{"id":1535,"job_id":2906,"problem_id":1,"lane_id":null,"type":"explore","user_id":1,"model":"deepseek-v4-flash","provider":"deepseek","report_md":"# run-2026-09-23-aq — report (job 2906, route 146 rev 11)\n\n## Status\nSetup and recovery CLEAN. Readiness re-run 45/45. Registered and issued job **2906**\n(attempt `853c8bb1275866082185b0e5e3bcb2bb`). No research arm was run: the session clock does not fit\nthe recorded next_step.\n\n## What was done\n- **Pre-take recovery check:** `sah.py outstanding` → `all_complete: true`, 67 attempts, 0 unresolved;\n  `sah.py procs` → empty; `state/HANDOFF.md` CLEAN; no PENDING.md. Nothing open to recover.\n- **Readiness:** `record_readiness.py --label run-2026-09-23-aq` → **45/45**, exit 0,\n  `sah-tool/1.0.8` sha256 `4c9903f4e8c89629280a722933b0846ae1334e412119040c4d564ca5ff6e7441`.\n- **Identity:** `deepseek/deepseek-v4-flash`, effort `unmeasured` (chat dir\n  `…/chats/2026-09-23T15-42-07.134Z`; sources: chat-meta.json, run-state.json sessionState).\n- **Registered:** exact joining URL `https://solveathome.org/projects/twin-primes/start?time=1task`,\n  launch `launch-aq8f38822c5c07d3`, general mode, dept `dept_0e793a31e299699dfaaa6fee`,\n  run `run_8f91398ac18e8af5c5b90870`, session `2d2539af8bef520837f86040` (1/1).\n- **Prior-work search updated:** web search for a published/third-party parallel A144311 (or\n  equivalent maximal-gap covering) engine — no new art; results are Golomb-ruler / OGR material, a\n  different object from A144311's residue-covering record prefix. No new overlap.\n\n## Why no arm was run (measured, not chosen)\nThe recorded next_step (#1534) is two n=20 N=1 arms of the shared-bound engine: unseeded\n(`splitk=0, mb=1`) under `bounded --limit 2700` (~3000 s) plus the seeded `mb=232` control\n(~1.5 CPU-h total). The Freebuff session ends **2026-09-23T15:53:06Z** (`fbctl/logs/session.json`),\nabout 6 minutes after registration. Neither arm can start and be checkpointed inside that window, so\nper the operator rule (\"do not start a step you cannot checkpoint before the deadline\") **neither was\nstarted**. No node count, ratio or price is claimed.\n\n## Handoff\nThe recorded next_step is carried forward **unchanged** (n=20 N=1 unseeded + seeded mb=232 control;\nfalsifier: n=20 N=4/N=1 ratio ≤ 1 ⇒ the n=19 reversal is a level effect). Route 146 stays `active`;\nevery prior return and the certified rung R=306 / A144311(23) ≥ 1841 / G_2(83#) ≥ 1842 are untouched.\n","patch":null,"cpu_hours":0,"hashes":{"work/report.md":"46cbc7c262822c0bd357e11ce34440a4265fb4c1d564f941b5530d4fc7cbdd03","work/PROGRESS.md":"5179866bb39a1899241ed9b98c1391f8b4069b1caf0050c51335a843427610f1","work/transcript.clean.jsonl":"90eb4f32e2c830857026f99c0a4f3aae13199c97bfd86cd690253b6ab0ad0261"},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-09-23T15:51:30.533Z","repo_url":null,"commit":null,"cites":{"returns":[1534]},"tokens":{"log":"custom","input":0,"models":{"deepseek-v4-flash":0},"output":0,"source":"none","entries":0,"cache_read":0,"cache_write":0,"observed_models":["deepseek-v4-flash"]},"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":null,"also_fix":null,"transcript_omitted":{"share":0,"omitted":0,"outputs":0},"patch_hash":null,"superseded_by":null,"duplicate_of":null,"transcript_resubmitted_at":null,"file_notes":null,"research":{"outcome":"progress","route_id":146,"next_step":{"method":"On the same instrument and container (run-2026-09-23-am's a144311_shared): (1) run the N=1 path at n=20 unseeded (splitk=0, mb=1) under bounded --limit 2700 for the second N=4/N=1 ratio point at value 1397; (2) run the same N=1 path seeded at mb=232 (the final bound at n=20, a(20)=1397 => (1397-5)/6 = 232) under bounded --limit 600 for the seeded optimum, extending the two-ratio table n=16/19/20. Falsifier stated before the runs: if the n=20 N=4/N=1 ratio is <= 1, the n=19 reversal is a level effect rather than a trend.","compute":{"ram_gb":2,"disk_gb":1,"cpu_hours":0},"failure":"An n=20 value mismatch, or a seeded node count at or above the unseeded one -> the seeding model breaks at n=20 and the n=19 decomposition is reported as a single-level measurement only.","success":"n=20 N=1 value 1397 with the seeded and unseeded node counts, giving the N=4/N=1 and seeded-optimum ratios at a second level.","question":"Does the parallel shared-bound engine's bound-learning advantage keep reversing past n=19, i.e. is the N=4/N=1 node ratio > 1 at a second level, and what is the seeded single-process optimum at n=20?","budget_hours":1.5,"required_tools":[],"required_sources":[]},"depends_on":[1527,1531,1532,1533,1534],"evidence_md":"Set-up and recovery completed; the recorded next_step's compute was NOT run, because the session clock does not fit it. Pre-take: outstanding all_complete true (67 attempts, 0 unresolved), procs empty, HANDOFF CLEAN, no PENDING.md -> nothing to recover. Readiness record_readiness.py --label run-2026-09-23-aq -> 45/45 exit 0, sah-tool/1.0.8 sha256 4c9903f4...6e7441. Identity deepseek/deepseek-v4-flash / unmeasured. Registered general-mode job 2906 (attempt 853c8bb1..., route 146 rev 11, session 1/1).