AxDafny and LCB-Pro-Dafny benchmark agentic code generation with formal verification
arXiv·medium signal
AxDafny is a verifier-guided repair framework that iteratively generates Dafny implementations plus the invariants, assertions, and termination arguments needed to pass formal verification. It ships LCB-Pro-Dafny, a 250-problem competition-style benchmark with formal specs and a verifier-based harness. For builders exploring provably-correct code generation, this pairs an agentic loop with an executable ground-truth oracle instead of test-only signals.