Retarget public correctness toward native EVMYulLean#1822
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This was referenced May 6, 2026
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Lays out an 8-step constructor pyramid for NativeGeneratedSelectedUserBodyExecOnlyBridgeAtFuelRevived in the remaining-work tracker. Each step is intended to land as a separately green-buildable commit so that partial progress is durable even if the deep generic BridgedStraightStmts step is not reached in one pass. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements G1 plan step 2: a generic constructor for NativeGeneratedSelectedUserBodyExecOnlyBridgeAtFuelRevived covering selected user bodies of the shape [.block [.leave]]. The native lowering produces [.Block [.Leave]] which the outer dispatcher block wraps as .Block [.Block [.Leave]] — closed by the new exec_block_block_leave_ok_add_ten helper. The source side execIRFunction reduces the inner .block to its body and a single .leave to .continue, observationally matching the native post-reviveJump state. This widens the success-side revived bridge surface by one shape without modifying any existing constructor. lake build Compiler.Proofs.EndToEnd remains green. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements G1 plan step 3: a generic constructor for NativeGeneratedSelectedUserBodyExecOnlyBridgeAtFuelRevived covering selected user bodies of the shape [.block []]. The native lowering produces [.Block []] which the outer dispatcher block wraps as .Block [.Block []] — closed by the new exec_block_block_nil_ok_add_ten helper. The source side execIRFunction reduces the inner .block to its empty body returning .continue stateWithParams, observationally matching the native post state (no setLeave needed, so reviveJump is identity). Mirrors .of_empty_body shape with one extra nested-block layer. No existing constructor is modified. lake build Compiler.Proofs.EndToEnd remains green. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implements G1 plan step 4: a generic constructor for NativeGeneratedSelectedUserBodyExecOnlyBridgeAtFuelRevived covering selected user bodies of the shape [.comment text]. The native lowering of .comment is .Block [] (via lowerStmtGroupNativeWithSwitchIds_comment), so the dispatcher-wrapped body becomes .Block [.Block []] — the same native shape as .of_block_empty, closed by the existing exec_block_block_nil_ok_add_ten. The source side execIRStmt of .comment is a no-op (.continue state), so the observable projection matches the empty-body path. The text is existentially extracted from the hypothesis so the constructor works for any concrete label. Mirrors .of_block_empty native shape; no existing constructor is modified. lake build Compiler.Proofs.EndToEnd remains green. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
A direct Revived-level .of_comment_cons recursive adapter is structurally awkward: the Revived predicate's nativeGeneratedSelectorHitUserBodyFuel depends on the full contract's fn.body size, so recursing into a stripped tail body would require either a predicate refactor parameterizing over the explicit body shape or duplicating the entire predicate logic inline. Instead, the runtime dispatcher's `.comment "label" :: <real body>` shape is handled at the NativeGeneratedSelectorHitSuccessBridge wiring (step 7): each leaf Revived constructor pairs with a one-shot comment-prefix adapter that strips the no-op label head, leaving <real body> to match an existing leaf constructor. Documentation-only change. lake build remains green. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Documents the shipped Revived constructor family (.of_block_empty, .of_block_leave, .of_singleton_comment, .of_leave_body, .of_empty_body) and the technical sketches for the three deeper remaining steps: - Step 5 (.of_nativePreservableStraightStmts_leave): cites the NativeBlockPreservesWord_lowerStmtsNativeWithSwitchIds_of_nativePreservableStraightStmts glue and proposes the execIRStmts_continue_of_nativePreservableStraightStmts_pre_leave companion lemma signature. - Step 6 (.of_bridgedStraightStmts_falling_through): notes the function-end fall-through convention alignment between execIRFunction's post-execIRStmts extraction and the dispatcher outer block exit. - Step 7 (success-bridge wiring + comment-prefix collapse). - Step 8 (hUserBodyHalt premise drop). Also regenerates PrintAxioms.lean to track the three new private theorems added by .of_block_empty (commit fa980235), .of_singleton_comment (commit f69044a1), and their source-side helpers. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Adds a top-level "PR 1822 — Achievement Summary" block to the native EVMYulLean transition doc that calls out exactly what landed on `native-evmyullean-public-correctness` (public-surface retarget, native EndToEnd surface, leaf Revived constructors S1–S4 covering the full observational-no-op body family, supporting harness lemmas, zero-sorry / zero-axiom invariants) versus what is deferred to a follow-up PR (G1 steps S5–S8: the `<straight-stmts>; leave` and `<straight-stmts>` falling-through constructors, success-bridge wiring with per-leaf `_with_label_prefix` variants, and the final `hUserBodyHalt` premise drop). Per-step status lines now read "shipped in PR 1822" or "deferred to follow-up PR" so the document is self-contained as a hand-off without consulting commit history. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The test asserted that removing the canonical public-theorem mention from the native transition doc makes `check_doc` report an error. It used `replace(..., ..., 1)` (count=1), which only rewrote the first occurrence. Once the doc grew a second backticked mention (introduced by the G1 plan in `5535376f`, and again by the PR-1822 achievement summary), the post-replace text still contained the canonical name elsewhere, so `check_doc` found nothing missing and the assertion fired with an empty error list. Switch the test to a count-less `replace`, so every occurrence is rewritten before invoking `check_doc`. The test now matches its intent — "if no mention of the public theorem survives, the check must complain" — and stays robust against future natural mentions in the same doc. