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Formal Verification with the Certora Prover

Talkat DeFi Security Summit 2022 · 2022-08-27..08-28· [security]
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A formal verifier that translates contracts plus specs in CVL domain-specific language into logical formulas and uses multiple SMT solvers to produce either a proof or a concrete example transaction counterexample. Timeouts are common but typically around two hours. Supports quantified checks over storage and arbitrary method calls, explicit invariants, revert-path reasoning and state rewind. Demonstrated finding an ERC‑20 transfer issue where sender==recipient leaves balances unchanged, then verifies successfully after adding the missing precondition.

AI-written summary · about

  1. 0:00Start
  2. 0:21Formal Verification with the Certora Prover
  3. 1:14Formal Verification vs. Fuzzing
  4. 2:41Certora Verficiation Language (CVL) Features
  5. 4:04Example / demo
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