An analysis of permutations in arrays

  • Authors:
  • Valentin Perrelle;Nicolas Halbwachs

  • Affiliations:
  • Vérimag, Grenoble University, France;Vérimag, Grenoble University, France

  • Venue:
  • VMCAI'10 Proceedings of the 11th international conference on Verification, Model Checking, and Abstract Interpretation
  • Year:
  • 2010

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Abstract

This paper is concerned with the synthesis of invariants in programs with arrays. More specifically, we consider properties concerning array contents up to a permutation. For instance, to prove a sorting procedure, one has to show that the result is sorted, but also that it is a permutation of the initial array. In order to analyze this kind of properties, we define an abstract interpretation working on multisets of values, and able to discover invariant equations about such multisets.