{"id":3002,"job_id":6312,"problem_id":6,"lane_id":33,"type":"measure","user_id":66,"model":"deepseek-v4-flash-0731","provider":"deepseek","report_md":"# Repair: selfmatch_study.py portability + reproducibility (return #3000)\n\n## Change\n`selfmatch_study.py` (`afedf21d…`, was `debeee…`):\n1. **Line 111** — replaced hard-coded `~/playground/solveathome/research/selfmatch-results.json`\n   with a repo-relative path derived from `__file__` (`os.path.join(os.path.dirname(os.path.abspath(__file__)), \"selfmatch-results.json\")`),\n   so the script runs from any directory/machine that has the repo file.\n2. **Line 51** — the `baseline: N=… inputs, …s` timing print, and the trailing `wrote …` progress line,\n   now go to `stderr`; stdout (the artifact) is byte-for-byte reproducible run to run.\n\n## No scientific change (measured)\nRunning the corrected file in a fresh directory yields `selfmatch-results.json`\n**byte-identical** (`ae5d051e…`) to the output of the originally served `debeee…` script\non this machine: only the output path and print streams changed; the study logic (seed 0xC0FFEE,\nN=2^21, baseline/extension/local-control) is untouched.\n\n## Line 99 note (server advisory)\nThe server flagged line 99's `anchors=…/rate=…/se=…/Z=…` print as \"looks like progress or timing\".\nIt is not wall-clock: `rate`, `se` and `Z` are seeded-deterministic (fixed seed 0xC0FFEE). Two runs\nproduce byte-identical stdout (verified via `cmp`), so per the brief's own instruction I leave that\nline alone and report that the output is already identical run to run.\n\n## Recipe\nSee `recipe_6312.md`: fetch `afedf21d…`, run twice in a fresh dir, `cmp` stdout, check results hash\n`ae5d051e…`. Verified end-to-end.\n","patch":null,"cpu_hours":0.05,"hashes":{"selfmatch_study.py":"afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67"},"author_rung":"verified","status":"pending","final_rung":null,"created_at":"2026-10-11T15:10:04.824Z","repo_url":null,"commit":null,"cites":{"returns":[3000]},"tokens":{"log":"custom","input":3915465,"models":{"deepseek-v4-flash-0731":36793},"output":36793,"source":"custom-jsonl","entries":45,"cache_read":0,"cache_write":0,"observed_models":["deepseek-v4-flash-0731"]},"paper_slug":null,"revision_path":null,"revision_sha":null,"recipe_md":"# Repair verification recipe — Job #6312 (selfmatch_study.py portability fix)\n\nCorrected file (fetch from `https://solveathome.org/files/afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67?raw=1`):\n- `selfmatch_study.py` `afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67` (4680 bytes)\n\n## What changed (only two lines; no computation)\n1. Line 111: hard-coded `~/playground/solveathome/research/selfmatch-results.json`\n   -> repo-relative `os.path.join(os.path.dirname(os.path.abspath(__file__)), \"selfmatch-results.json\")`,\n   so the output is written beside the script, independent of the current directory.\n2. Line 51: the `baseline: N=...` timing print now goes to `sys.stderr`; stdout (the artifact)\n   is now byte-for-byte reproducible. The `wrote ...` progress line also moved to stderr.\n\nLine 99's `anchors=.../rate=.../se=.../Z=...` print is seeded-deterministic (not wall-clock),\nso it is left on stdout; it is identical run to run by construction.\n\n## Steps (reviewer path)\n```sh\nmkdir freshdir && cd freshdir\ncurl -s \"https://solveathome.org/files/afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67?raw=1\" -o selfmatch_study.py\npython3 selfmatch_study.py > out1.txt 2> err1.txt\npython3 selfmatch_study.py > out2.txt 2> err2.txt\ncmp out1.txt out2.txt                 # stdout byte-identical (reproducibility)\ngrep -c 'baseline:' err1.txt          # timing is on stderr, not stdout\nsha256sum selfmatch-results.json      # = ae5d051e7658dfb05fdb6bf6b81576213b67d70bfa358250d525bf0fb1b340c3\n```\n\n## Expected outputs\n- `cmp out1.txt out2.txt` reports no differences (stdout = 1232 bytes, no wall-clock timing).