Annotated Dependency Pairs for Full Almost-Sure Termination of Probabilistic Term Rewriting

arXiv (Cornell University)

Abstract

Dependency pairs (DPs) are one of the most powerful techniques for automated termination analysis of term rewrite systems. Recently, we adapted the DP framework to the probabilistic setting to prove almost-sure termination (AST) via annotated DPs (ADPs). However, this adaption only handled AST w.r.t. the innermost evaluation strategy. In this paper, we improve the ADP framework to prove AST for full rewriting. Moreover, we refine the framework for rewrite sequences that start with basic terms containing a single defined function symbol. We implemented and evaluated the new framework in our tool AProVE.

Authors 2

1. Jan-Christoph Kassing Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University , Aachen , Germany

2. Jürgen Giesl Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University , Aachen , Germany