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Captures concrete code-level facts gathered while reviewing the post-#1822 tree for the S5-S8 follow-up: - Verified line numbers for every shipped Revived leaf constructor and the one shipped chain (`of_empty_body`). - Corrected the original plan: the `of_leave_body` success-bridge chain is NOT pre-existing - it must be authored alongside E3, E4, E5. - Documented the per-body-shape preservation status: `empty_block` and `comment` preservation lemmas already ship; `Leave` and `NativePreservableStraightStmts` preservation are net-new work. - Pointed F1 readers at the redundancy with E5: F1 and E5 describe the same body shape `[.comment text]`, so F1 can be dropped once E5 lands. - Listed concrete file insertion points for Layers A, B, D, and the call-site sweep required for Layer G. - Revised the effort estimate to 5-9 senior-engineer days and noted why this scope is not compatible with a single autonomous coding session (prior worker attempts repeatedly stalled or fabricated phantom pushes). No code changes; planning document only. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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…cade fix (#1826) * Scaffold G1 S5–S8 follow-up plan Adds docs/NATIVE_EVMYULLEAN_G1_FOLLOWUP_PLAN.md as the planning document for the follow-up PR after #1822. The doc decomposes the remaining G1 work (S5–S8 in NATIVE_EVMYULLEAN_TRANSITION.md) into a DAG of seven node layers (A IR-side lemmas, B native harness lemmas, D Revived constructors, E/F SelectorHitSuccessBridge chains and label-prefix variants, G `hUserBodyHalt` premise drop), and proposes a four-wave parallel orchestration strategy across eight worker tasks. Each node has a clean per-file definition of done and a universal "zero sorry, zero new axiom, build green" acceptance gate. The doc also enumerates four alternative approaches (predicate refactor, direct semantic equivalence, tactic-driven wiring, dispatcher-shape normalization) with pros/cons, recommending the straight-line plan as the safest path and revisiting ALT-1/ALT-3 as a post-S8 cleanup. No code changes; doc-only scaffolding for the next PR. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * docs: add implementation research addendum to G1 S5-S8 plan Captures concrete code-level facts gathered while reviewing the post-#1822 tree for the S5-S8 follow-up: - Verified line numbers for every shipped Revived leaf constructor and the one shipped chain (`of_empty_body`). - Corrected the original plan: the `of_leave_body` success-bridge chain is NOT pre-existing - it must be authored alongside E3, E4, E5. - Documented the per-body-shape preservation status: `empty_block` and `comment` preservation lemmas already ship; `Leave` and `NativePreservableStraightStmts` preservation are net-new work. - Pointed F1 readers at the redundancy with E5: F1 and E5 describe the same body shape `[.comment text]`, so F1 can be dropped once E5 lands. - Listed concrete file insertion points for Layers A, B, D, and the call-site sweep required for Layer G. - Revised the effort estimate to 5-9 senior-engineer days and noted why this scope is not compatible with a single autonomous coding session (prior worker attempts repeatedly stalled or fabricated phantom pushes). No code changes; planning document only. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * G1 Layer B: harness append/leave equation helpers for switch-id dispatcher Adds three lemmas to the native dispatcher harness that the consumer-side Revived constructors in Compiler/Proofs/EndToEnd.lean (Layer D) will need to thread a NativePreservableStraightStmts-derived prefix through a switch case body: * exec_block_append_eq_of_continue (B3): equation form of exec_block_append_ok; given the left prefix evaluates to .ok mid at fuel + left.length + k, executing left ++ right at the same total fuel coincides with executing right on mid at fuel + k. Used by B1. * exec_block_lowerStmtsNativeWithSwitchIds_with_leave_ok_eq_of_NativeBlockPreservesWord (B1): splices a NativePreservableStraightStmts-derived prefix in front of .Leave at the canonical fuel + suffixLen + native.length + 10 budget used by the dispatcher harness, producing .ok mid.setLeave. * exec_block_lowerStmtsNativeWithSwitchIds_ok_eq_of_NativeBlockPreservesWord (B2): trivial no-leave variant via List.append_nil; keeps consumers free of fuel-arithmetic plumbing. These are pure facts about EvmYul.Yul.exec and the Block reduction rule, matching the "Layer B — Native harness lemmas" specification in docs/NATIVE_EVMYULLEAN_G1_FOLLOWUP_PLAN.md (lines 69-85). No new sorry, no new axiom. PrintAxioms registry regenerated (5212 → 5215 entries). lake build green, make check green. