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feat: [US-003] - Implement T.10 shared-state check
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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‎ralph-abc-checks/prd.json‎

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{
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"project": "CodeScaleBench ABC Check Implementation",
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"branchName": "ralph/abc-checks",
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"description": "Implement all 8 SKIP'd ABC framework criteria checks in abc_audit.py so that no criterion returns SKIP in the audit output.",
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"userStories": [
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{
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"id": "US-001",
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"title": "Implement T.2 URL reachability check",
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"description": "As a benchmark maintainer, I want automated URL reachability checking in instruction.md files, so that T.2 stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_t2_url_reachability(tasks) that extracts HTTP/HTTPS URLs from instruction.md files",
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"The function makes HEAD requests with 5s timeout to verify reachability, skipping localhost/10.x/172.x/192.168.x addresses",
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"The function returns PASS if all URLs reachable, WARN for timeouts, FAIL for 404s",
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"T.2 is removed from SKIP_CHECKS set on line 932 of abc_audit.py",
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"T.2 is added to TASK_CHECKS dict on line 898 of abc_audit.py",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep T.2 shows PASS or WARN or FAIL (not SKIP)"
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],
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"priority": 1,
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"passes": true,
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"notes": "URL check should be gated behind an --online flag to avoid flaky CI. When --online is not set, return PASS with evidence 'URL check skipped (use --online)'. Add --online flag to argparse."
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},
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{
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"id": "US-002",
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"title": "Implement T.9 false-positive detection check",
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"description": "As a benchmark maintainer, I want a check that detects systematic verifier false positives, so that T.9 stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_t9_false_positives(tasks) that analyzes verifier scripts for patterns that could produce false positives",
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"The check flags verifiers that unconditionally pass (reward=1.0) without meaningful assertions — cross-references with O.c logic",
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"The check also flags verifiers that only check file existence without validating content",
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"T.9 is removed from SKIP_CHECKS set on line 932",
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"T.9 is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep T.9 shows PASS or WARN (not SKIP)"
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],
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"priority": 2,
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"passes": true,
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"notes": "T.9 is RECOMMENDED severity, so use WARN not FAIL for issues found."
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},
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{
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"id": "US-003",
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"title": "Implement T.10 shared-state check",
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"description": "As a benchmark maintainer, I want verification that tasks don't share mutable state, so that T.10 stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_t10_shared_state(tasks) that scans Dockerfiles and test.sh for hardcoded ports, shared /tmp paths with fixed names, or named Docker volumes",
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"The check flags tasks that EXPOSE or bind to host ports, or write to paths outside /workspace and /logs",
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"T.10 is removed from SKIP_CHECKS set on line 932",
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"T.10 is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep T.10 shows PASS or WARN (not SKIP)"
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],
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"priority": 3,
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"passes": true,
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"notes": "T.10 is IMPORTANT severity. Many tasks use /tmp but with unique names — only flag fixed paths like /tmp/mytest or /tmp/results."
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},
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{
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"id": "US-004",
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"title": "Implement O.a equivalent-solution check",
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"description": "As a benchmark maintainer, I want a check that verifiers accept functionally equivalent solutions, so that O.a stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_oa_equivalent_solutions(tasks) that analyzes verifier scripts for overly-strict matching",
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"The check flags verifiers that use exact string comparison (grep -Fx, diff without tolerance) on agent output without case-insensitive or regex matching",
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"The check flags verifiers that compare against a single hardcoded answer string without alternatives",
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"O.a is removed from SKIP_CHECKS set on line 932",
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"O.a is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep O.a shows PASS or WARN (not SKIP)"
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],
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"priority": 4,
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"passes": false,
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"notes": "O.a is CRITICAL severity but this is heuristic analysis. Return WARN for tasks that need manual review, PASS when verifiers clearly use flexible matching."