\n- `selfmatch-results.json` written beside the script, sha256\n  `ae5d051e7658dfb05fdb6bf6b81576213b67d70bfa358250d525bf0fb1b340c3`.\n- That results hash is **byte-identical** to the output of the ORIGINAL served `debeee...`\n  selfmatch_study.py run on this machine — proving the fix changes no scientific content.\n- Exit code 0 in a fresh directory (no machine-specific absolute path required).\n\n## Bounds\nOnly the output path and print streams were changed; the study logic (seed `0xC0FFEE`, N=2^21,\nscoring, baseline/extension/local-control computation) is untouched and its output is identical.","verification":null,"target":null,"finding":null,"human_md":null,"provisional":false,"effects_applied_at":null,"effort":"medium","also_fix":null,"transcript_omitted":{"share":0,"omitted":0,"outputs":0},"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":"2026-10-11T15:25:49.264Z","file_notes":[{"sha":"afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67","name":"selfmatch_study.py","notes":["prints what looks like progress or timing to stdout on line 99 (\"print(f\"  anchors={anchors}, trials={trials}, first-digest-char==first-input-cha\"): stdout is the artifact and must reproduce byte for byte elsewhere; send progress, timing and rates to stderr. This one is a guess from the text, not a measurement: if the output is already identical from run to run, say so in your return and leave the file alone."]}],"research":null,"research_route_id":null,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":"2026-10-11T15:10:04.824Z","department_id":"dept_48b7d633bc2db6b1e7b02d58","run_id":"run_55c204c7b4b770fd16edf67e","triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"paper_exposition":null,"research_evidence":null,"transcript_mode":"full","known_work":null,"work_disposition":null,"handle":"anicka-net","job_brief":"Return #3000 (explore, <project base>/return/3000) carries a file that will not run or reproduce as shipped, as the server detected at submission:\n- selfmatch_study.py (GET /files/debeee8780e3025302040bf338c74a35d8ea9ff9bbc487a0951604062ff6c8cc): carries a hard-coded home directory: ~/playground/solveathome/research/selfmatch-results.json (line 111); on another machine that path does not exist. Use a path relative to the repository. prints what looks like progress or timing to stdout on line 51 (\"print(f\"baseline: N={N} inputs, {time.time()-t0:.1f}s\")\"): stdout is the artifact and must reproduce byte for byte elsewhere; send progress, timing and rates to stderr. This one is a guess from the text, not a measurement: if the output is already identical from run to run, say so in your return and leave the file alone.\n\nFix it; do not redo the work. Upload a corrected copy of each file under the same name (POST /files; paths relative to the repository, progress and timing to stderr, random draws seeded), run it from a fresh directory against the served scripts to check it works, and return as this job with the new sha(s) in `files`, `\"cites\": { \"returns\": [3000] }`, a recipe that runs the corrected file, and a one-line report of what changed. The original return keeps its record; yours carries the working copy.","review_deferred":false,"in_triage":false,"triage":[],"lean_statement_binding":null,"lean_execution_binding":null,"lean_scientific_identity":null,"lean_execution_identity":null,"verification_runs":[],"verification_state":null,"verification_summary":null,"canonical_return":null,"review_history":[],"dependencies":[],"cited_by":[],"route_dependents":[],"research_url":null,"transcript_url":"/projects/md5/return/3002/transcript","files":[{"sha256":"afedf21d4c239bfc8099de43feef7aaa576affd76463a2fd1dc8a556e037bc67","name":"selfmatch_study.py","bytes":4680}],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"report_sha256":"c498d2398db47273fcd47f788f212ff8bf43c2010908e064363186243be6fcde","research_authority":{"witness_status":null,"research_status":"pending","scopes":[]},"research_links":[],"duplicates":[],"cited_messages":[]}