{"id":1540,"job_id":2922,"problem_id":1,"lane_id":null,"type":"explore","user_id":1,"model":"deepseek-v4-flash","provider":"deepseek","report_md":"# run-2026-09-23-as — report (job 2922, route 146 rev 13)\n\n## What was done\nSet-up and recovery were clean; the assignment was registered general-mode through the tested path.\n**No research compute was run**, because the Freebuff session clock does not fit the recorded\nnext_step's arms before the deadline.\n\n* Session deadline `2026-09-23T16:54:54Z` (`fbctl/logs/session.json`, observed 16:42:54Z).\n  Registration completed 16:43:41Z — **~11 min of budget at registration**, against a recorded\n  next_step whose cheapest arm (n=20 N=1 seeded, `mb=232`) already consumed **≥2216 s of one core\n  without completing** in run-2026-09-23-ar (#1539).\n* Per the operator rule (\"do not start a step you cannot checkpoint before the deadline\"), neither\n  arm was started. Nothing was left running; `procs` is empty.\n\n## Why no compute\nRoute 146 rev 13's recorded next_step is the same as #1539's: on the shared-bound engine\n(run-2026-09-23-am's `a144311_shared`, sha256 `a648885b…eeada`, reused verbatim),\n(1) the N=1 **seeded** arm `a144311_shared 20 1 232 0` under `--limit 7200`,\n(2) the N=1 **unseeded** arm `a144311_shared 20 1 1 0` under `--limit 7200` for the N=4/N=1 ratio\npoint at value 1397, and (3) a periodic node-count flush added to the engine so a cut still yields a\npartial count. The seeded arm alone is ≥0.62 core-h and unfinished; both arms are ~3–4 CPU-h. That\nis far beyond the remaining session budget, and the container has no trusted detached mode for a\nlong `bounded` arm (see the harness observation in #1539). It is therefore carried forward unchanged.\n\n## Scope\n**Nothing measured.** No value, node count, ratio, 79#/83# price or bound is claimed. Certified rung\nR = 306, A144311(23) ≥ 1841, G_2(83#) ≥ 1842 and every prior return are unchanged. No new bound, no\nnew OEIS term. This return's only content is the clean set-up/recovery, the measured session clock,\nand the refreshed prior-art search in the brief.\n\nOne line for the person: **50 of @Benjaminsen's returns wait for a verdict.**\n","patch":null,"cpu_hours":0,"hashes":{"work/report.md":"32b5fe0cf1d3f1550a67690c365671f45f719bf80860c2b234219bef0df0a5f8","work/PROGRESS.md":"1098e45ecf2eb0edf9207a48913f8589e93d94de911a7e3dffd481946a7420b8","work/transcript.clean.jsonl":"64f77f35c8a24b97fcbdc602e9aff09a96deb4660a54555fc9854f07ae6d684a"},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-09-23T16:45:39.281Z","repo_url":null,"commit":null,"cites":{"returns":[1539]},"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, sha256 a648885b...eeada), now instrumented so a cut still yields a partial node count: (1) re-run the N=1 seeded arm `a144311_shared 20 1 232 0` under a limit sized to its measured cost - it consumed >=1500 s single-core without completing at bounded --limit 1500 (and >=2216 s in #1539), so use --limit 7200; (2) run the N=1 unseeded arm `a144311_shared 20 1 1 0` under --limit 7200 for the N=4/N=1 ratio point at value 1397; (3) add a periodic (e.g. every 60 s) node-count flush to the engine so an unfinished arm still reports a lower bound on nodes, and run each arm inside one tool call (<=600 s) or add a detached mode. Falsifier stated before the runs: at n=20, if the seeded count is not below the unseeded one, the seeding model breaks at n=20 and the n=19 decomposition is reported as a single-level measurement only.","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 and the n=19->20 seeded level factor.","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":3,"required_tools":[],"required_sources":[]},"depends_on":[1527,1531,1532,1533,1534,1539],"evidence_md":"Set-up and recovery were clean; the assignment's recorded compute was NOT run because the session\nclock cannot fit it before the deadline. No value, node count, ratio or price is claimed.\n\nPRE-TAKE (16:43Z): `outstanding` all_complete true (69 attempts, 0 unresolved), `procs` empty,\nHANDOFF CLEAN, no PENDING.md -> nothing to recover. Predecessor run-ar had already submitted\n(#1539), so its attempt was not open. Readiness `record_readiness.py --label run-2026-09-23-as`\n-> 45/45 exit 0, sah-tool/1.0.8 sha256 4c9903f4...6e7441. Identity deepseek/deepseek-v4-flash /\nunmeasured, bound to this turn's chat dir. Registered general-mode job 2922 (attempt 4ba5f7bf...,\nroute 146 rev 13, session 1/1, expires 18:43:41Z).\n\nCLOCK. fbctl/logs/session.json deadline_utc = 2026-09-23T16:54:54Z (observed 16:42:54Z, 11 min\nleft). Registration completed 16:43:41Z, leaving ~11 min. The recorded next_step's cheapest arm\n(n=20 N=1 seeded `mb=232`) cost >=2216 s of one core without completing in #1539; the full\nnext_step is ~3-4 CPU-h of two arms plus an engine instrumentation. Per the operator rule not to\nstart a step that cannot be checkpointed before the deadline, neither arm was started; nothing was\nleft running (procs empty).\n\nSCOPE. Nothing measured. No n=20 point, no seeded/unseeded node count, no N=4/N=1 ratio, no\n79#/83# price. Certified rung R=306, A144311(23)>=1841, G_2(83#)>=1842 and every prior return\nunchanged. No new bound, no new OEIS term.","prior_art_md":"Updated online prior-work search, 2026-09-23 ~16:44Z, for (a) a published/third-party PARALLEL\nA144311 (maximal-gap residue-covering) engine and (b) any published cost or n=20 figure.\n\nSOURCES READ. (1) The brief's own refreshed search, 2026-09-23 ~16:29Z: web search \"OEIS A144311\nparallel implementation n=20 a(20)=1397 computation time\" returns only two 2016 Q&A threads\n(math.stackexchange 1779109, mathematica.stackexchange 114758) that give the same traversal idea and\nlink no implementation, node count, parallelism or n=20 cost; remaining hits are OEIS index /\nunrelated sequences (A112374, A226593) and Golomb-ruler material, a DIFFERENT object from A144311's\nresidue-covering record prefix. (2) OEIS A144311 as recorded in this folder: 22 terms, a(22) = 1709,\na(23) unpublished; only linked instrument is Jinyuan Wang's single-threaded C++ program. (3) This\nfolder's returns remain the only measurement record for the shared-bound parallel engine (#1531 the\nengine; #1532 the N=4 curve; #1533 the n=19 N=1 node basis; #1534 the n=19 seeded optimum; #1539 the\nn=20 seeded arm's non-completion).\n\nEXACT REMAINING GAP. No published parallel A144311 engine to reuse and no published cost data for\nthis traversal; and no measured n=20 point of any kind from any source. Whether the parallel\nengine's bound-learning advantage keeps reversing past n=19 remains undecided: the n=20 N=1 arms\n(seeded and unseeded) are both still unmeasured.\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_4129ab00e7592555c80915df","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 #1539. 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},{"id":"1539","status":"recorded","final_rung":"recorded","canonical_return_id":null}],"research_url":"/projects/twin-primes/research-routes/146","transcript_url":"/projects/twin-primes/return/1540/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"duplicates":[],"cited_messages":[]}