Extracting MUSes

  • Authors:
  • Éric Grégoire;Bertrand Mazure;Cédric Piette

  • Affiliations:
  • CRIL-CNRS & IRCICA, Universitéé d'Artois, rue Jean Souvraz SP18, F-62307 Lens Cedex France, E-mail: {gregoire,mazure,piette}@cril.univ-artois.fr;CRIL-CNRS & IRCICA, Universitéé d'Artois, rue Jean Souvraz SP18, F-62307 Lens Cedex France, E-mail: {gregoire,mazure,piette}@cril.univ-artois.fr;CRIL-CNRS & IRCICA, Universitéé d'Artois, rue Jean Souvraz SP18, F-62307 Lens Cedex France, E-mail: {gregoire,mazure,piette}@cril.univ-artois.fr

  • Venue:
  • Proceedings of the 2006 conference on ECAI 2006: 17th European Conference on Artificial Intelligence August 29 -- September 1, 2006, Riva del Garda, Italy
  • Year:
  • 2006

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Abstract

Minimally unsatisfiable subformulas (in short, MUSes) represent the smallest explanations for the inconsistency of SAT instances in terms of the number of involved clauses. Extracting MUSes can thus prove valuable because it circumscribes the sources of contradiction in an instance. In this paper, a new heuristic-based approach to approximate or compute MUSes is presented. It is shown that it often outperforms current competing ones.