Formal Verification of Foundry Tests
summary
Foundry property tests get expanded into Foundry Decay generated K specs — a simple suite became ~23,000 lines and 55 proof obligations — compiled to core and discharged with KVM prove. Foundry fuzz runs 256 inputs for a fuzzed test; Foundry times show summing to 2 is 364 µs and to 20 million ~10 s. KVM is initially ~3–4 orders slower, a new semantics compilation gives ~2 orders speedup so KVM ends up ~1 order slower; failing proofs require expert K work.
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