{"claim":{"id":"764b925d-ba87-4762-b8d3-8618442d197b","submission_id":"f9213187-4b3d-4396-ab83-b7966bc9ce37","submission_revision_id":"d1e9e0ae-5f6a-4751-8ee8-4b3108c6bcb2","builder":"builder-01","status":"active","claimed_at":"2026-10-15T15:17:31.585422Z","delivered_at":null,"ended_at":null,"delivery_note":null,"end_reason":null},"task":{"submission_id":"f9213187-4b3d-4396-ab83-b7966bc9ce37","submission_revision_id":"d1e9e0ae-5f6a-4751-8ee8-4b3108c6bcb2","revision_version":1,"submission_status":"under_review","submitted_at":"2026-09-02T03:54:12.369038Z","submitter_name":"Yi Xie","submitter_email":"yix@arizona.edu","task":{"status":"submitted","version":1,"extra_fields":{"difficulty_self_test":{"model":"gpt-5.6-luna","estimated_score":"20–40%"}},"submitted_at":"2026-09-02T03:54:12.369038+00:00","industry_domain":"Software Engineering","task_short_name":"CF1246E","operating_system":"Linux","task_description":"\nObjective: repair a real performance defect in an internal Python Input-leak\nscanner without changing its security semantics. The scanner uses bounded\nexternal spill/merge processing to find protected 256-byte fragments in an\nagent-visible ZIP. On repeated windows, the historical code returns correct\nfindings but performs quadratic work: a 1,000-by-1,000 case makes exactly\n1,003,002 spill-record reads. The repaired repository must remain collision\nsafe, role exact, bounded-memory, deterministic, and cleanup safe while keeping\nthat case below 20,000 reads. Completeness is required only within the existing\n`_MAX_FINDINGS` contract; inputs beyond that contract must retain the existing\nfail-closed rejection rather than be truncated.\n\nStarting state: the exact historical pre-remediation `packaging.py` inside an\nauthentic projection of its internal repository, plus a runnable public\nreproduction. The target is a complete 1662-line module,\nnot a stub.\n\nInstructions: copy `input/starter_repo` to `output/repaired_repo`; preserve the\nfour public exports; fix the general fragment join; use only the Python\nstandard library; do not special-case public bytes or paths. Hidden evaluation\nruns only after the final agent turn.\n\nAgent-visible tree (abbreviated only for unrelated package modules):\n\n```text\nTASK.md\nstarter_repo/README.md\nstarter_repo/pyproject.toml\nstarter_repo/public_tests/fragment_testlib.py\nstarter_repo/public_tests/reproduce_quadratic_join.py\nstarter_repo/src/ale_v2_pipeline/__init__.py\nstarter_repo/src/ale_v2_pipeline/artifact_io.py\nstarter_repo/src/ale_v2_pipeline/model.py\nstarter_repo/src/ale_v2_pipeline/packaging.py\nstarter_repo/src/ale_v2_pipeline/public.py\nstarter_repo/src/ale_v2_pipeline/... (remaining authentic modules)\n```\n\nInspectability excerpt from the starter:\n\n```python\ndef _emit_fragment_digest_group(\n    input_handle: BinaryIO,\n    input_start: int,\n    input_end: int,\n    private_handle: BinaryIO,\n    private_start: int,\n    private_end: int,\n    digest: bytes,\n    payloads: tuple[artifact_io._ArchivePayload, ...],\n    private_records: tuple[_PrivateRecord, ...],\n    findings: list[LeakFinding],\n    seen: set[tuple[object, ...]],\n) -> None:\n    private_handle.seek(private_start)\n    while private_handle.tell() < private_end:\n        private_record = _read_fragment_record(private_handle)\n        if private_record is None:\n            raise GateError(\"fragment matcher private group is truncated\")\n        _private_digest, private_index, private_offset = _FRAGMENT_RECORD.unpack(\n            private_record\n        )\n        if private_index >= len(private_records):\n            raise GateError(\"fragment matcher private index is invalid\")\n        private = private_records[private_index]\n        private_fragment = private.data[\n            private_offset : private_offset + _FRAGMENT_BYTES\n        ]\n        if len(private_fragment) != _FRAGMENT_BYTES:\n            raise GateError(\"fragment matcher private offset is invalid\")\n        roles = sorted(set(private.roles) & _FRAGMENT_ROLES)\n\n        input_handle.seek(input_start)\n        while input_handle.tell() < input_end:\n            input_record = _read_fragment_record(input_handle)\n            if input_record is None:\n                raise GateError(\"fragment matcher Input group is truncated\")\n            _input_digest, payload_index, input_offset = _FRAGMENT_RECORD.unpack(\n                input_record\n            )\n            if payload_index >= len(payloads):\n                raise GateError(\"fragment matcher Input index is invalid\")\n            payload = payloads[payload_index]\n            input_fragment = payload.data[\n                input_offset : input_offset + _FRAGMENT_BYTES\n            ]\n            if len(input_fragment) != _FRAGMENT_BYTES:\n                raise GateError(\"fragment matcher Input offset is invalid\")\n            if input_fragment != private_fragment:\n                continue\n            for role in roles:\n                _append_finding(\n                    findings,\n                    seen,\n                    LeakFinding(\n                        code=\"input.private_fragment\",\n                        member_path=payload.path,\n                        role=role,\n                        private_path=private.path,\n                        offset=input_offset,\n                        sha256=digest.hex(),\n                    ),\n                )\n\n\ndef _merge_join_fragment_runs(\n    input_path: Path,\n    private_path: Path,\n    payloads: tuple[artifact_io._ArchivePayload, ...],\n    private_records: tuple[_PrivateRecord, ...],\n    findings: list[LeakFinding],\n    seen: set[tuple[object, ...]],\n) -> None:\n```\n\nPublic commands from `output/repaired_repo`:\n\n```bash\npython3 -m compileall -q src\npython3 public_tests/reproduce_quadratic_join.py --repo .\n```\n","software_licensing":"Free/Open Source","evaluation_criteria":null,"verification_method":"\nObjective: repair a real performance defect in an internal Python Input-leak\nscanner without changing its security semantics. The scanner uses bounded\nexternal spill/merge processing to find protected 256-byte fragments in an\nagent-visible ZIP. On repeated windows, the historical code returns correct\nfindings but performs quadratic work: a 1,000-by-1,000 case makes exactly\n1,003,002 spill-record reads. The repaired repository must remain collision\nsafe, role exact, bounded-memory, deterministic, and cleanup safe while keeping\nthat case below 20,000 reads. Completeness is required only within the existing\n`_MAX_FINDINGS` contract; inputs beyond that contract must retain the existing\nfail-closed rejection rather than be truncated.\n\nStarting state: the exact historical pre-remediation `packaging.py` inside an\nauthentic projection of its internal repository, plus a runnable public\nreproduction. The target is a complete 1662-line module,\nnot a stub.\n\nInstructions: copy `input/starter_repo` to `output/repaired_repo`; preserve the\nfour public exports; fix the general fragment join; use only the Python\nstandard library; do not special-case public bytes or paths. Hidden evaluation\nruns only after the final agent turn.\n\nAgent-visible tree (abbreviated only for unrelated package modules):\n\n```text\nTASK.md\nstarter_repo/README.md\nstarter_repo/pyproject.toml\nstarter_repo/public_tests/fragment_testlib.py\nstarter_repo/public_tests/reproduce_quadratic_join.py\nstarter_repo/src/ale_v2_pipeline/__init__.py\nstarter_repo/src/ale_v2_pipeline/artifact_io.py\nstarter_repo/src/ale_v2_pipeline/model.py\nstarter_repo/src/ale_v2_pipeline/packaging.py\nstarter_repo/src/ale_v2_pipeline/public.py\nstarter_repo/src/ale_v2_pipeline/... (remaining authentic modules)\n```\n\nInspectability excerpt from the starter:\n\n```python\ndef _emit_fragment_digest_group(\n    input_handle: BinaryIO,\n    input_start: int,\n    input_end: int,\n    private_handle: BinaryIO,\n    private_start: int,\n    private_end: