cmMUS: A Tool for Circumscription-Based MUS Membership Testing

  • Mikoláš Janota
  • Joao Marques-Silva
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6645)

Abstract

This article presents cmMUS—a tool for deciding whether a clause belongs to some minimal unsatisfiable subset (MUS) of a given formula. While MUS-membership has a number of practical applications, related with understanding the causes of unsatisfiability, it is computationally challenging—it is \(\Sigma_2^P\)-complete. The presented tool cmMUS solves the problem by translating it to propositional circumscription, a well-known problem from the area of non-monotonic reasoning. The tool constantly outperforms other approaches to the problem, which is demonstrated on a variety of benchmarks.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2011

Authors and Affiliations

  • Mikoláš Janota
    • 2
  • Joao Marques-Silva
    • 1
    • 2
  1. 1.University CollegeDublinIreland
  2. 2.INESC-IDLisbonPortugal

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