On the Unreasonable Effectiveness of Property-Based Testing for Validating Formal Specifications (opens in new tab)

In this post, we show that property-based testing (PBT) is surprisingly effective for validating LLM-synthesised specifications of Lean programs: it is a cheap alternative to symbolic proofs, which helped to detect underspecification in 10% of the specs in state-of-the-art benchmarks for verified code generation.