Subtropical Satisfiability - Inria - Institut national de recherche en sciences et technologies du numérique Access content directly
Conference Papers Year : 2017

Subtropical Satisfiability


Quantifier-free nonlinear arithmetic (QF NRA) appears in many applications of satisfiability modulo theories solving (SMT). Accordingly, efficient reasoning for corresponding constraints in SMT theory solvers is highly relevant. We propose a new incomplete but efficient and terminating method to identify satisfiable instances. The method is derived from the subtropical method recently introduced in the context of symbolic computation for computing real zeros of single very large multivariate polynomials. Our method takes as input conjunctions of strict polynomial inequalities, which represent more than 40% of the QF NRA section of the SMT-LIB library of benchmarks. The method takes an abstraction of polynomials as exponent vectors over the natural numbers tagged with the signs of the corresponding coefficients. It then uses, in turn, SMT to solve linear problems over the reals to heuristi-cally find suitable points that translate back to satisfying points for the original problem. Systematic experiments on the SMT-LIB demonstrate that our method is not a sufficiently strong decision procedure by itself but a valuable heuristic to use within a portfolio of techniques.
Fichier principal
Vignette du fichier
10.1007-978-3-319-66167-4_11.pdf (570.56 Ko) Télécharger le fichier
Origin : Explicit agreement for this submission

Dates and versions

hal-01590899 , version 1 (20-09-2017)
hal-01590899 , version 2 (30-11-2017)



Pascal Fontaine, Mizuhito Ogawa, Thomas Sturm, Xuan Vu. Subtropical Satisfiability. FroCoS 2017 - 11th International Symposium on Frontiers of Combining Systems, Sep 2017, Brasilia, Brazil. ⟨10.1007/978-3-319-66167-4⟩. ⟨hal-01590899v2⟩
554 View
178 Download



Gmail Facebook X LinkedIn More