int,\n    digest: bytes,\n    payloads: tuple[artifact_io._ArchivePayload, ...],\n    private_records: tuple[_PrivateRecord, ...],\n    findings: list[LeakFinding],\n    seen: set[tuple[object, ...]],\n) -> None:\n    private_handle.seek(private_start)\n    while private_handle.tell() < private_end:\n        private_record = _read_fragment_record(private_handle)\n        if private_record is None:\n            raise GateError(\"fragment matcher private group is truncated\")\n        _private_digest, private_index, private_offset = _FRAGMENT_RECORD.unpack(\n            private_record\n        )\n        if private_index >= len(private_records):\n            raise GateError(\"fragment matcher private index is invalid\")\n        private = private_records[private_index]\n        private_fragment = private.data[\n            private_offset : private_offset + _FRAGMENT_BYTES\n        ]\n        if len(private_fragment) != _FRAGMENT_BYTES:\n            raise GateError(\"fragment matcher private offset is invalid\")\n        roles = sorted(set(private.roles) & _FRAGMENT_ROLES)\n\n        input_handle.seek(input_start)\n        while input_handle.tell() < input_end:\n            input_record = _read_fragment_record(input_handle)\n            if input_record is None:\n                raise GateError(\"fragment matcher Input group is truncated\")\n            _input_digest, payload_index, input_offset = _FRAGMENT_RECORD.unpack(\n                input_record\n            )\n            if payload_index >= len(payloads):\n                raise GateError(\"fragment matcher Input index is invalid\")\n            payload = payloads[payload_index]\n            input_fragment = payload.data[\n                input_offset : input_offset + _FRAGMENT_BYTES\n            ]\n            if len(input_fragment) != _FRAGMENT_BYTES:\n                raise GateError(\"fragment matcher Input offset is invalid\")\n            if input_fragment != private_fragment:\n                continue\n            for role in roles:\n                _append_finding(\n                    findings,\n                    seen,\n                    LeakFinding(\n                        code=\"input.private_fragment\",\n                        member_path=payload.path,\n                        role=role,\n                        private_path=private.path,\n                        offset=input_offset,\n                        sha256=digest.hex(),\n                    ),\n                )\n\n\ndef _merge_join_fragment_runs(\n    input_path: Path,\n    private_path: Path,\n    payloads: tuple[artifact_io._ArchivePayload, ...],\n    private_records: tuple[_PrivateRecord, ...],\n    findings: list[LeakFinding],\n    seen: set[tuple[object, ...]],\n) -> None:\n```\n\nPublic commands from `output/repaired_repo`:\n\n```bash\npython3 -m compileall -q src\npython3 public_tests/reproduce_quadratic_join.py --repo .\n```\n","software_and_version":"CPython 3.11.x (verified on 3.11.7)","specific_requirements":null,"expected_completion_time":null},"files":[{"file_id":"78aee64a-7706-4fde-b99d-9343ad088182","filename":"ale_input_leak_fragment_join_repair_01_input.zip","category":"input_materials","content_type":"application/zip","size_bytes":980785},{"file_id":"61d0892e-5c90-4e10-b647-eec810a57a4b","filename":"ale_input_leak_fragment_join_repair_01_reference.zip","category":"reference_output","content_type":"application/zip","size_bytes":6094878},{"file_id":"25c82a15-cce3-4320-96c2-69913a748d06","filename":"gpt_5_6_luna_exact_candidate.zip","category":"difficulty_self_test_evidence","content_type":"application/zip","size_bytes":977935}],"deep_review":{"overall_verdict":"Strong Accept","review_text":"**Overall Verdict:** Strong Accept — The submission is complete, technically rigorous, safely reachable, and supported by a coherent expert repair, adversarial controls, hidden evaluation, provenance, and verification evidence.