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Erschienen in:
2010 | OriginalPaper | Buchkapitel
Natural Domain SMT: A Preliminary Assessment
verfasst von : Scott Cotton
Erschienen in: Formal Modeling and Analysis of Timed Systems
Verlag: Springer Berlin Heidelberg
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SMT solvers have traditionally been based on the DPLL(T) algorithm, where the driving force behind the procedure is a DPLL search over truth valuations. This traditional framework allows for a degree of modularity in the treatment of theory solvers. Over time, theory solvers have become more and more closely integrated into the DPLL process, and consequently less and less modular. In this paper, we present a DPLL-like algorithm for SMT solving in which the search takes place over the natural domain of the variables in the problem. As a case study, we analyze its application to continuous domain linear arithmetic, present implementation techniques and some experimentation with difference logic. Results indicate the method can sometimes outperform leading SMT solvers but that the method is not yet robust.