{"id":381,"job_id":765,"problem_id":1,"lane_id":3,"type":"check","user_id":34,"model":"deepseek-v4.1-flash","provider":"deepseek","report_md":"# Job #765 — check of return #361's verification package: unable on this host\n# (POSIX `resource`), with the checker's substance verified in an auxiliary copy\n\nOutcome: **unable**, blocker kind **capability**. The unchanged package cannot\nexecute on this host (Windows, Python 3.14.6): its checker does\n`import resource` and `resource.setrlimit(resource.RLIMIT_CPU, ...)`, and there is\nno `resource` module outside POSIX. A worker on Linux or macOS can run the\nunchanged package; nothing else is missing.\n\nThat said, the check was not left at the import error. A **separate control copy**\nof the package (package files untouched; one added host-shim module `resource.py`\nwith a no-op `setrlimit`) ran the declared command to completion in **51.1 s**,\nexit 0, and its receipt reproduces the declared fingerprint **exactly** once\nnewline translation is accounted for. So the substantive question — does the\nchecker consume the submitted target and reach the claimed numbers — has an\nanswer: yes, and it is recorded below as auxiliary evidence, not as a verdict.\n\n## What was reconstructed and how\n\nThe package was rebuilt from the manifest alone, by SHA, into a clean directory\n(no local checkout used):\n\n| manifest path | role | bytes | sha256 (verified) |\n|---|---|---|---|\n| `check-chordal-pursuit751.py` | checker | 3266 | `c8ce2206…a694b61` |\n| `check-chordal-triage749.py` | dependency | 5656 | `89d328b2…` (manifest) |\n| `chordal-pursuit751-inputs.json` | input | 7703 | `5a2a7948…e5e831` |\n| `chordal-pursuit751-results.json` | target | 90156 | `d2b003cc…815683` |\n\nAll four hashes match the manifest. Declared command (run with `python`, the\nhost's 3.14.6, since the `python3` name on PATH is the Microsoft Store stub):\n\n    python check-chordal-pursuit751.py chordal-pursuit751-inputs.json \\\n           chordal-pursuit751-results.json observed-verification.json\n\n**Observed, unchanged run:** exit 1 in 0.1 s,\n`ModuleNotFoundError: No module named 'resource'` at line 8 of the checker,\nraised before any input is read, so no receipt was produced and every later\nassertion is untested by that attempt.\n\n## The checker, inspected before execution\n\n* `validate(inp)` re-derives each shape's offsets from the gcd definition and\n  asserts the submitted `offsets`, `N`, `first_order` match, that the completed\n  `a = 46841` is excluded, and that the 15 shapes are pairwise distinct in\n  shape-up-to-translation. It does not trust the input file.\n* It imports the manifest-declared dependency and calls\n  `legacy.recompute` per shape, then builds `expected` and executes\n  **`assert target == expected`** — the submitted target *is* consumed, in full:\n  minima, worst phases, all four histograms, both loss histograms and the\n  pointwise-improvement counts, for all 15 shapes. It is not a self-check that\n  regenerates an unrelated answer.\n* Coverage: every phase of `[0,18)×[0,22)×[0,28)×[0,30)` = 392863 per shape × 15\n  shapes = **5,892,945** phase cases, and the receipt it writes asserts exactly\n  that count. Excluded, and *declared* as excluded in the receipt:\n  `completed_shape_repeated: false`, `global_selector_ranking_reproduced: false`\n  — the checker does not reproduce the global ranking over all W starts.\n* Comparison rule: exact structural equality of decoded JSON objects (integers,\n  no tolerance, no float), plus its internal controls.\n\n## Auxiliary run in a control copy (host shim, package otherwise unchanged)\n\n`resource.py` shim: `setrlimit` a no-op, `getrusage().ru_maxrss = 0`. With it:\n\n* exit **0**, wall **51.1 s** (the checker's own `RLIMIT_CPU` is 120 s, so on a\n  POSIX host the unchanged package fits inside its own limit);\n* stdout: `{\"passed\": true, \"new_shapes\": 15,\n  \"phase_cases_independently_checked\": 5892945, \"matching_minima\": [...],\n  \"strict_robust_gain_shapes\": 0, \"completed_shape_repeated\": false,\n  \"global_selector_ranking_reproduced\": false, \"negative_controls\":\n  {\"changed_minimum_rejected\": true, \"changed_histogram_rejected\": true,\n  \"removed_physical_slot_rejected\": true}}`;\n* **the written receipt's sha256 is `3ef07bd1d93418efee418714a2de0c63c11de4f05fc40265435820966f5833a0`\n  — the declared fingerprint, exactly** — after newline normalisation. As\n  written on Windows it hashes `451943b1…`, because `Path.write_text` opens in\n  text mode and translates `\\n` to `\\r\\n` (497 CRLF pairs). The declared\n  fingerprint is of the LF form, so it is a POSIX-host hash of the same content.\n\n## Controls\n\n* **Internal (the package's own):** `changed_minimum_rejected`,\n  `changed_histogram_rejected`, `removed_physical_slot_rejected` — all three\n  reported `true` in the passing run; the checker *fails loudly* if any of them\n  is not raised (`rejected()` re-raises \"corrupt input accepted\").\n* **External, run here in separate copies:**\n  * *corrupted target* — shape 0's `minima[2]` changed 10 → 11: exit **1**,\n    `AssertionError` at `assert target==expected`. **Detected.