\n\n**Completeness Check:**\n- Instruction: Complete — Defines the repository transformation, preserved exports, semantic invariants, performance threshold, bounded-memory requirement, cleanup behavior, output location, and public verification commands.\n- Inputs: Complete — Supplies the full 1,662-line historical target module within a runnable 36-file repository and a deterministic public reproduction.\n- Toolchain: Complete — Requires only CPython 3.11 on Linux and the standard library; the evaluator's unprivileged Linux and Landlock requirements are feasible on a suitable ordinary machine.\n- Reference output: Complete — Includes the expert repaired repository, final approved source, five negative controls, provenance records, and verification results.\n- Rubric: Complete — Thirteen objective evaluator groups cover compilation/API preservation, repeated-window complexity, collision safety, roles and identities, ordering, external runs, cleanup failures, unrelated security behavior, fail-closed limits, external memory use, validation, and immutable freeze behavior. Final scoring is binary, consistent with the exact repair contract.\n\n**File and Task Reachability:**\nThe attachment set is `reachable`, and the end-to-end task is `reachable`. I inspected all three manifest attachments: `ale_input_leak_fragment_join_repair_01_input.zip`, `ale_input_leak_fragment_join_repair_01_reference.zip`, and `gpt_5_6_luna_exact_candidate.zip`. Their downloaded sizes match the manifest; all are readable ZIP containers with valid integrity checks, no encryption, duplicate names, unsafe paths, links, device entries, or excessive expansion. The contents comprise regular ASCII or UTF-8 Python, Markdown, TOML, and JSON files.\n\nRepresentative and material files inspected include `TASK.md`, both public-test files, `pyproject.toml`, the starter, expert, approved, control, and self-test versions of `packaging.py`, all control READMEs, `grade.py`, `hidden_fragment_tests.py`, `candidate_probe.py`, `probe_supervisor.py`, `PROVENANCE.md`, `TARGET_REGION_COMPARISON.md`, `HISTORICAL_INPUT_FREEZE_REPORT.md`, `VERIFICATION.md`, and `LINUX_VERIFICATION.json`. The recorded input, expert, evaluator, self-test archive, and approved-region hashes reproduce from the supplied files. Non-target surrounding package modules were inventoried and type-checked but not reviewed line by line. No uploaded program was executed; runtime claims were assessed through static evaluator inspection and submitted execution records.\n\nThe contributor can copy the supplied starter repository, repair the general fragment join, run compilation and the public reproduction, and submit the repaired repository. The protected evaluator can then test semantics, performance, memory, cleanup, isolation, and freeze behavior against the supplied expert and negative controls. License keys, accounts, tokens, and other credentials are not required from the contributor. Confidential, proprietary, or internal material may be evaluated as submitted evidence without requiring additional disclosure.\n\n**Special Screening:**\nNone. External public-identifiability searching was unavailable under the evidence-only review constraint; the supplied provenance identifies this as a preexisting internal production defect and explicitly states that it was neither a public benchmark nor an injected fixture.\n\n**Recommended Changes:**\nThe submission already provides strong task instructions, authentic-looking source provenance, a collision-safe bounded-memory reference repair, evaluator isolation, adversarial controls, and reproducible verification metadata. No changes are required.","reviewed_at":"2026-09-02T04:02:26.610270Z"},"claim":{"id":"764b925d-ba87-4762-b8d3-8618442d197b","submission_id":"f9213187-4b3d-4396-ab83-b7966bc9ce37","submission_revision_id":"d1e9e0ae-5f6a-4751-8ee8-4b3108c6bcb2","builder":"builder-01","status":"active","claimed_at":"2026-10-15T15:17:31.585422Z","delivered_at":null,"ended_at":null,"delivery_note":null,"end_reason":null}},"revision_is_current":true}