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * Layer A: IR-side observational-equality lemmas (G1 S5-S8 follow-up) Adds A1, A2, A3 IR-side observational-equality lemmas in Compiler/Proofs/IRGeneration/IRInterpreter.lean and registers them in PrintAxioms.lean. Uses option (b) inline IR-side predicate IRStmtPreservesObs to avoid the EvmYulLeanNativeHarness import cycle. * Layer A: weaken IRStmtPreservesObs predicate (drop vacuous storage/events equality) The original IRStmtPreservesObs required state'.storage = state.storage AND state'.events = state.events. This is FALSE for most NativePreservableStraightStmt constructors (sstore, log0..log4, tstore, mstore, etc., which all mutate state), making the predicate unsatisfiable for any non-trivial prefix and rendering A1/A2 vacuously true. The corrected predicate just claims execIRStmt terminates in `.continue _`. This is genuinely satisfiable by the 17 non-terminator constructors of NativePreservableStraightStmt. Storage and event correspondence between IR and native runs is properly the responsibility of the bridge-side machinery (harness state projection), not a per-stmt IR invariant. A1 and A2 keep the same names and structures, with the storage/events conjuncts dropped from their conclusions. A3 unchanged. Local validation: lake build exit 0 make check exit 0 (802 tests passed) zero new sorry/axiom in Compiler/ vs cca8c5d (base) * docs: addendum on Layer A predicate evaluability issue + recommended path Records the architectural finding from the May 2026 implementation pass: - Layer A's IRStmtPreservesObs (even after ade52b0 weakening) is only satisfied unconditionally by .comment text. For let_/assign/sstore/ log/etc, IR semantics revert when expression evaluation fails, so the per-stmt predicate (∀ state, .continue _) is too strong. - letMany unconditionally reverts in current IR semantics. - Recommended forward path: state-relative predicate IRStmtPreservesObs (stmt) (state) so A1/A2 can thread state through the inductive proof. - Substrate caveat: 4/4 worker spawns failed during this session. Layer A's lemmas (A1, A2, A3) remain in the tree and compile; they provide list-induction scaffolding usable by callers who can supply the per-stmt witness via a different route. D1's full implementation will need either the state-relative predicate or an inline per-stmt induction. * Layer A scaffolding: LetManyFree + NotTerminator side-condition helpers Adds two purely-syntactic predicates on YulStmt that Layer D's prefix hypotheses need: - LetManyFree stmt — excludes Yul .letMany. Compiled internal/external calls emit .letMany (Compile.lean:270,276,282), but the simple IR executor execIRStmt returns .revert on .letMany by design — those bodies use the contract-aware execIRStmtsWithInternals path instead. D1/D2's "preStmts ++ [.leave]" prefix needs each stmt to actually .continue in IR, so .letMany must be excluded. - NotTerminator stmt — excludes the three IR-side terminators (expr_stop/return/revert). These are valid NativePreservableStraightStmt constructors but produce .stop/.return/.revert rather than .continue, so they break the prefix-then-leave shape. Both predicates ship with @[simp] proofs for the common non-letMany / non-terminator constructors so they discharge automatically in callers. Validation: lake build exit 0 make check exit 0 (802 tests, "All checks passed") PrintAxioms.lean regenerated to 5227 theorems (+9 public) zero new sorry, zero new axiom in Compiler/ vs cca8c5d * Layer A: add state-relative IRStmtPreservesObsAt with unconditional comment/leave proofs Adds a state-relative variant of IRStmtPreservesObs that pins the predicate to a specific IRState. This is what Layer D's cross-cast actually needs: constructors like let_/assign/sstore depend on evalIRExpr succeeding, which is state-dependent. Only .comment / .leave / .funcDef satisfy the state-quantified version unconditionally. - def IRStmtPreservesObsAt (state) (stmt) — state-relative version - theorem IRStmtPreservesObs_iff_forall_state — bridges to existing state-quantified predicate - @[simp] proofs IRStmtPreservesObsAt_comment, _leave (unconditional) The non-trivial constructors (let_/assign/expr_*) will need additional evaluability witnesses tying their expressions to the state's variable bindings. That work is deferred to a future commit. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated to 5231 theorems (+4 public) zero new sorry, zero new axiom in Compiler/ vs cca8c5d * Layer A: cross-cast lemmas for let_/assign/sstore (state-relative) Adds three IRStmtPreservesObsAt cross-cast lemmas, each conditional on an expression-evaluability witness: - IRStmtPreservesObsAt_of_let_ — let_ name value - IRStmtPreservesObsAt_of_assign — assign name value - IRStmtPreservesObsAt_of_sstore_lit_expr — expr (sstore [lit slot, valExpr]) Each takes a hypothesis (∃ v, evalIRExpr state expr = some v) to discharge the .revert branch of execIRStmt. Pattern is uniform; the remaining constructors (log0..log4, tstore, mstore, mstore8, calldatacopy, returndatacopy, sstore-of-mappingSlot, sstore-of-ident, sstore-of-add, expr_call general) follow the same shape. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+3 public) zero new sorry, zero new axiom * Layer A: remove iff_forall_state lemma (CI Lean 4.22.0 mis-parses identifier) The lemma `IRStmtPreservesObs_iff_forall_state` (added in af6974e) caused CI's stricter Lean (v4.22.0) to auto-bind `IRStmtPreservesObs` as a free type variable in the theorem signature, failing with "Function expected" at the use site. Local Lean was lenient. Removing the lemma — it was not load-bearing for any downstream theorem; the two predicates `IRStmtPreservesObs` and `IRStmtPreservesObsAt` stand alone. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (-1 public) zero new sorry, zero new axiom * Layer A: cross-cast batch 2a (tstore, mstore) Two more state-relative IRStmtPreservesObsAt cross-cast lemmas in the same pattern as _of_sstore_lit_expr: - IRStmtPreservesObsAt_of_tstore — expr (tstore [offsetExpr, valExpr]) - IRStmtPreservesObsAt_of_mstore — expr (mstore [offsetExpr, valExpr]) Each takes two evaluability hypotheses (offset + val), discharges the .revert branches. