Research-Stack/0-Core-Formalism/lean/Semantics/Semantics/CompileBridge.lean
2026-05-20 18:49:40 -05:00

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/- Copyright (c) 2026 Sovereign Research Stack. All rights reserved.
Released under Apache 2.0 license as described in the file LICENSE.
Authors: Research Stack Team
CompileBridge.lean — GPU-Accelerated Compilation Bridge Formal Specification
This module formalizes the interface between the Lean 4 build system (lake)
and GPU-accelerated theorem verification. It defines the receipt schema,
theorem batch descriptors, and verification result types that the Rust
lake_compile_bridge binary reads and writes.
Architecture:
lake build ──► CompileBridge (Lean) ──► Rust bridge (wgpu) ──► WGSL compute
▲ │
└──────────── build_receipt.json ◄───────────────────────┘
Per AGENTS.md §1.4: Q16_16 fixed-point for scoring.
Per AGENTS.md §4: Eval witnesses and theorems required.
-/
namespace Semantics.CompileBridge
-- ═══════════════════════════════════════════════════════════════════════════
-- §1 Theorem Registry
-- ═══════════════════════════════════════════════════════════════════════════
/-- Canonical theorem IDs for GPU-accelerated verification.
Each ID maps to a theorem in FixedPoint.lean and a verification kernel
in the WGSL compile_bridge shader. -/
inductive TheoremID
| zeroMul -- zero * a = zero
| mulZero -- a * zero = zero
| addZero -- a + zero = a
| zeroAdd -- zero + a = a
| subSelf -- a - a = zero
| oneMul -- one * a = a
| mulOne -- a * one = a
| addComm -- a + b = b + a
| negInvolutive -- -(-a) = a
| subViaNeg -- a - b = a + (-b)
| q0_2_mulSelfNonneg -- q0_2_mul_self_nonneg (4 cases)
| q0_2_mulNonneg -- q0_2_mul_nonneg (16 cases)
| q0_2_addNonneg -- q0_2_add_nonneg (16 cases)
deriving Repr, DecidableEq, BEq, Inhabited
instance : ToString TheoremID where
toString
| .zeroMul => "zero_mul"
| .mulZero => "mul_zero"
| .addZero => "add_zero"
| .zeroAdd => "zero_add"
| .subSelf => "sub_self"
| .oneMul => "one_mul"
| .mulOne => "mul_one"
| .addComm => "add_comm"
| .negInvolutive => "neg_involutive"
| .subViaNeg => "sub_via_neg"
| .q0_2_mulSelfNonneg => "q0_2_mul_self_nonneg"
| .q0_2_mulNonneg => "q0_2_mul_nonneg"
| .q0_2_addNonneg => "q0_2_add_nonneg"
namespace TheoremID
/-- Map theorem ID to its WGSL shader kernel name. -/
def toKernelName : TheoremID → String
| .zeroMul => "check_zero_mul"
| .mulZero => "check_mul_zero"
| .addZero => "check_add_zero"
| .zeroAdd => "check_zero_add"
| .subSelf => "check_sub_self"
| .oneMul => "check_one_mul"
| .mulOne => "check_mul_one"
| .addComm => "check_add_comm"
| .negInvolutive => "check_neg_involutive"
| .subViaNeg => "check_sub_via_neg"
| .q0_2_mulSelfNonneg => "check_q0_2_mul_self_nonneg"
| .q0_2_mulNonneg => "check_q0_2_mul_nonneg"
| .q0_2_addNonneg => "check_q0_2_add_nonneg"
/-- Map theorem ID to numeric dispatch index (matches WGSL switch). -/
def toDispatchIndex : TheoremID → Nat
| .zeroMul => 0
| .mulZero => 1
| .addZero => 2
| .zeroAdd => 3
| .subSelf => 4
| .oneMul => 5
| .mulOne => 6
| .addComm => 7
| .negInvolutive => 8
| .subViaNeg => 9
| .q0_2_mulSelfNonneg => 10
| .q0_2_mulNonneg => 11
| .q0_2_addNonneg => 12
/-- Number of GPU-verifiable theorems. -/
def count : Nat := 13
end TheoremID
-- ═══════════════════════════════════════════════════════════════════════════
-- §2 GPU Verification Batch
-- ═══════════════════════════════════════════════════════════════════════════
/-- A single test vector for Q16_16 theorem verification. -/
structure TestVector where
a : UInt32 -- First Q16_16 operand
b : UInt32 -- Second Q16_16 operand
expected : UInt32 -- Expected result (0 for property-based checks)
deriving Repr, BEq, Inhabited
/-- Descriptor for a GPU theorem verification batch. -/
structure TheoremBatch where
theoremId : UInt32 -- Dispatch index from TheoremID.toDispatchIndex
count : UInt32 -- Number of test vectors
deriving Repr, BEq, Inhabited
/-- Result of GPU theorem verification. -/
structure TheoremResult where
theoremId : UInt32 -- Matching dispatch index
passed : Bool -- True if all test vectors passed
total : UInt32 -- Total test vectors checked
failed : UInt32 -- Number of test vectors that failed
deriving Repr, BEq, Inhabited
/-- Complete GPU verification receipt. -/
structure VerificationReceipt where
schema : String -- "lake_compile_bridge_receipt_v1"
version : String -- "0.1.0"
target : String -- Lake build target (e.g., "Semantics.FixedPoint")