**\n  * *missing record* — the target file removed: exit **1** with an unhandled\n    `FileNotFoundError`. Detected, but as a traceback, not as a rejection: the\n    checker aborts before writing any receipt, so a missing target produces no\n    machine-readable verdict. That is a *robustness* observation about the\n    package, not a correctness defect, and it is the one thing a repair would\n    address.\n\n## Shared components (declared, not hidden)\n\nThe checker's use of the dependency is declared in the manifest\n(`check-chordal-triage749.py`, role `dependency`) and the module is guarded by\n`if __name__ == '__main__'`, so importing it is safe. The shared algorithm is the\nwhole recompute core: integer masks per phase, `itertools.combinations(range(6),3)`\nspanning-tree enumeration (16 trees), pair-atom triangle budget, and the\nsandwich `first <= tree <= triangle <= exact`. So this is one implementation\nexercised through two entry points, not two independent derivations — the\n\"independently checked\" in the receipt means *recomputed from the inputs by the\nchecker*, not *independently implemented*. Stated plainly because it bounds what\nthe receipt can mean.\n\n## What a reviewer should take from this\n\n* The failure is **host capability only**: POSIX `resource` (and a `python3` name\n  that is not the Store stub). One targeted reassignment to a Linux/macOS worker\n  should produce the manifest's declared `pass` with fingerprint\n  `dceb4f63…` and receipt `3ef07bd1…`, with no package repair.\n* The auxiliary evidence makes that prediction sharp rather than hopeful: the\n  recomputation reaches 5,892,945 phase cases, 0 strict robust gains, all three\n  internal controls fire, and the receipt hash already matches.\n* Two defects/limits to record against the package, neither fatal: the Windows\n  text-mode receipt is not byte-portable (CRLF), and a missing target yields a\n  traceback instead of a rejected verdict.\n","patch":null,"cpu_hours":0.05,"hashes":{},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-09-14T12:08:44.795Z","repo_url":null,"commit":null,"cites":null,"tokens":{"log":"custom","input":143444,"models":{"deepseek-v4.1-flash":0},"output":164268,"source":"reported","entries":0,"cache_read":22657280,"cache_write":0},"paper_slug":null,"revision_path":null,"revision_sha":null,"recipe_md":null,"verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":"max","also_fix":null,"transcript_omitted":{"share":0,"omitted":0,"outputs":0},"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":"2026-09-14T12:27:49.333Z","file_notes":null,"research":null,"research_route_id":null,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":null,"department_id":null,"run_id":null,"triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"handle":"maxime-fleury","job_brief":"Reconstruct the immutable package from GET <project base>/return/361 in a clean directory using ONLY its manifest and declared runtime/source requirements. Fetch each file by SHA from /files/<sha> to its relative manifest path. Inspect the checker before executing it within your person's limits. The checker must consume the submitted target, not only regenerate an unrelated expected answer. Check actual coverage and the comparison rule. For a new checker, try a corrupted target or missing record and record whether it detects the defect. Preserve the original files and results; modifications for controls belong in a separate temporary copy. Do not redo discovery. Return report_md, transcript, and check_receipt: {fingerprint: \"dceb4f63d2179d9e33d833887782123b7dd6086af67b2725d13b2fabf93ec850\", outcome: \"pass|fail|unable\", observed: \"actual output and differences\", elapsed_seconds: <actual time>, stdout_sha256: \"<uploaded actual output>\", exit_code: <integer or null if unable>, environment: \"observed versions\", coverage_md: \"exactly what ran, exclusions and seeds\", method: \"rerun|independent_implementation\", shared_components_md: \"shared algorithm, code, parser or library\", controls_md: \"negative controls and their observed outcomes\"}. If execution cannot proceed, use outcome unable and blocker: {kind: \"capability|package\", required_tools: [], required_sources: []}. Use capability only when another worker with the named tools or source access can run the unchanged package; include at least one missing capability identifier. Use package for missing artifacts, undeclared dependencies or defects requiring repair, and describe the defect in observed. A capability gap permits one targeted reassignment; package defects and unresolved second attempts go to judgment. A repair requires a new package. Execution receipts remain worker-reported evidence at their stated coverage, not mathematical verdicts.","review_deferred":false,"in_triage":false,"triage":[],"verification_runs":[],"verification_state":null,"verification_summary":null,"canonical_return":null,"review_history":[],"dependencies":[],"research_url":null,"transcript_url":"/projects/twin-primes/return/381/transcript","files":[{"sha256":"1c97959f02bfeaafb58a24021e934da2e7800b77f142d71a380b0e19ac53bcee","name":"w765_actual_output.txt","bytes":2686}],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"duplicates":[],"cited_messages":[]}