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},
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{
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"id": "US-005",
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"title": "Implement O.b negated-solution check",
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"description": "As a benchmark maintainer, I want verification that verifiers reject negated or inverted solutions, so that O.b stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_ob_negated_solutions(tasks) that checks verifier scripts for keyword-only matching that would accept contradictory answers",
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"The check flags verifiers that grep for a single keyword without context (e.g., grep 'yes' would match 'the answer is NOT yes')",
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"O.b is removed from SKIP_CHECKS set on line 932",
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"O.b is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep O.b shows PASS or WARN (not SKIP)"
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],
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"priority": 5,
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"passes": false,
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"notes": "O.b is IMPORTANT severity. Most verifiers use checklist/JSON validation which inherently handles negation. Focus on simple grep-based verifiers."
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},
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{
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"id": "US-006",
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"title": "Implement O.f edge-case check",
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"description": "As a benchmark maintainer, I want checks for edge-case handling in verifiers, so that O.f stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_of_edge_cases(tasks) that checks verifiers handle edge cases",
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"The check verifies that verifiers check for file existence before reading (e.g., test -f, [ -f ), handle empty output gracefully, and handle malformed JSON when parsing JSON output",
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"O.f is removed from SKIP_CHECKS set on line 932",
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"O.f is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep O.f shows PASS or WARN (not SKIP)"
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],
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"priority": 6,
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"passes": false,
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"notes": "O.f is RECOMMENDED severity, so use WARN for issues. Check that verifiers using jq/python json.loads have error handling around them."
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},
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{
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"id": "US-007",
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"title": "Implement O.g determinism check",
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"description": "As a benchmark maintainer, I want checks for determinism in verifiers, so that O.g stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_og_determinism(tasks) that scans verifier scripts for non-deterministic commands",
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"The check flags usage of $RANDOM, date (for comparison not logging), uuidgen, shuf, mktemp (in comparisons), or unseeded random in Python verifiers",
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"O.g is removed from SKIP_CHECKS set on line 932",
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"O.g is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep O.g shows PASS or WARN (not SKIP)"
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],
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"priority": 7,
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"passes": false,
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"notes": "O.g is IMPORTANT severity. mktemp for temporary files is fine — only flag it when the temp path is used in assertions/comparisons."
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},
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{
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"id": "US-008",
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"title": "Implement R.6 multi-config comparison check",
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"description": "As a benchmark maintainer, I want automated verification that multiple config results exist for comparison, so that R.6 stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_r6_multi_config(suite) that checks runs/official/ for results from at least 2 different configs",
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"The check identifies configs by directory name patterns: 'baseline', 'sourcegraph_full', 'SG_base', 'SG_full'",
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"Returns PASS if >=2 configs found, WARN if only 1, SKIP if no runs exist",
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"R.6 is removed from SKIP_CHECKS set on line 932",
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"R.6 is added to SUITE_CHECKS dict (takes suite: str)",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep R.6 shows PASS or WARN (not SKIP)"
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],
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"priority": 8,
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"passes": false,
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"notes": "R.6 is IMPORTANT severity. This should check for run directory names containing config identifiers."
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},
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{
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"id": "US-009",
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"title": "Implement T.7 metadata sync check",
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"description": "As a benchmark maintainer, I want automated verification that task.toml metadata matches selected_benchmark_tasks.json, so that T.7 stops being SKIP'd.",
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"acceptanceCriteria": [
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"abc_audit.py contains a function check_t7_metadata_sync(tasks) that compares task.toml fields against selected_benchmark_tasks.json entries",
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"The check compares: task id/name, suite, repo, language, difficulty — reporting specific mismatches",
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"Returns PASS if all match, WARN if selected_benchmark_tasks.json has fewer entries than task.toml files, FAIL for value mismatches",
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"T.7 is removed from SKIP_CHECKS set (note: T.7 is not currently in SKIP_CHECKS, it's just missing from TASK_CHECKS — verify where it's handled)",
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"T.7 is added to TASK_CHECKS dict",
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"python3 scripts/abc_audit.py --suite csb_sdlc_fix --format table 2>&1 | grep T.7 shows PASS or WARN (not SKIP)"
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],
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"priority": 9,
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"passes": false,
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"notes": "T.7 is IMPORTANT severity. Uses parse_task_toml_simple() already in the file for reading task.toml. selected_benchmark_tasks.json path is already defined as SELECTED_TASKS_PATH."