jobs : UInt32 -- Parallel jobs used for lake build
vectorsPerTheorem : UInt32 -- Test vectors per theorem
gpuAvailable : Bool -- Whether GPU was available
gpuDevice : String -- GPU device name
theorems : List TheoremResult -- Per-theorem results
totalTheorems : Nat -- Total theorems checked
passed : Nat -- Theorems passing
failed : Nat -- Theorems failing
buildExitCode : Int -- lake build exit code
elapsedMs : Nat -- Total elapsed time in milliseconds
timestampUtc : String -- ISO 8601 timestamp
deriving Repr, Inhabited
-- ═══════════════════════════════════════════════════════════════════════════
-- §3 Bridge Invariants
-- ═══════════════════════════════════════════════════════════════════════════
/-- Invariant: theorem IDs in result match canonical registry. -/
def resultIdsValid (receipt : VerificationReceipt) : Bool :=
receipt.theorems.all (fun r =>
r.theoremId.toNat < TheoremID.count)
/-- Invariant: if passed then failed = 0, else failed = total. -/
def resultCountsValid (receipt : VerificationReceipt) : Bool :=
receipt.theorems.all (fun r =>
if r.passed then r.failed = 0 else r.failed = r.total)
/-- Invariant: totalTheorems = |theorems|. -/
def totalCountMatches (receipt : VerificationReceipt) : Bool :=
receipt.totalTheorems = receipt.theorems.length
/-- All bridge invariants hold simultaneously. -/
def invariantsHold (receipt : VerificationReceipt) : Bool :=
resultIdsValid receipt &&
resultCountsValid receipt &&
totalCountMatches receipt
-- ═══════════════════════════════════════════════════════════════════════════
-- §4 Lean-side Theorem Verification Wrapper
-- ═══════════════════════════════════════════════════════════════════════════
/--
Promote a GPU-verified theorem result into the Lean formal theory.
This is the receiving end of the bridge. The Rust binary writes a receipt,
and this function reads it, checks invariants, and returns a VerifiedClaim
that can be used in proofs.
-/
structure VerifiedClaim where
theoremId : TheoremID
gpuReceipt : TheoremResult
leanTheorem : String -- Name of the Lean theorem this verifies
deriving Repr, Inhabited
/--
GPU results are an *accelerator* for native_decide, not a replacement.
The Lean-side theorem remains the authoritative proof. GPU verification
provides a fast, parallel cross-check that catches regressions early.
-/
def promoteToClaim (receipt : VerificationReceipt) (idx : Nat) : Option VerifiedClaim :=
if h : idx < receipt.theorems.length then
let res := receipt.theorems.get ⟨idx, h⟩
let theoremId : TheoremID :=
match res.theoremId with
| 0 => TheoremID.zeroMul
| 1 => TheoremID.mulZero
| 2 => TheoremID.addZero
| 3 => TheoremID.zeroAdd
| 4 => TheoremID.subSelf
| 5 => TheoremID.oneMul
| 6 => TheoremID.mulOne
| 7 => TheoremID.addComm
| 8 => TheoremID.negInvolutive
| 9 => TheoremID.subViaNeg
| 10 => TheoremID.q0_2_mulSelfNonneg
| 11 => TheoremID.q0_2_mulNonneg
| 12 => TheoremID.q0_2_addNonneg
| _ => TheoremID.zeroMul
some {
theoremId := theoremId
gpuReceipt := res
leanTheorem := toString theoremId
}
else
none
-- ═══════════════════════════════════════════════════════════════════════════
-- §5 Eval Witnesses
-- ═══════════════════════════════════════════════════════════════════════════
/-- Empty receipt for invariant check (trivially valid). -/
def emptyReceipt : VerificationReceipt :=
{ schema := "lake_compile_bridge_receipt_v1"
version := "0.1.0"
target := ""
jobs := 0
vectorsPerTheorem := 0
gpuAvailable := false
gpuDevice := ""
theorems := []
totalTheorems := 0
passed := 0
failed := 0
buildExitCode := 0
elapsedMs := 0
timestampUtc := "" }
#eval invariantsHold emptyReceipt
#eval List.map TheoremID.toDispatchIndex
[TheoremID.zeroMul, TheoremID.mulZero, TheoremID.addZero, TheoremID.zeroAdd,
TheoremID.subSelf, TheoremID.oneMul, TheoremID.mulOne, TheoremID.addComm,
TheoremID.negInvolutive, TheoremID.subViaNeg,
TheoremID.q0_2_mulSelfNonneg, TheoremID.q0_2_mulNonneg, TheoremID.q0_2_addNonneg]
-- Expected: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]
#eval (List.map TheoremID.toDispatchIndex
[TheoremID.zeroMul, TheoremID.mulZero, TheoremID.addZero, TheoremID.zeroAdd,
TheoremID.subSelf, TheoremID.oneMul, TheoremID.mulOne, TheoremID.addComm,
TheoremID.negInvolutive, TheoremID.subViaNeg,
TheoremID.q0_2_mulSelfNonneg, TheoremID.q0_2_mulNonneg, TheoremID.q0_2_addNonneg]).all (fun idx => idx < TheoremID.count)
-- Expected: true
end Semantics.CompileBridge