Add a Lean Std list model and simp_to_model registration for Const.mergeWith, replace the Iris bespoke fold proof with a direct simp_to_model proof, and validate both using a freshly built native Lean Stage1.

upstream model bridge plus native tactic replay

Model Const.mergeWith as a distinct-key-preserving list fold, register the transformation with simp_to_model, and execute the imported metaprogram using a newly built Lean runtime.

Hypothesis: The paired Lean/Iris patch compiles with a native Lean v4.32.0 Stage1 and makes simp_to_model discharge the standalone mergeWith fixture and unchanged Iris public theorem.

Test: Complete lab job lab-iris-lean-127-simp-to-model-3505dff6ff4a, then require the standalone fixture, focused HeapInstances module, full Iris build, and downstream consumer checker to pass with that same Stage1 executable.

Static source checks and compiler probes establish useful infrastructure progress, but the verification contract explicitly requires focused and full Iris builds using the new native runtime. Those gates remain unobserved, so candidate promotion would be premature.

• The staged Iris source preserves both public getElem?_mergeWith' theorem headers and replaces the bespoke TreeMap proof with simp_to_model [Const.mergeWith, Const.get?].
• The packaged paired diffs still have SHA-256 values c94fc8d34dfcff1069186a210c1975b80a38368da0d8f40de6ece0564340fdd6 and 1ffc3525dee6f7f1d65b93e8173a9789149ef9155832e199098956cf1620a64b.
• Using pinned Clang for C and host g++ for C++ builds the Stage1 initialize target.
• Adding the packaged include/clang directory makes the exact previously failing generated Init/Prelude.c compilation succeed.
• No native simp_to_model or Iris build success is claimed.

• .proof-experiments/20260723-124416-8bf5f1: static paired-patch audit returned zero.
• .proof-experiments/20260723-123622-7a63cd: mixed-compiler Stage1 initialize target returned zero.
• .proof-experiments/20260723-130040-21f77b: exact generated Init/Prelude.c compilation returned zero.
• records/labs/lab-iris-lean-127-simp-to-model-14fff4fa28aa-stopped-with-reason-segment-01.json: missing stddef.h failure before the header fix.
• records/labs/lab-iris-lean-127-simp-to-model-3505dff6ff4a-submitted-segment-01.json: active continuation specification and input hash.

• .proof-experiments/20260723-123622-7a63cd: mixed Clang/g++ configuration built the Stage1 initialize target.
• .proof-experiments/20260723-124416-8bf5f1: exact current source passed the structural paired-patch checker.
• .proof-experiments/20260723-130040-21f77b: the exact generated-C failure was repaired by the bundled builtin-header path.
• lab-runs/lab-iris-lean-127-simp-to-model-3505dff6ff4a/segment-000001/20260723-130709-c80c95: active Stage1 continuation; no semantic result yet.

scripts/check_issue_127.py plus checks/Issue127.lean form a separate deterministic consumer/signature checker; it is prepared but has not yet run with the new Stage1.

not_requested

No structured gate reasons were recorded in this legacy attempt; see the adjudication ledger.

Original model outcome

no_progress

Public classification

no_progress

None recorded.

• The staged source preserves both public theorem headers and removes the bespoke Iris fold helpers without sorry, axiom, or admit.
  .proof-experiments/20260723-124416-8bf5f1 returned zero and recorded the four source hashes. · The exact packaged Lean and Iris diffs · computed
• Pinned Clang for C plus /usr/bin/g++ for C++ builds the real Stage1 initialize target.
  .proof-experiments/20260723-123622-7a63cd · Lean v4.32.0 source at 8c9756b on this recorded Linux environment · computed
• The bundled include/clang path repairs the exact Init/Prelude.c stddef.h failure.
  .proof-experiments/20260723-130040-21f77b · The recorded generated C input and pinned Clang 22.1.4 · computed

• Validate changed imported simp_to_model metaprogram code using patched OLean overlays with the stock native executable.
  Lean v4.32.0 stock executable with the recorded overlay · The mergeWith model goal remains unchanged because the running imported metaprogram is still the stock native implementation. · .proof-experiments/20260723-063823-7333d5 · A mechanism that demonstrably loads the changed tactic implementation into the executing runtime.
• Use the packaged clang executable directly as both C and C++ compiler.
  The recorded Lean v4.32.0 toolchain on this host · Runtime C++ compilation cannot find cstdlib. · lab-iris-lean-127-simp-to-model-d488726e0f47 · A valid clang++ driver or explicit complete C++ standard-library configuration.
• Compile generated Lean C with the packaged Clang's default header search.
  The recorded packaged Clang 22.1.4 · Its expected resource directory is absent and stddef.h is not found. · lab-iris-lean-127-simp-to-model-14fff4fa28aa · Provide the bundled include/clang path or an equivalent verified resource directory.

• Complete and review the active native Stage1 continuation.
  It is the first run whose formerly failing C++ and generated-C targets both compile, and it directly reaches the required semantic fixture. · Inspect records/labs for lab-iris-lean-127-simp-to-model-3505dff6ff4a and continue the same cache if necessary. · high · open
• Trace simp_to_model's transformed expression head if the standalone fixture retains mergeWith.
  A single expression trace distinguishes an incorrect constant-name registration from an insufficient model bridge. · Instrument a bounded local copy of simp_to_model expression traversal in experiments/SimpToModelMergeWith.lean. · normal · open

Objective: Obtain a hash-bound native completion receipt for the paired patches.

First action: Inspect records/labs/lab-iris-lean-127-simp-to-model-3505dff6ff4a-*-segment-01.json and the associated content-addressed lab-runs output.

Stop condition: Promote only if the fixture, focused module, full Iris build, and independent consumer checker all pass; redirect if the fixture retains mergeWith.

• Inspect the immutable completion or stopped record for lab-iris-lean-127-simp-to-model-3505dff6ff4a.
• If the segment times out with continuing target growth and no error, submit a continuation using the same physical Stage0/Stage1 cache.
• If Stage1 completes, require the standalone fixture before spending time on the Iris build.
• Promote only after check_upstream_bridge reports native_compile_checked=true, the full Iris build exits zero, and check_issue_127 reports passed=true.

• https://github.com/leanprover-community/iris-lean/issues/127 ↗
• https://github.com/leanprover/lean4/tree/v4.32.0 ↗

GPT-5.6 Sol served as principal investigator. A pre-existing GPT-5.6 Terra source-discriminator memo supplied advisory leads; Sol independently checked every relied-on claim. Tools used: GitHub/web source inspection, Git, Python 3.12 deterministic checkers, CMake 3.28, Lean 4.32.0, Lake, Clang 22.1.4, GNU g++ 13.3.0, shell utilities, and the checkpointed Proof Factory lab. No delegate agreement was treated as validation.; orchestration: gpt-5.6-sol principal with gpt-5.6-terra delegates.

Duration

2972.7s

Review state

evidence receipt failure; not durable progress

Attempt ID

iris-lean-127-simp-to-model-20260723-132018-f1fbe5

No human review recorded.