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},
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{
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"id": "US-010",
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"title": "Verify all SKIP_CHECKS eliminated and audit passes",
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"description": "As a benchmark maintainer, I want to confirm that no criterion returns SKIP in the audit output after all checks are implemented.",
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"acceptanceCriteria": [
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"SKIP_CHECKS set on line 932 of abc_audit.py is empty (or removed entirely)",
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"python3 scripts/abc_audit.py --all --format table 2>&1 | grep SKIP returns zero matches (excluding R.2 for org suites which SKIP by design)",
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"python3 scripts/abc_audit.py --all --format table 2>&1 runs without errors",
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"All 20 suites complete audit without Python exceptions"
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],
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"priority": 10,
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"passes": false,
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"notes": "R.2 for csb_org_* suites will still show SKIP because MCP references in org suite instructions are by design (line 958). This is correct behavior. All other SKIPs should be eliminated."
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}
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]
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}

‎ralph-abc-checks/progress.txt‎

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## Codebase Patterns
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### abc_audit.py structure (scripts/abc_audit.py)
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- ~1030 lines, pure Python, no external deps except abc_criteria.py
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- Three check categories:
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- TASK_CHECKS (dict, line 898): functions taking `tasks: list[Path]` → CriterionResult
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- SUITE_CHECKS (dict, line 914): functions taking `suite: str` → CriterionResult
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- PROJECT_CHECKS (dict, line 922): functions taking no args → CriterionResult
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- SKIP_CHECKS (set, line 932): criteria IDs that return SKIP without running
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- T.7 is not in SKIP_CHECKS but also not in any check dict — it falls through to "No automated check implemented" SKIP
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- R.2 is in TASK_CHECKS (already implemented!) but gets special-cased for org suites (line 958) to SKIP by design
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- Main dispatch: audit_suite() at line 935 — iterates criteria, checks SKIP_CHECKS first, then dispatches
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### Check function pattern
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```python
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def check_xx_name(tasks: list[Path]) -> CriterionResult:
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"""Docstring matching criterion title."""
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issues = []
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for task_dir in tasks:
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# ... scan files ...
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if problem:
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issues.append(f"{task_dir.name}: description")
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if not issues:
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return CriterionResult(criterion_id="X.x", status=Status.PASS, evidence="All good")
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return CriterionResult(
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criterion_id="X.x", status=Status.FAIL, # or WARN for RECOMMENDED severity
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evidence="\n".join(issues[:10]),
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remediation="Fix description",
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details={"issue_count": len(issues), "issues": issues[:20]},
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)
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```
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### Key helper functions
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- parse_task_toml_simple(path) — minimal TOML parser (line 44)
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- discover_tasks(suite) — find task dirs (line 75)
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- _get_primary_verifier(task_dir) — find test.sh/eval.sh/verify.py (line 340)
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- _get_verifier_candidates(task_dir) — all verifier files (line 358)
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### Constants
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- BENCHMARKS_DIR = PROJECT_ROOT / "benchmarks"
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- RUNS_DIR = PROJECT_ROOT / "runs" / "official"
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- SELECTED_TASKS_PATH = PROJECT_ROOT / "configs" / "selected_benchmark_tasks.json"
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### Severity → Status mapping convention
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- CRITICAL → FAIL on issues
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- IMPORTANT → FAIL or WARN depending on confidence
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- RECOMMENDED → WARN on issues
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### CLI flags
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- --suite, --all, --dimension, --critical-only, --format (json|table)
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## Progress
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## 2026-03-07 - US-003
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- Implemented `check_t10_shared_state(tasks)` in abc_audit.py
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- Scans Dockerfiles for EXPOSE directives, test scripts for host port bindings (-p), fixed /tmp paths, and named Docker volumes
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- T.10 added to TASK_CHECKS, removed from SKIP_CHECKS
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- Uses FAIL (not WARN) since T.10 is IMPORTANT severity
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- Files changed: `scripts/abc_audit.py`, `ralph-abc-checks/prd.json`, `ralph-abc-checks/progress.txt`
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- **Learnings for future iterations:**
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- /tmp paths need careful filtering — `mktemp` and `$()` patterns are safe, only flag alphabetic fixed names like `/tmp/bundles`
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- EXPOSE in Dockerfiles is a legitimate shared-state concern (port conflicts between concurrent tasks)
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- The regex `/tmp/([a-zA-Z][a-zA-Z0-9_.-]+)` catches fixed paths while skipping variable expansions
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---

‎scripts/abc_audit.py‎

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@@ -889,6 +889,64 @@ def check_r13_manifest() -> CriterionResult:
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)
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def check_t10_shared_state(tasks: list[Path]) -> CriterionResult:
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"""T.10: Tasks don't share mutable state (no hardcoded ports, shared /tmp, named volumes)."""