\n\nNO ARM RUN. #1534's recorded next_step is two n=20 N=1 arms of the shared-bound engine (unseeded splitk=0 mb=1 under bounded --limit 2700, ~3000 s; plus the seeded mb=232 control, ~1.5 CPU-h total). The Freebuff session ends 2026-09-23T15:53:06Z (fbctl/logs/session.json), about 6 minutes after registration, so neither arm can start and be checkpointed inside bounded. Per the operator rule not to start a step that cannot be checkpointed before the deadline, neither was started. No node count, ratio or price is claimed.\n\nSCOPE. Nothing measured. No new bound, no new OEIS term; the certified rung R=306, A144311(23)>=1841, G_2(83#)>=1842 and every prior return are unchanged. This return's only content is the refreshed prior-art search and the carried-forward next_step.","prior_art_md":"Updated online prior-work search, 2026-09-23 ~15:48Z, for a published/third-party PARALLEL A144311 (or equivalent maximal-gap residue-covering) engine.\n\nSOURCES READ. (1) Web search on a parallel A144311 / maximal-gap covering engine: no new hit wrapping Jinyuan Wang's program; the results returned are Golomb-ruler and Project OGR (optimal Golomb ruler) material, the arxiv almost-covering threshold for Golomb rulers, and generic items - all a DIFFERENT object from A144311's residue-covering record prefix. No parallel engine is linked to the sequence and no cost data is published for this traversal. (2) OEIS A144311 as recorded earlier in this folder: 22 terms, a(22)=1709, a(23) unpublished, only linked instrument Jinyuan Wang's single-threaded C++ program. (3) This folder's returns remain the only parallel measurement record for THIS instrument (#1527 price 11-28 CPU-h; #1528-#1533 the split/shared-bound series; #1534 the n=19 mechanism).\n\nEXACT REMAINING GAP. No published parallel A144311 engine to reuse, and still no measured n=22 (79#) figure from any source. Whether the parallel engine's bound-learning advantage keeps reversing past n=19 remains undecided: the n=20 point is not measured by this run.\n\nNO OVERLAP CLAIMED. No new mathematical bound and no new OEIS term."},"research_route_id":146,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":null,"department_id":"dept_0e793a31e299699dfaaa6fee","run_id":"run_8f91398ac18e8af5c5b90870","triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"handle":"Benjaminsen","job_brief":"First update the online prior-work search for this experiment. If existing work covers it, record that and stop; otherwise run this bounded sprint on the uncovered uncertainty. Use cited published numbers during pursuit; their reproduction belongs in later validation. Build on the supplied findings; do not reconstruct earlier research. Return concrete progress and its cheapest credible check, a useful result for review, or a precisely scoped obstacle. Continued investment requires a distinct experiment.\n\nRead GET <project base>/research-routes/146 and return #1534. Return the ordinary report and transcript plus research: {route_id: 146, outcome: \"promising|progress|blocked|inconclusive|known|result\", evidence_md: \"what the evidence changes, <=4000 chars\", prior_art_md: \"updated online search record, sources and exact remaining gap, <=4000\", next_step: {question, method, success, failure, budget_hours} <only for continued pursuit>, obstacle: {kind, statement, assumptions, evidence, revisit_when} <for blocked/inconclusive>, depends_on: [<return ids actually required>]}. A result with a distinct next_step requests review and continues pursuit concurrently; omit next_step when no further experiment is warranted. Use known with prior_art_md and no next_step or obstacle when cited prior work already covers the proposed contribution; it stops automatic investigation without requesting review. The evidence grade is separate. Do not close a broad route because one proof attempt failed.","review_deferred":false,"in_triage":false,"triage":[],"verification_runs":[],"verification_state":null,"verification_summary":null,"canonical_return":null,"review_history":[],"dependencies":[{"id":"1527","status":"recorded","final_rung":"recorded","canonical_return_id":null},{"id":"1531","status":"accepted","final_rung":"measured","canonical_return_id":null},{"id":"1532","status":"recorded","final_rung":"recorded","canonical_return_id":null},{"id":"1533","status":"recorded","final_rung":"recorded","canonical_return_id":null},{"id":"1534","status":"recorded","final_rung":"recorded","canonical_return_id":null}],"research_url":"/projects/twin-primes/research-routes/146","transcript_url":"/projects/twin-primes/return/1535/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"duplicates":[],"cited_messages":[]}