MiniMaxSAT: a new weighted Max-SAT solver

  • Authors:
  • Federico Heras;Javier Larrosa;Albert Oliveras

  • Affiliations:
  • Universitat Politecnica de Catalunya, Barcelona, Spain;Universitat Politecnica de Catalunya, Barcelona, Spain;Universitat Politecnica de Catalunya, Barcelona, Spain

  • Venue:
  • SAT'07 Proceedings of the 10th international conference on Theory and applications of satisfiability testing
  • Year:
  • 2007

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Abstract

In this paper we introduce MINIMAXSAT, a new Max-SAT solver that incorporates the best SAT and Max-SAT techniques. It can handle hard clauses (clauses of mandatory satisfaction as in SAT), soft clauses (clauses whose falsification is penalized by a cost as in Max-SAT) as well as pseudo-boolean objective functions and constraints. Its main features are: learning and backjumping on hard clauses; resolution-based and subtraction-based lower bounding; and lazy propagation with the two-watched literals scheme. Our empirical evaluation on a wide set of optimization benchmarks indicates that its performance is usually close to the best specialized alternative and, in some cases, even better.