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+2 public) zero new sorry, zero new axiom * Layer A: cross-cast batch 2b (mstore8, calldatacopy, returndatacopy) Three more IRStmtPreservesObsAt cross-casts. Unlike sstore/mstore/tstore (which IR semantics models explicitly), these three fall through the opaque `.continue state` branch in execIRStmt — the IR evaluator only checks that the call's args evaluate, then leaves state unchanged. - IRStmtPreservesObsAt_of_mstore8 - IRStmtPreservesObsAt_of_calldatacopy - IRStmtPreservesObsAt_of_returndatacopy Each takes a single (∃ v, evalIRExpr state call = some v) witness for the whole call expression. The IR model's lack of mstore8 byte-effect / calldata-copy memory-write modeling is a known limitation; the bridge to native handles those effects on the harness side via state projection. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+3 public) zero new sorry, zero new axiom * Layer A: cross-cast batch 2c (log0..log4) Five IRStmtPreservesObsAt cross-casts for the YulLog family. Each goes through execIRStmt's `.call func args` branch with isYulLogName=true, unfolding evalIRExprs over the arg list and applyYulLogCall? to bind the new state via state.appendYulLog. - IRStmtPreservesObsAt_of_log0 (2 eval witnesses) - IRStmtPreservesObsAt_of_log1 (3) - IRStmtPreservesObsAt_of_log2 (4) - IRStmtPreservesObsAt_of_log3 (5) - IRStmtPreservesObsAt_of_log4 (6) The proof structure is uniform: obtain each eval witness, refine with state.appendYulLog as the continuation state, simp through execIRStmt / evalIRExprs / applyYulLogCall? + Option.bind + rfl. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+5 public) zero new sorry, zero new axiom * Layer A: cross-cast batch 3a (sstore_mappingSlot, sstore_ident) Two more IRStmtPreservesObsAt cross-casts for sstore variants the compiler emits: - IRStmtPreservesObsAt_of_sstore_mappingSlot — sstore at a slot computed via mappingSlot(base, key). Takes three eval witnesses. - IRStmtPreservesObsAt_of_sstore_ident — sstore at a slot read from a local variable. Takes an `IRState.getVar` witness for the ident plus an eval witness for the value. These cover the bridged-straight sstore cases in BridgedStraightStmt (line ~57-67 of EvmYulLeanBridgePredicates.lean) other than the literal-slot case shipped earlier and the .add case still to come. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+2 public) zero new sorry, zero new axiom * Layer A: cross-cast batch 3b (sstore_add + general expr_call_opaque) Two more IRStmtPreservesObsAt cross-casts that complete the per-stmt coverage for the bridged-straight fragment: - IRStmtPreservesObsAt_of_sstore_add — sstore at slot computed by add(left, right). Takes the slot-eval and val-eval witnesses. - IRStmtPreservesObsAt_of_expr_call_opaque — general-form catchall for any `.expr (.call func args)` whose `func` is not one of the special builtins (sstore/mstore/tstore/stop/return/revert/log*). Discharged by case-splitting on args shape and ruling out each structural pattern via the function-name hypotheses. After this commit, all atomic NativePreservableStraightStmt constructors (excluding letMany + the 3 terminators) have a state-relative cross-cast lemma that produces IRStmtPreservesObsAt given evaluability of the relevant sub-expressions. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+2 public) zero new sorry, zero new axiom * Layer A: strengthen IRStmtPreservesObsAt + StmtsContinueFrom + state-threaded A1/A2 Substantial Layer A foundation work setting up next steps: 1. Strengthen IRStmtPreservesObsAt from ∀-∃ to ∃-∀ form: def IRStmtPreservesObsAt state stmt := ∃ state', ∀ fuel, execIRStmt (fuel + 1) state stmt = .continue state' The witness state is now declared fuel-independent up front — this matches the actual proofs (each cross-cast computes a single state' that works for all fuels) and lets the predicate compose cleanly with list-induction without re-deriving fuel irrelevance at each step. 2. All 18 cross-cast proofs (comment, leave, let_, assign, sstore × 4, tstore, mstore, mstore8, calldatacopy, returndatacopy, log0..4, expr_call_opaque) updated to the new shape via `refine ⟨state', fun _ => ?_⟩` — same proofs, just reorder the quantifier handling. 3. Add `StmtsContinueFrom (state : IRState) : List YulStmt → Prop` — recursive state-threaded predicate carrying per-step continuation witnesses with fuel-independence. 4. Add state-threaded A1 / A2: - execIRStmts_continue_of_StmtsContinueFrom_pre_leave - execIRStmts_continue_of_StmtsContinueFrom_falling_through Both consume StmtsContinueFrom and produce existential continuation for execIRStmts at the right fuel budget. These are the versions D1 and D2 will actually use (the original state-quantified A1/A2 only apply to comment/leave-prefix bodies; the threaded variants apply to ANY prefix whose per-stmt witnesses can be supplied by the dispatch theorem from NativePreservableStraightStmt + eval witnesses). 5. Shorten original `_pre_leave` proof (remove redundant `show` lines) so it no longer trips the 50-line proof-length audit. Net change: +90 LoC. Sets up the dispatch theorem (next turn) which will assemble `StmtsContinueFrom state stmts` from `NativePreservableStraightStmts stmts + LetManyFree stmts + NotTerminator stmts + per-stmt evaluability`. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated zero new sorry, zero new axiom * Layer A: composition helpers for StmtsContinueFrom Three small introduction lemmas to make D1/D2 builders cleaner: - @[simp] StmtsContinueFrom_nil — trivial nil case. - StmtsContinueFrom.cons_of_witness — cons given a per-step ∀-fuel witness and a tail witness. - StmtsContinueFrom.cons_of_IRStmtPreservesObsAt — cons given an IRStmtPreservesObsAt witness (destructures internally to expose the next-state binding to the tail continuation). These mirror the shape produced by the 18 cross-cast lemmas, so D1's construction of a StmtsContinueFrom witness for a NativePreservableStraightStmts prefix becomes a list induction with `cons_of_IRStmtPreservesObsAt` at each step. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated (+3 public) zero new sorry, zero new axiom * Layer A: fix CI red on d333e45 (dedup + unused simp args) Two issues from prior commit: 1. StmtsContinueFrom_nil declared twice (out-of-band push added a dot-notation set of helpers at line 1609+; my earlier underscore versions at line 1530+ conflicted). Removed my duplicates; kept the dot-notation set (StmtsContinueFrom.cons_of_witness, .cons_of_IRStmtPreservesObsAt). 2. _of_expr_call_opaque's [a, b] arm had three simp args (hReturnFalse, hRevertFalse, hNotLog) that CI's linter.unusedSimpArgs flagged. These were carry-over from earlier experimentation — the kernel reduces the match arms directly given hNotSStore/hNotMStore/hNotTStore. Removed. Validation: lake build exit 0 make check exit 0 PrintAxioms.lean regenerated zero new sorry, zero new axiom * Layer A: remove final unused simp args in expr_call_opaque CI linter.unusedSimpArgs flagged hNotSStore/hNotMStore/hNotTStore/hNotLog across the four arms of _of_expr_call_opaque's args case analysis. Simp's match-reduction discharges the special-case branches via constructor inequality on string literals at the outer level, so the explicit non-equality hypotheses are unused as rewrite rules. Hypothesis parameters retained for caller-side documentation. Validation: lake build exit 0 make check exit 0 zero new sorry, zero new axiom * Layer A: fix CI strict-Lean unsolved-goals on opaque expr_call branches Three Layer A cross-cast theorems for opaque fallthrough builtins (`mstore8`, `calldatacopy`, `returndatacopy`) were failing on the EVMYulLean fork probe (Lean 4.22.0, strict mode) because `simp only` could not fully reduce the chained `match e with | .call "..." [...] => ... | .call func args => if isYulLogName func then ... else ...` even with the appropriate evaluation hypothesis. Full `simp` does reduce, but `linter.unusedSimpArgs` then flags load-bearing simp args as "unused" because they are consumed by match-reduction rather than direct rewrites. Resolution: - Set `linter.unusedSimpArgs false` at file scope (matches the existing precedent in `Compiler.Proofs.IRGeneration.Function.lean:11`). - Switch the three opaque-fallthrough cross-casts from `simp only` + `rfl` to plain `simp` with the same simp set; the linter no longer flags the auxiliary args as unused. - Apply the same `simp` (vs `simp only`) shape to the five log cross-casts (`log0`..`log4`) for consistency. - Delete `IRStmtPreservesObsAt_of_expr_call_opaque` (the catch-all cross-cast over generic call shapes); it was the source of the cascading linter failures and its case is covered by the per-builtin cross-casts that the Layer-D dispatch will actually consume. - Regenerate `PrintAxioms.lean` (-1 theorem). Local validation: make test-evmyullean-fork → "EVMYulLean fork conformance probe passed." (build 1134/1134 green, including Compiler.Proofs.IRGeneration.IRInterpreter and the full Compiler.Proofs.EndToEnd). No new sorry, no new axiom. Layer-A constructor surface for Layer D is unchanged except for the deletion of the generic-opaque entry. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * Layer A: restore expr_call_opaque cross-cast + add funcDef Two additions to the Layer A cross-cast surface that the Layer D dispatch will consume: 1. Restore IRStmtPreservesObsAt_of_expr_call_opaque (deleted in b7ed463 to fix CI strict-Lean unsolved-goals). The proof now uses `cases args` to enumerate argument-list shapes (0/1/2/3+) before applying `simp` with the specific non-builtin hypotheses, avoiding the cascading-match reduction issue that motivated the original deletion. The hypotheses are simplified: hNotRevert and hNotReturn become plain inequalities (func ≠ "revert" / "return") rather than the awkward universally- quantified args-bound forms. 2. Add IRStmtPreservesObsAt_funcDef. Mirrors the structure of IRStmtPreservesObsAt_comment and IRStmtPreservesObsAt_leave: the IR semantics for `.funcDef _ _ _ _` is unconditional `.continue state`, so the cross-cast holds at every state. Used by the BridgedStraightStmt `.funcDef` constructor in the Layer D dispatch. PrintAxioms.lean regenerated (+2 theorems: 5250 → 5252). Local validation: `make test-evmyullean-fork` → "EVMYulLean fork conformance probe passed" (1134/1134 green, including the full Compiler.Proofs.EndToEnd target). Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * upstream/main fix candidate: mulDiv512Down/Up missing cases in SupportedSpec.lean Upstream main commit 6b2af37 (#1846, "Add mulDiv512Down / mulDiv512Up codegen with FullMath Yul helper") introduced new Expr constructors `mulDiv512Down` / `mulDiv512Up` but did not update the 9 helper functions in SupportedSpec.lean that explicitly enumerate Expr cases. This results in CI build failure on main 6b2af37 (run 25764352385) with 9 "Missing cases" errors at lines 556, 683, 724, 762, 804, 854, 898, 940, 983 — each citing "Expr.mulDiv512Up _ _ _". This commit applies the conservative fix: add `| .mulDiv512Down a b c | .mulDiv512Up a b c` to each affected pattern, sharing the body with the existing `mulDivDown`/`mulDivUp` cases (which are semantically the same shape: 3 expression args, no new helper surface introduced). Local validation: lake build now passes the "Missing cases" stage. A separate upstream Lean elaborator bug (`enableRealizationsForConst` failure at SupportedSpec.lean:5694) still blocks the SupportedSpec build, but that's an unrelated issue. This patch is intended to be cherry-picked into upstream main. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * upstream/main fix: paramDynamicHeadWord + wildcard expansion in SupportedSpec Fixes a 2nd round of upstream main bugs that PR #1826's CI surfaces (commits cf5cb84 + 6b2af37 added 3 new Expr constructors — paramDynamicHeadWord, mulDiv512Down, mulDiv512Up — without updating SupportedSpec.lean's exhaustive case-matches). Three structural fixes: - Add `.paramDynamicHeadWord _ _` case to 9 helper-surface functions (exprTouchesUnsupportedConstructorRawCalldataSurface, exprTouchesUnsupportedCoreSurface, exprTouchesUnsupportedStateSurface, exprTouchesUnsupportedCallSurface, exprTouchesUnsupportedHelperSurface, exprTouchesInternalHelperSurface, exprTouchesUnsupportedForeignSurface, exprTouchesUnsupportedLowLevelSurface, exprTouchesUnsupportedContractSurface). Conservative semantics: paramDynamicHeadWord returns true (touches unsupported surface) for the constructor-context, core, state, and contract surface checks, since it reads calldata; returns false (does not touch unsupported) for call/helper/foreign/lowLevel surfaces. - Expand wildcard `| _ => []` in exprInternalHelperCallNames to explicit enumeration of all leaf Expr constructors plus the `adtConstruct` recursive case, matching the pattern of upstream commit 34063ed (#1842) which fixed the same eq_def heartbeat ceiling issue in ValidationCalls.lean and ValidationInterop.lean. Without this, Lean 4.22.0's eq_def deriver hits the 200K-heartbeat ceiling because each new Expr constructor enlarges the wildcard's complement to enumerate. - Add file-level `set_option maxHeartbeats 4000000` (cosmetic; doesn't propagate to eq_def deriver but provides headroom for normal proofs). Local validation: build now progresses past the structural bugs to downstream cascading "Alternative not provided" errors at lines 3133, 3523, 3722, 4092 (and several "unsolved goals" at 4352+) — these are proofs that case-split on Expr and need the new constructors as explicit cases. Those fixes are mechanical but tedious (~12+ case additions across many proofs); deferring to the upstream maintainer or a follow-up PR. This commit is intended to be cherry-picked into upstream main alongside #1843/#1846 to keep main's CI green. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * upstream/main fix: add paramDynamicHeadWord/mulDiv512 to 6 cases-on-Expr proofs Continues the cascade of fixes for upstream main commits cf5cb84 + 6b2af37 (which added paramDynamicHeadWord, mulDiv512Down, mulDiv512Up without updating dependent code). Each `cases expr` proof in SupportedSpec.lean that enumerates Expr constructors needs explicit arms for the 3 new constructors. Sites updated: - exprTouchesInternalHelperSurface_eq_false_of_helperSurfaceClosed (3201) → mulDiv512Down/Up share the mulDivDown/Up arm; paramDynamicHeadWord is its own arm using `simp [exprTouchesInternalHelperSurface]` - exprTouchesUnsupportedCallSurface_eq_featureOr (3605) → mulDiv512 share with mulDivDown/Up; paramDynamicHeadWord uses simp - exprTouchesUnsupportedContractSurface_eq_false_of_featureClosed (3796) → mulDiv512 share; paramDynamicHeadWord falls into hcore-impossible (since exprTouchesUnsupportedCoreSurface paramDynamicHeadWord = true) - exprTouchesUnsupportedCallSurface_eq_false_of_coreClosed (3878) → mulDiv512 share; paramDynamicHeadWord uses hcore-impossible - exprTouchesUnsupportedHelperSurface_eq_false_of_contractSurfaceClosed (4146) → mulDiv512 share; paramDynamicHeadWord uses hsurface-impossible - exprUsesArrayElement_eq_false_of_coreClosed (4351) → mulDiv512 share; paramDynamicHeadWord uses hcore-impossible - exprUsesStorageArrayElement_eq_false_of_coreClosed (4401) → same pattern - exprUsesDynamicBytesEq_eq_false_of_coreClosed (4453) → same pattern Local validation: `lake build Compiler.Proofs.IRGeneration.SupportedSpec` now passes. Subsequent build chain reveals the same upstream-bug pattern in `Compiler/Proofs/IRGeneration/SourceSemantics.lean` (evalExprWithHelpers/evalExprListWithHelpers/execStmtWithHelpers/ interpretInternalFunctionFuel mutual block, ~25 wildcards) — that's the next file to patch, but is a separate, larger commit. This is upstream main's work. Documented as a fix-candidate ready to cherry-pick into upstream alongside #1843/#1846. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * allowlist: 2 SupportedSpec proofs that grew past 50 lines The two proofs `exprUsesStorageArrayElement_eq_false_of_coreClosed` and `exprUsesDynamicBytesEq_eq_false_of_coreClosed` grew to 51-52 lines after I added paramDynamicHeadWord/mulDiv512Down/Up arms in commit dfdd124. Each new arm is a single mechanical case (`simp [exprTouchesUnsupportedCoreSurface] at hcore`); splitting the proof into smaller lemmas would just duplicate the same boilerplate. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * upstream/main fix: SourceSemantics — wildcard expansion + new constructor cases Continues the cascade of upstream main fixes (commits cf5cb84 + 6b2af37 added paramDynamicHeadWord, mulDiv512Down, mulDiv512Up to Expr without updating dependent code). Three structural fixes in SourceSemantics.lean: 1. Expand wildcard `| _ => none` in evalExprWithHelpers (line 2691) into explicit enumeration of paramDynamicHeadWord, mulDiv512Down/Up, plus 16 other previously-wildcarded constructors. This fixes the eq_def heartbeat ceiling that was triggering simp/realization failures at every downstream call site. 2. Apply the same wildcard expansion to the standalone `evalExpr` function (line 853) — same heartbeat issue, separate scope. 3. Add 3 new evalExpr_xxx rfl-lemmas (`evalExpr_mulDiv512Down`, `evalExpr_mulDiv512Up`, `evalExpr_paramDynamicHeadWord` — all `= none` by definition) so the cases-on-Expr proof at line 3577 (evalExprWithHelpers_eq_evalExpr_of_helperSurfaceClosed) can use the `unfold + rw + reflective rewrite` pattern instead of running into heartbeat-prone `simp` recursion. 4. Add `set_option maxHeartbeats 1000000 in` before the mutual block at line 3557 to give the recursive proofs in that block more budget (defensive; current proofs fit in 200K but the budget is tight). 5. Add 3 new arms (`mulDiv512Down a b c`, `mulDiv512Up a b c`, `paramDynamicHeadWord name offset`) to the cases-on-Expr proof at line 3577 using the `unfold evalExprWithHelpers; rw [evalExpr_*]` pattern. Local validation: `lake build Compiler.Proofs.IRGeneration.SourceSemantics` now passes. Downstream files (ContractShape.lean and GenericInduction.lean) still need similar treatment — those are separate, smaller commits. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * upstream/main fix: total defs + new SupportedSpec _eq_false lemmas + cascade Cascade fixes for upstream commits cf5cb84 (paramDynamicHeadWord) and 6b2af37 (mulDiv512Down/Up) that added Expr constructors but broke downstream proofs. UsageAnalysis.lean: - Convert exprUsesParamDynamicHeadWord, stmtUsesParamDynamicHeadWord, exprUsesMulDiv512, stmtUsesMulDiv512 from `partial def` to total `def` with `mutual` blocks, helper exprList/stmtList/matchBranches functions, and `termination_by sizeOf`. Partial defs were kernel-opaque, blocking downstream proofs by induction. SupportedSpec.lean: - Mark `mulDiv512Down/Up` as touching unsupported Core+Contract surface (consistent with `paramDynamicHeadWord => true`); they have no `ExprCompileCore` constructor, so the surface predicate must reject them. - Split four cases-on-Expr proofs (mulDivDown vs mulDiv512Down/Up) where the combined recursion no longer typechecks under the new surface semantics. - Add 14 new lemmas: exprCompileCore_uses{ParamDynamicHeadWord,MulDiv512}_false, exprListCompileCore_…, stmtListCompileCore_…, stmtListTerminalCore_…, _eq_any bridges, supportedStmtList_…_false, and SupportedSpec[ExceptMappingWrites].contractUses{…}_eq_false. ContractShape.lean / Contract.lean: - Wire new flag-eq-false hypotheses into the three rfl-failing `compileValidatedCore_ok_yields_internalFunctions_nil` proofs. GenericInduction.lean: - Add `mulDiv512Down/Up` cases to `exprCompileCore_of_exprTouchesUnsupportedContractSurface_eq_false`. CompilationModelFeatureTest.lean: - Declare `external echo` in `adtAliasPayloadMemoizesExprSpec`. Upstream's Issue #732 validation now rejects undeclared external call targets. scripts/check_proof_length.py: - Allowlist 4 mechanical inductions whose case count is bounded by the number of SupportedStmtList constructors. PrintAxioms.lean: - Regenerated for the 4 new public theorems and 14 private helpers. Local: lake build green, make check green, zero new sorry/axiom. * G1 E3 + E5: success-bridge chains for of_block_empty and of_singleton_comment Two new private theorems each in EndToEnd.lean (one preserves bridge, one success bridge per leaf): - NativeGeneratedSelectorHitUserBodyPreservesBridgeAtFuel.of_block_empty - NativeGeneratedSelectorHitSuccessBridge.of_block_empty - NativeGeneratedSelectorHitUserBodyPreservesBridgeAtFuel.of_singleton_comment - NativeGeneratedSelectorHitSuccessBridge.of_singleton_comment Both leaves lower to native shape `[.Block []]`, so the per-stmt preservation half is discharged by the existing `NativeStmtPreservesWord_empty_block` harness lemma (no new harness work). The success bridge follows the standard chain template via `of_selected_user_body_exec_only_and_preserves`, pairing the existing `ExecOnlyBridgeAtFuelRevived.of_<leaf>` constructor with the new preserves bridge. E2 (`of_leave_body`) and E4 (`of_block_leave`) still blocked on a missing `NativeStmtPreservesWord_leave` harness lemma (per plan §358). E6/E7 blocked on D1/D2. PrintAxioms.lean regenerated (4 new private theorems). Local: lake build green, make check green, zero new sorry/axiom. * Add parallel _revived preservation predicates with leave-singleton bridge Plan §358's proposed `NativeStmtPreservesWord_leave` is structurally false because `state[name]!` via GetElem falls through the empty `default` Finmap for Checkpoint states. The Leave-ending exec produces `Checkpoint (.Leave shared store)` whose `[name]!` is ⟨0⟩, not the inner-store value. Adds: - 5 reviveJump simp lemmas (Ok, OutOfFuel, Leave, Continue, Break) - NativeBlockPreservesWord_revived / NativeStmtPreservesWord_revived defs that read the inner store via `state.reviveJump[name]!` - NativeStmtPreservesWord_revived_leave (provable in NEW form) - NativeBlockPreservesWord_revived_nil/cons/singleton builders The original NativeBlockPreservesWord/NativeStmtPreservesWord/Expr/EvalArgs predicates are untouched, so 145+ existing usages in EndToEnd.lean and the existing harness proofs remain unchanged. Next: add NativeGeneratedSelectorHitUserBodyPreservesBridgeAtFuel_revived def and E2/E4 success-bridge chains in EndToEnd.lean using the _revived predicates. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * Add NativeStmtPreservesWord_revived_empty_block Companion to NativeStmtPreservesWord_revived_leave from 5f8e602. The empty-block case is trivial in the revived form: exec _ (.Block []) _ s returns s unchanged, so final.reviveJump[name]! = state.reviveJump[name]! follows directly from the hypothesis. Useful for E1/E3 chains that wish to be expressed in _revived form without going through the OLD-form predicate. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * Regenerate PrintAxioms.lean for Path B revived predicates Adds the new reviveJump simp lemmas and _revived predicates introduced in 5f8e602 + 2f8a801 to the axiom audit roster. No new sorry, no new axiom — these are all standard theorems. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * Cascade fix for upstream Expr.arrayElementDynamicMember{Length,Element} Upstream commits 041a783 (G1: length on struct-array elements) and 300fd81 (G2: arrayElementDynamicMemberElement constructor) added two new Expr constructors but did not update SourceSemantics.lean's evalExprWithHelpers unmodeled-list nor the evalExprWithHelpers_eq_evalExpr_of_helperSurfaceClosed match. Adds: - evalExpr_arrayElementDynamicMember{Length,Element} eval lemmas (= none, rfl) - New constructors in the unmodeled-list of evalExprWithHelpers - Match cases in evalExprWithHelpers_eq_evalExpr_of_helperSurfaceClosed - PrintAxioms.lean regenerated lake build + make check both green locally. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> * Add _revived block adapter + .Block [.Leave] composition Two small foundation lemmas building on the Path B core: - NativeStmtPreservesWord_revived_block: trivial adapter mirroring the OLD-form NativeStmtPreservesWord_block (witness is the hypothesis) - NativeStmtPreservesWord_revived_block_leave: composition for the lowered shape of IR [.block [.leave]] (E4 target body) Both are pure compositions using the _revived predicates from 5f8e602. PrintAxioms regenerated. Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com> Co-authored-by: Layer B Worker <worker@verity.lfg> Co-authored-by: Claude Worker <claude-worker@anthropic.com>
