leanstral

You can formally verify Solana smart contracts by generating Lean 4 proofs for access control, state machines, and arithmetic safety. This automated process applies to Rust or Anchor programs and produces machine-checked proofs ensuring your contract cannot be exploited.

Generating Lean 4 proofs for Rust or Anchor programs requires a Mistral API key alongside the Rust and Lean toolchains. These dependencies are required to compile and validate the formal verification proofs iteratively.

Yes, formal verification proves an escrow program cannot be exploited by generating machine-checked Lean 4 proofs. The process handles access control, state machines, CPI correctness, and arithmetic safety by iteratively compiling and refining proofs until they succeed.

Automating SPEC.md generation for Solana programs is achieved by deriving specifications directly from existing IDLs or source code. This creates a baseline specification used to construct Lean 4 models and proofs for your smart contract.

Iterative compilation handles hard sub-goals by using the Mistral Leanstral model to automatically fill `sorry` markers in Lean 4 proofs. This solves difficult arithmetic safety verification steps while running `lake build` to refine proofs until they compile successfully.

Formal verification for Solana supports both raw Rust and Anchor programs. It generates Lean 4 proofs to verify access control, state machines, CPI correctness, and arithmetic safety across both program types.