deadline', solve(dict(r, **{'start_deadline': [11, 11]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'execution_unique': ['e1', ['e1']], 'version_available': [4, [2, 3]], 'input_required': [['order'], ['note']], 'parent_live': 'cancelled', 'start_deadline': [11, 11]}\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":"bb4b4e3f7f304e889582731d42ea6d7fa9392e718de3751d4fe0d5fe209f2ac2","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(r):\n    return (r['execution_unique'][0] not in r['execution_unique'][1]) and (r['version_available'][0] in r['version_available'][1]) and (set(r['input_required'][0]) <= set(r['input_required'][1])) and (r['parent_live'] == 'running') and (r['start_deadline'][0] < r['start_deadline'][1])\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\nr = {'execution_unique': ['e2', ['e1']], 'version_available': [3, [2, 3]], 'input_required': [['order'], ['order', 'note']], 'parent_live': 'running', 'start_deadline': [10, 11]}\ncheck('valid operation', solve(r), True)\ncheck('A duplicate start creates a second active execution', solve(dict(r, **{'execution_unique': ['e1', ['e1']]})), False)\ncheck('The workflow starts on an unavailable definition version', solve(dict(r, **{'version_available': [4, [2, 3]]})), False)\ncheck('A workflow starts without its required input fields', solve(dict(r, **{'input_required': [['order'], ['note']]})), False)\ncheck('A child starts after its parent was cancelled', solve(dict(r, **{'parent_live': 'cancelled'})), False)\ncheck('A deferred start begins beyond the workflow start deadline', solve(dict(r, **{'start_deadline': [11, 11]})), False)\ncheck('unrelated tracing metadata', solve(dict(r, trace='run-'+str(N))), True)\ncheck('repeat validation is pure', solve(r), True)\ninvalid = {'execution_unique': ['e1', ['e1']], 'version_available': [4, [2, 3]], 'input_required': [['order'], ['note']], 'parent_live': 'cancelled', 'start_deadline': [11, 11]}\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-start-start_deadline","generated_at":"2026-09-29T14:36:59.181459+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['start_deadline'][0] < r['start_deadline'][1] together with every other stated precondition before accepting the operation.","root_cause":"The admission path omits the start deadline invariant while validating the other operation preconditions.","sha256":"12a8d7cb3bc68b3b4e2e0199ebad085735ec40d9952b8f31d1231abeca725c24","title":"Start a durable workflow execution: A deferred start begins beyond the workflow start deadline · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":33.843,"exit_code":1,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":true,"check":"A duplicate start creates a second active execution","expected":false,"passed":false},{"actual":false,"check":"The workflow starts on an unavailable definition version","expected":false,"passed":true},{"actual":false,"check":"A workflow starts without its required input fields","expected":false,"passed":true},{"actual":false,"check":"A child starts after its parent was cancelled","expected":false,"passed":true},{"actual":false,"check":"A deferred start begins beyond the workflow start 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\": \"A duplicate start creates a second active execution\", \"actual\": true, \"expected\": false, \"passed\": false}, {\"check\": \"The workflow starts on an unavailable definition version\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A workflow starts without its required input fields\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A child starts after its parent was cancelled\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A deferred start begins beyond the workflow start 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"},"broken":{"elapsed_ms":32.383,"exit_code":1,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":false,"check":"A duplicate start creates a second active execution","expected":false,"passed":true},{"actual":false,"check":"The workflow starts on an unavailable definition version","expected":false,"passed":true},{"actual":false,"check":"A workflow starts without its required input fields","expected":false,"passed":true},{"actual":false,"check":"A child starts after its parent was cancelled","expected":false,"passed":true},{"actual":true,"check":"A deferred start begins beyond the workflow start 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\": \"A duplicate start creates a second active execution\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"The workflow starts on an unavailable definition version\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A workflow starts without its required input fields\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A child starts after its parent was cancelled\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A deferred start begins beyond the workflow start 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"},"fixed":{"elapsed_ms":35.283,"exit_code":0,"observations":[{"actual":true,"check":"valid operation","expected":true,"passed":true},{"actual":false,"check":"A duplicate start creates a second active execution","expected":false,"passed":true},{"actual":false,"check":"The workflow starts on an unavailable definition version","expected":false,"passed":true},{"actual":false,"check":"A workflow starts without its required input fields","expected":false,"passed":true},{"actual":false,"check":"A child starts after its parent was cancelled","expected":false,"passed":true},{"actual":false,"check":"A deferred start begins beyond the workflow start 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\": \"A duplicate start creates a second active execution\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"The workflow starts on an unavailable definition version\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A workflow starts without its required input fields\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A child starts after its parent was cancelled\", \"actual\": false, \"expected\": false, \"passed\": true}, {\"check\": \"A deferred start begins beyond the workflow start 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"}