Extending Sledgehammer with SMT Solvers

Abstract. Sledgehammer is a component of Isabelle/HOL that employs firstorder automatic theorem provers (ATPs) to discharge goals arising in interactive proofs. It heuristically selects relevant facts and, if an ATP is successful, produces a snippet that replays the proof in Isabelle. We extended Sledgehammer to invoke satisfiability modulo theories (SMT) solvers as well, exploiting its relevance filter and parallel architecture. Isabelle users are now pleasantly surprised by SMT proofs for problems beyond the ATPs’ reach. Remarkably, the best SMT solver performs better than the best ATP on most of our benchmarks.

• Type: Journal
• Year: 2011
• Where: CADE
• Authors: Jasmin Christian Blanchette, Sascha Böhme, Lawrence C. Paulson
• Keywords: Automatic Theorem, CADE 2011, Interactive Proofs, Logical Reasoning, Parallel Architecture