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Summary
Retargets Verity's public EVMYulLean correctness surface away from backend-parameterized oracle spellings and toward native EVMYulLean-named entry points, and lands the first wave of leaf
ExecOnlyBridgeAtFuelRevivedconstructors so the Revived family covers every observational-no-opfn.bodyshape.Public-surface retarget
interpretYulRuntimeEvmYulLeanandinterpretYulRuntimeEvmYulLeanFuelwrappers...._via_reference_oraclenames; renamed the lower legacy Layer 3 theorem toyulCodegen_preserves_semantics_via_reference_oracleand guarded against restoring the bare oracle name....Interpreterto...EvmYulLean.defaultBuiltinBackendto.evmYulLean; addedlegacyBuiltinBackend := .verity,legacyEvalBuiltinCallWithContext, andlegacyExecYulFuelso old reference-oracle / bridge-comparison paths opt into legacy semantics explicitly.Native EndToEnd surface
nativeResultsMatchOn,sourceResultMatchesNativeOn, source/native composition theorem over the result surface.compile_preserves_native_evmYulLean_callDispatcher_of_generated_callDispatcher_match, plus helper-free and mapping-helper lowering wrappers.Leaf Revived constructors (G1 increments S1–S4)
On
NativeGeneratedSelectedUserBodyExecOnlyBridgeAtFuelRevived:.of_block_empty—fn.body = [.block []].of_block_leave—fn.body = [.block [.leave]].of_singleton_comment—fn.body = [.comment text]Together with the pre-existing
.of_empty_bodyand.of_leave_body, the Revived family now covers every body of shape[],[.leave],[.block []],[.block [.leave]],[.comment text]— the full observational-no-op family. Concrete contracts whose user body is a label-only stub now have a direct Revived bridge without going through the halt path..of_comment_consis intentionally deferred to the success-bridge wiring layer (per-leaf_with_label_prefixadapters); seedocs/NATIVE_EVMYULLEAN_TRANSITION.mdfor the structural rationale.Supporting infrastructure
exec_block_block_nil_ok_add_ten,exec_block_block_leave_ok_add_ten,exec_block_noop_block_head_eq,lowerStmtsNativeWithSwitchIds_comment_head_eq.nativeResultsMatchOn_execIRFunction_block_empty_body_markedPrefix,..._block_leave_body_markedPrefix,..._singleton_comment_body_markedPrefix.Invariants
sorry, zero new axioms.lake build Compiler.Proofs.EndToEndgreen.make checkvalidators (axioms, capability boundary, builtin boundary, doc check) pass.Verification
lake build Compiler.Proofs.EndToEndlake build Compiler.Proofs.YulGeneration.Backends.EvmYulLeanBridgeTestpython3 scripts/check_proof_length.pypython3 scripts/generate_print_axioms.py --checkpython3 scripts/check_native_transition_doc.pypython3 scripts/test_check_native_transition_doc.pypython3 -m unittest scripts.test_evmyullean_capabilitymake checkDeferred to a follow-up PR
The composite body shapes and the final premise drop share heavy proof infrastructure (whole-block per-slot preservation, IR
execIRStmtsfalling-through induction) that does not fit a single landable increment in this branch's budget. Seedocs/NATIVE_EVMYULLEAN_TRANSITION.md— the "G1 Incremental Plan" section has full constructor signatures, harness-lemma signatures, and proof sketches..of_nativePreservableStraightStmts_leave— bodies<straight-stmts>; leave. Companion lemma:execIRStmts_continue_of_nativePreservableStraightStmts_pre_leave(purely IR-side; recommended starting point for a follow-up worker)..of_bridgedStraightStmts_falling_through— bodies<straight-stmts>(no terminator). Deepest case; requires aligningexecIRFunction's fall-through extraction with the dispatcher's outer block exit.NativeGeneratedSelectorHitSuccessBridgeadapters, including per-leaf_with_label_prefixvariants that strip a leading.comment "label"head viaexec_block_noop_block_head_eq. Subsumes the deferred.of_comment_consshape.hUserBodyHaltfromcompile_preserves_native_evmYulLean_of_compile_ok_supported_generated_callDispatcheronce S5–S7 land.Long-standing items (orthogonal to this PR)
legacyExecYulFuelremains inReferenceOracle/Semantics.leanfor legacy/reference-oracle comparisons.EvmYulLeanRetarget.leanstill proves the EVMYulLean retarget by composing throughyulCodegen_preserves_semantics_via_reference_oracleand backend comparison machinery.Note
Medium Risk
Touches the public proof surface (arithmetic correctness lemmas) and CI caching/install logic; while semantics should be equivalent, regressions could break downstream proofs or CI reliability.
Overview
Retargets the public arithmetic proof surface to state wrapping/bitwise/shift facts directly in terms of the native
evalPureBuiltinViaEvmYulLeanevaluator, removing reliance on legacy oracle/bridge comparison lemmas while keeping historical theorem names.Exposes
compileMappingSlotReadandcompileMappingSlotChainfromExpressionCompile.leanso proof modules can reference the exact lowering shapes, and trims top-levelCompiler.leanimports to drop unused proof modules.CI updates: adds a sticky-disk pruning step for stale Lake packages, increases
verify.ymljob timeout, and hardenssetup-solcby caching per-version in-repo with PATH injection plus install/repair retries and version verification (instead of writing to/usr/local/bin).Reviewed by Cursor Bugbot for commit 06d2aea. Bugbot is set up for automated code reviews on this repo. Configure here.