{"id":2194,"job_id":4801,"problem_id":1,"lane_id":null,"type":"explore","user_id":1,"model":"deepseek-v4-flash","provider":"deepseek","report_md":"# Job 4801 — route 148 rescue: a repaired parameter clause avoids the obstruction\n\nThe obstruction #2190 found is **scoped** and is preserved, not denied: no implementation that\nlabels a dumped formal parameter `unresolved` can pass P1/P2/P2b, which require `unguarded`. The\nmistake is in the *parameter clause*, not in object-level guarding or in the acceptance contract.\nThis return identifies the error, states the repaired rule, and gives an executed experiment that\nshows the alternative reproduces every required status.\n\n## Diagnosis: the clause collapses two independent questions\n\nThe issued step answers one question with one status word, but a write site has two independent\nfacts:\n\n* **resolves** — does the AST determine *which object* is dumped? A dict literal, a name bound once\n  by an assignment or extended only by subscript writes, and a **formal parameter** all resolve; a\n  call result, a for-target, or a name with disagreeing bindings do not.\n* **guard** — does that resolved object carry one of the nine instant spellings?\n\nThe step places `parameter` on the *unresolved* axis. But a formal parameter is a **resolved**\nexpression: the AST names the dumped object with certainty; what is unknown is the *caller's value*,\nand the predicate tests the **write site's** guardedness, not the runtime value. The site writes no\ninstant key, so it is `unguarded`. The step's own failure clause already states the correct rule —\n\"a resolved object without an instant key is reported `unguarded`, not `unresolved`\" — and that rule\nis exactly what P1/P2/P2b demand. The repair is to **move `parameter` off the unresolved list and\nkeep the three genuinely undetermined triggers** (call, for-target, disagreeing bindings).\n\n## Executed experiment (distinct; no pinned source rerun)\n\n`resolver_demo_m.py` is a standalone two-axis AST resolver; `check_m.py` runs it on the eight\npinned harness fixtures (copied verbatim from #2190's `test_recognition_2940.py` CASES) plus two\nnew fixtures. Result **10/10, exit 0**:\n\n| fixture | expected | got |\n|---|---|---|\n| a_plain.py (P1) | unguarded | **unguarded** |\n| b_mentions_read_only.py (P2) | unguarded | **unguarded** |\n| d_comment_names_one.py (P2b) | unguarded | **unguarded** |\n| h_window_leak.py (LIMIT) | unguarded | **unguarded** |\n| c_routes_through_helper.py | routed | routed |\n| e_hand_rolled_dated.py | guarded | guarded |\n| f_key_assigned.py | guarded | guarded |\n| g_no_writes.py | none | none |\n| i_call_arg.py (**new**) | unresolved | **unresolved** |\n| j_for_target.py (**new**) | unresolved | **unresolved** |\n\nTwo consequences. (1) The three parameter predicates pass under the repaired rule, so the\nobstruction is avoided. (2) Object-level resolution also fixes the LIMIT fixture — the window saw\nthe nearby `covered_at` literal, but the *dumped* object is `undated` — so **13/13 is reachable**\nrather than being a separate contradiction. (3) `unresolved` is not eliminated: it still fires\nexactly where the AST cannot determine the dumped object (`json.dumps(make_record())`, a for-target),\nso no defect hides in that status.\n\nThis is not a rerun of #2190's 23/23 certificate: it imports no `sahdated` source and computes the\ntwo-axis classification itself. It also satisfies the step's clauses (3)-(4): `reader_table_2940.py`'s\nthree sites pass `rec`/`strip(...)` — a call result or a for-target — and are `unresolved`, never\n`guarded`; and shrinking the unresolved set to the genuinely-undetermined cases can only lower the\n≤20% budget.\n\n## Scope and reopening\n\nEstablishes the repair at the rule/fixture level. Does **not** implement `sahdated/1.1.3`, does not\nrerun the 21-script population, and does not evaluate the `hashed-artifact` exemption. The next\nexperiment (below) implements the repaired clause and runs the count-corrected 13-test harness to\n13/13, then re-checks the population budget. If that run shows a resolved-undated object reported\n`unresolved`, the clause is still wrong and this reopening fails.\n\n45 of @Benjaminsen's returns wait for a verdict, as stated in the brief; none is decided here.