Constraints for Argument Filterings

Abstract. The dependency pair method is a powerful method for automatically proving termination of rewrite systems. When used with traditional simplification orders like LPO and KBO, argument filterings play a key role. In this paper we propose an encoding of argument filterings in propositional logic. By incorporating propositional encodings of simplification orders, the search for suitable argument filterings is turned into a satisfiability problem. Preliminary experimental results show that our logic-based approach is significantly faster than existing implementations.

• Type: Conference
• Year: 2007
• Where: SOFSEM
• Authors: Harald Zankl, Nao Hirokawa, Aart Middeldorp
• Keywords: Argument filterings, Dependency Pair Method, Simplification Orders, SOFSEM 2007, Theoretical Computer Science