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Model finding for recursive functions in SMT. (English) Zbl 06623258
Olivetti, Nicola (ed.) et al., Automated reasoning. 8th international joint conference, IJCAR 2016, Coimbra, Portugal, June 27 – July 2, 2016. Proceedings. Cham: Springer (ISBN 978-3-319-40228-4/pbk; 978-3-319-40229-1/ebook). Lecture Notes in Computer Science 9706. Lecture Notes in Artificial Intelligence, 133-151 (2016).
Summary: SMT solvers have recently been extended with techniques for finding models of universally quantified formulas in some restricted fragments of first-order logic. This paper introduces a translation that reduces axioms specifying a large class of recursive functions, including terminating functions, to universally quantified formulas for which these techniques are applicable. An evaluation confirms that the approach improves the performance of existing solvers on benchmarks from three sources. The translation is implemented as a preprocessor in the CVC4 solver and in a new higher-order model finder called Nunchaku.
For the entire collection see [Zbl 1337.68016].

MSC:
68T15 Theorem proving (deduction, resolution, etc.) (MSC2010)
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