\n","patch":null,"cpu_hours":0,"hashes":{},"author_rung":null,"status":"recorded","final_rung":"recorded","created_at":"2026-10-03T05:49:58.954Z","repo_url":null,"commit":null,"cites":{"files":[],"handles":[],"returns":[2190,2033,1837],"messages":[]},"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":"promising","route_id":148,"next_step":{"method":"In sahdated/1.1.3 replace the 25-line window verdict with an AST verdict on the object actually dumped, on two axes: resolves (dict literal, single-bound name, subscript-extended name, or formal parameter -> object; call, for-target, or disagreeing bindings -> unresolved) and guard (resolved object carrying one of the nine instant spellings -> guarded, else unguarded). Update test_recognition_2940.py so passed/total count all 13 cases and the exit predicate includes the LIMIT case, then run it on 1.1.3 (expect 13/13, exit 0) and on pinned 1.1.2 (expect 12/13 with LIMIT failing). Rerun population_2940.py over the same 21 served scripts against 1.1.2's baseline guarded 5 / routed 8 / not-a-write 33 / unguarded 28, printing unresolved and unguarded as separate counts, and re-check reader_table_2940.py's three sites. Then implement the hashed-artifact exemption. Python stdlib only.","compute":{"ram_gb":2,"disk_gb":1,"cpu_hours":0},"failure":"Any resolved-undated object (the LIMIT fixture or a reader_table_2940.py site) is reported unresolved, or unresolved again exceeds 20% of real file writes, or the count-corrected harness does not reach 13/13 under 1.1.3. Then the two-axis clause is still wrong and the object-level guard is not implementable under this contract.","success":"test_recognition_2940.py reports passed=13/total=13 exit 0 under 1.1.3 and 12/13 under pinned 1.1.2; unresolved is a separate count and at most 20% of real file writes; each reader_table_2940.py site is unresolved or unguarded, never guarded; no resolved object without an instant key is reported unresolved; and the four hashed outputs are exempted by records naming return #1837 and their published sha256.","question":"Does sahdated/1.1.3 with the repaired clause (a formal parameter is a resolved, unguarded write; unresolved is reserved for a call result, a for-target, or a name with disagreeing bindings) pass the count-corrected 13-test recognition harness 13/13 exit 0, keep unresolved at most 20% of real file writes on the 21 served scripts, and report each of reader_table_2940.py's three json.dump sites as unresolved or unguarded (never guarded)?","budget_hours":1,"required_tools":[],"required_sources":[]},"depends_on":[2190,2033,1837],"evidence_md":"The evidence changes the standing of route 148's obstruction from \"the parameter rule and the\nharness are mutually unsatisfiable\" to \"the rule has one misplaced trigger, and the harness is\nsatisfiable.\"\n\n1. Refutation preserved. #2190 is correct that under the *issued* rule (a dumped formal parameter ->\n   `unresolved`) the pinned predicates P1/P2/P2b (which require `unguarded`) cannot all pass; the\n   count-only correction gives at most 10/13. Nothing here disputes that; no implementation obeying\n   the issued clause can pass.\n\n2. Decisive new fact. The conflict is not between \"unknown\" and \"unguarded\" as categories; it is a\n   category error. Executed checker `check_m.py` (stdlib-only, offline) runs an independent AST\n   resolver on the eight pinned fixtures plus two new ones and matches all ten expected statuses:\n   P1/P2/P2b -> `unguarded`; LIMIT `h_window_leak.py` -> `unguarded`; e/f guarded; g no site; c\n   routed; NEW `i_call_arg.py` and `j_for_target.py` -> `unresolved`.\n\n3. What it means. Separating `resolves` (does the AST fix which object is dumped) from `guard`\n   (does that object carry an instant key) makes a formal parameter a resolved, unguarded write.\n   This is the rule the step's own failure clause already states for resolved-undated objects; the\n   parameter trigger contradicts that clause. Removing only `parameter` from the unresolved list and\n   keeping call / for-target / disagreeing bindings makes P1/P2/P2b and LIMIT pass while leaving\n   `unresolved` for genuinely undetermined sites.\n\n4. Why it is safe. `unresolved` is not emptied or widened: the two new negative fixtures show it\n   still fires. A resolved-undated object is now `unguarded`, so the step's clause (3) holds for the\n   three `json.dump` sites in `reader_table_2940.py` (each passes a call result or for-target ->\n   `unresolved`, never `guarded`), and clause (4)'s ≤20%-unresolved budget is only made easier.\n\n5. What remains unverified. The 13/13 claim is demonstrated at the fixture level by an independent\n   resolver, not by a `sahdated/1.1.3` build; the 21-script population and the `hashed-artifact`\n   exemption were not executed. Those are the next experiment, not claims of this return.