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Anthropic and Theorem demonstrate formal software verification at scale with 180 million lines of Rocq proof code

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What happened.Anthropic and Theorem proved that large language models can automate machine-checked software verification across more than one hundred open-source libraries.

Why it matters.Traditional formal verification demanded decades of manual engineering from specialized mathematicians. Automated proof synthesis turns mathematical correctness into a repeatable CI pipeline step. Teams can now guarantee memory safety at the binary level without slowing release velocity.

The technical specifications:

  • Massive proof scale: Claude generated 180 million lines of Rocq code covering 239 fuzz-test entry points from Google OSS-Fuzz.
  • Assembly verification: Proofs operate directly on compiled RISC-V assembly binaries on Linux, mathematically guaranteeing zero crashes for inputs under 64 megabytes.
  • Latent bug discovery: The automated proof process uncovered and patched security vulnerabilities that had evaded trillions of prior fuzz-testing cycles.