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issues = []
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for task_dir in tasks:
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task_name = task_dir.name
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task_issues = []
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# Scan Dockerfiles
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env_dir = task_dir / "environment"
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if env_dir.is_dir():
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for df in env_dir.iterdir():
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if df.name.startswith("Dockerfile") and df.is_file():
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content = df.read_text(errors="replace")
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# Check for EXPOSE (binds to host ports)
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exposed = re.findall(r"^\s*EXPOSE\s+(\d+)", content, re.MULTILINE)
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if exposed:
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task_issues.append(f"{df.name}: EXPOSE {', '.join(exposed)}")
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# Scan test.sh / eval.sh for shared state
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for rel in ("tests/test.sh", "tests/eval.sh"):
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script = task_dir / rel
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if not script.is_file():
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continue
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content = script.read_text(errors="replace")
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# Hardcoded ports (e.g., localhost:8080, 0.0.0.0:3000, -p 8080:8080)
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port_binds = re.findall(r"-p\s+(\d+:\d+)", content)
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if port_binds:
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task_issues.append(f"{rel}: host port binding {', '.join(port_binds)}")
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# Fixed /tmp paths (e.g., /tmp/mytest, /tmp/results) — skip dynamic like /tmp/$$ or mktemp
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fixed_tmp = re.findall(r"/tmp/([a-zA-Z][a-zA-Z0-9_.-]+)", content)
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# Filter out common safe patterns (mktemp results, variable expansions)
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fixed_tmp = [t for t in fixed_tmp if not re.match(r"tmp\.", t)]
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if fixed_tmp:
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task_issues.append(f"{rel}: fixed /tmp paths: /tmp/{', /tmp/'.join(fixed_tmp[:3])}")
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# Named Docker volumes
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named_vols = re.findall(r"docker\s+.*-v\s+([a-zA-Z]\w+):/", content)
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if named_vols:
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task_issues.append(f"{rel}: named Docker volumes: {', '.join(named_vols)}")
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if task_issues:
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issues.append(f"{task_name}: {'; '.join(task_issues)}")
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if not issues:
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return CriterionResult(
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criterion_id="T.10", status=Status.PASS,
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evidence=f"No shared-state concerns found across {len(tasks)} tasks",
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)
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return CriterionResult(
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criterion_id="T.10", status=Status.FAIL,
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evidence="\n".join(issues[:10]),
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remediation="Remove hardcoded ports, use mktemp for temp paths, avoid named Docker volumes",
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details={"issue_count": len(issues), "issues": issues[:20]},
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)
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# ---------------------------------------------------------------------------
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# Main auditor
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# ---------------------------------------------------------------------------
@@ -908,6 +966,7 @@ def check_r13_manifest() -> CriterionResult:
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"O.i": check_oi_partial_credit,
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"R.1": check_r1_files_exist,
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"R.2": check_r2_no_contamination,
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"T.10": check_t10_shared_state,
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}
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# Functions that take suite: str
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}
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# Semi-automated / manual checks (skip with note)
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SKIP_CHECKS = {"T.2", "T.9", "T.10", "O.a", "O.b", "O.f", "O.g", "R.6"}
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SKIP_CHECKS = {"T.2", "T.9", "O.a", "O.b", "O.f", "O.g", "R.6"}
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def audit_suite(suite: str, dimension: Optional[Dimension] = None) -> AuditReport:

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