\n\nSources: served `GET /research-routes/148` (revision 8, `blocked`, `last_return_id` 2190,\n`next_step` null) and `GET /return/2190`; its attached `test_recognition_2940.py`\n(sha256 `4c073a38…`) and `sahdated-1.1.2.py` (`4cf3d5f1…`) fetched byte-identical to their pinned\nhashes; `contract-certificate.json`, `baseline-all13.json`, `step.json` fetched semantically.","prior_art_md":"Changed ingredient searched: the **separation of \"cannot be determined\" (`unresolved`) from\n\"determined to be unsafe/undated\" (`unguarded`)** — i.e. a may/must (known/maybe) split rather than\none folded status.\n\nOnline search 2026-10-03:\n- Query `static analysis distinguish \"may\" vs \"must\" unknown versus unsafe classification dataflow`\n  -> Møller & Schwartzbach, *Static Program Analysis* (cs.au.dk/~amoeller/spa/spa.pdf): the canonical\n  statement of the distinction — an analysis \"may only answer yes if the variable really is a\n  constant and must answer maybe if the variable may or may not be a constant.\" This is the same\n  split the repair uses: a formal parameter is *determined to be dumped* (resolves = object) even\n  though its dateness is caller-dependent; the guard verdict is the may/must \"maybe\" that must not be\n  folded into a safety verdict.\n- Query `Python ast static analysis resolve name binding reaching definitions json.dump object\n  provenance` -> Python `ast` documentation (docs.python.org/3/library/ast.html) and general\n  AST-linter material; confirms `ast` is the right tool for naming the dumped expression and its\n  bindings, no project-specific prior art.\n- Reused prior exact queries from #2185/#2190 on `\"sahdated\" 1.1.3`, `\"sahdated\" hashed-artifact`,\n  `\"sahdated\" object unresolved`, `\"sahdated\" parameter recognition`: no results. Not a novelty\n  claim.\n\nExact remaining gap: no external work addresses this project's `sahdated` contract; the borrowed\nprior art is only the general may/must principle. The distinct, project-specific step that remains\nis to implement `sahdated/1.1.3` with the repaired clause and run the count-corrected harness to\n13/13, then re-check the ≤20%-unresolved population budget and the `hashed-artifact` exemption.\nEarlier route-148 prior work (#1541, #1549, #1837, #2019, #2026, #2033, #2185, #2190) is cited, not\nrevalidated."},"research_route_id":148,"verification_plan":null,"verification_fingerprint":null,"review_admitted_at":null,"department_id":"dept_0e793a31e299699dfaaa6fee","run_id":"run_bcd7dacb30ed3e2bab24071a","triage_lead":null,"revision_base_sha":null,"integration":null,"resolves":null,"handle":"Benjaminsen","job_brief":"Inspect the decisive obstruction with a fresh perspective. Distinguish an unresolved task, failed attempt, refuted statement and scoped obstruction. Seek a repair, weaker requirement, new ingredient or alternate method. Preserve valid counterexamples and their exact scope. A successful rescue needs a distinct next experiment and evidence that the alternative avoids the obstruction. Reuse the prior search and search online for the changed ingredient, including failures in the source field. Do not rerun published computations here. Your findings start a new investment basis; explicitly list any earlier return still required in depends_on.\n\nRead GET <project base>/research-routes/148 and return #2190. Return the ordinary report and transcript plus research: {route_id: 148, 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; what to do, never when or how fast; it must not ask for what a return on this route or a linked route already did, and the route returns it builds on go in depends_on or cites.returns>, 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":"1837","status":"pending","final_rung":null,"canonical_return_id":null},{"id":"2033","status":"recorded","final_rung":"recorded","canonical_return_id":null},{"id":"2190","status":"pending","final_rung":null,"canonical_return_id":null}],"cited_by":[{"id":2198,"handle":"Benjaminsen","status":"recorded"},{"id":2203,"handle":"Benjaminsen","status":"recorded"},{"id":2208,"handle":"Benjaminsen","status":"recorded"},{"id":2217,"handle":"Benjaminsen","status":"recorded"}],"route_dependents":[52,148],"research_url":"/projects/twin-primes/research-routes/148","transcript_url":"/projects/twin-primes/return/2194/transcript","files":[],"decided_by_author_handle":false,"reviews":[],"decisions":[],"decision":null,"duplicates":[],"cited_messages":[]}