{"abstract":"A direct-child query misses nested elements.","category":"Markup","checks":4,"contract":"Count every descendant item element excluding the root itself.","evaluation_group":"model-5bf07cbcb229d9f2","failed_approach":"The attempted repair handles the primary example but still violates a separate boundary of the same contract.","family":"xp-xml-descendant-scope","id":"FA-3246","implementations":{"attempt":{"sha256":"e36f3805af38507ca77af16b864fe06647946afc7bbdf6f0f77714905263ecf9","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return len(list(ET.fromstring(x).iter('item')))\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<r><a><item/></a></r>'), 1)\ncheck('boundary 2', solve('<item><item/></item>'), 1)\ncheck('boundary 3', solve('<r/>'), 0)\ncheck('boundary 4', solve('<r><item/><item/></r>'), 2)\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":"9a6ee01e684d998fd2b039ae162d09aa859db69e82a5942f4f767a221f04c0db","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return len(ET.fromstring(x).findall('item'))\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<r><a><item/></a></r>'), 1)\ncheck('boundary 2', solve('<item><item/></item>'), 1)\ncheck('boundary 3', solve('<r/>'), 0)\ncheck('boundary 4', solve('<r><item/><item/></r>'), 2)\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":"64f677b9276f38e869f6e6b5b7b3bf846a8c081ebe95963c00230013854dcf38","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport re, unicodedata, json, csv, io, html, base64, binascii, codecs, struct\nfrom urllib.parse import quote, unquote, unquote_to_bytes, urlencode, parse_qsl, urlsplit, urlunsplit\nfrom email.header import decode_header, make_header\nfrom email.utils import getaddresses\nfrom xml.etree import ElementTree as ET\nimport shlex, string, textwrap\n\nN = 1\nobservations = []\ndef solve(x):\n    try:\n        return len(ET.fromstring(x).findall('.//item'))\n    except Exception as exc:\n        return {\"error\": type(exc).__name__}\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('boundary 1', solve('<r><a><item/></a></r>'), 1)\ncheck('boundary 2', solve('<item><item/></item>'), 1)\ncheck('boundary 3', solve('<r/>'), 0)\ncheck('boundary 4', solve('<r><item/><item/></r>'), 2)\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":"xp-xml-descendant-scope","generated_at":"2026-09-29T14:37:23.227711+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A local executable model for consumers of structured text; oracle values are authored literals, not outputs copied from the repaired implementation.","repair":"Implement the complete stated contract, including the boundary fixtures: Count every descendant item element excluding the root itself.","root_cause":"The implementation applies an operation whose text or grammar semantics violate this contract: Count every descendant item element excluding the root itself.","sha256":"3e904c01dc5f7164bb6c78051378bbec1c425e42ca4b968cc9de029d6b01c62c","title":"A direct-child query misses nested elements · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":53.713,"exit_code":1,"observations":[{"actual":1,"check":"boundary 1","expected":1,"passed":true},{"actual":2,"check":"boundary 2","expected":1,"passed":false},{"actual":0,"check":"boundary 3","expected":0,"passed":true},{"actual":2,"check":"boundary 4","expected":2,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": 2, \"expected\": 1, \"passed\": false}, {\"check\": \"boundary 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":52.217,"exit_code":1,"observations":[{"actual":0,"check":"boundary 1","expected":1,"passed":false},{"actual":1,"check":"boundary 2","expected":1,"passed":true},{"actual":0,"check":"boundary 3","expected":0,"passed":true},{"actual":2,"check":"boundary 4","expected":2,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": 0, \"expected\": 1, \"passed\": false}, {\"check\": \"boundary 2\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}], \"passed\": false}\n"},"fixed":{"elapsed_ms":52.941,"exit_code":0,"observations":[{"actual":1,"check":"boundary 1","expected":1,"passed":true},{"actual":1,"check":"boundary 2","expected":1,"passed":true},{"actual":0,"check":"boundary 3","expected":0,"passed":true},{"actual":2,"check":"boundary 4","expected":2,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"boundary 1\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"boundary 2\", \"actual\": 1, \"expected\": 1, \"passed\": true}, {\"check\": \"boundary 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"boundary 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}