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SMT-Based Answer Set Solver CMODELS(DIFF) (System Description)

Authors Da Shen, Yuliya Lierler

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Author Details

Da Shen
  • Department of Computer Science, University of Nebraska at Omaha, South 67th Street, Omaha, NE 68182, USA
Yuliya Lierler
  • Department of Computer Science, University of Nebraska at Omaha, South 67th Street, Omaha, NE 68182, USA

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Da Shen and Yuliya Lierler. SMT-Based Answer Set Solver CMODELS(DIFF) (System Description). In Technical Communications of the 34th International Conference on Logic Programming (ICLP 2018). Open Access Series in Informatics (OASIcs), Volume 64, pp. 11:1-11:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2018) https://doi.org/10.4230/OASIcs.ICLP.2018.11

Abstract

Many answer set solvers utilize Satisfiability solvers for search. Satisfiability Modulo Theory solvers extend Satisfiability solvers. This paper presents the CMODELS(DIFF) system that uses Satisfiability Modulo Theory solvers to find answer sets of a logic program. Its theoretical foundation is based on Niemala's characterization of answer sets of a logic program via so called level rankings. The comparative experimental analysis demonstrates that CMODELS(DIFF) is a viable answer set solver.

Subject Classification

ACM Subject Classification
  • Computing methodologies → Logic programming and answer set programming
  • Software and its engineering → Constraint and logic languages
  • Theory of computation → Constraint and logic programming
Keywords
  • answer set programming
  • satisfiability modulo theories
  • constraint satisfaction processing

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