Proving termination of rewrite systems using bounds

  • Authors:
  • Martin Korp;Aart Middeldorp

  • Affiliations:
  • Institute of Computer Science, University of Innsbruck, Austria;Institute of Computer Science, University of Innsbruck, Austria

  • Venue:
  • RTA'07 Proceedings of the 18th international conference on Term rewriting and applications
  • Year:
  • 2007

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Abstract

The use of automata techniques to prove the termination of string rewrite systems and left-linear term rewrite systems is advocated by Geser et al. in a recent sequence of papers. We extend their work to non-left-linear rewrite systems. The key to this extension is the introduction of so-called raise rules and the use of tree automata that are not quite deterministic. Furthermore, we present negative solutions to two open problems related to string rewrite systems.