VIRAS: Conflict-Driven Quantifier Elimination for Integer-Real Arithmetic (Extended Version)

EasyChair Preprint 13150, version 1

Abstract

We introduce Virtual Integer-Real Arithmetic Substitution (Viras), a quantifier elimination procedure for deciding quantified linear mixed integer-real arithmetic problems. Viras combines the framework of virtual substitutions with conflict-driven proof search and linear integer arithmetic reasoning based on Cooper’s method. We demonstrate that Viras gives an exponential speedup over state-of-the-art methods in quantified arithmetic reasoning, proving problems that SMT-based techniques fail to solve.

Keyphrases: Descision Procedure, LIA, LIRA, LRA, Presburger arithmetic, SMT, automated reasoning, linear arithmetic, logic, quantifier elimination

@booklet{EasyChair:13150,
  author    = {Johannes Schoisswohl and Laura Kovács and Konstantin Korovin},
  title     = {VIRAS: Conflict-Driven Quantifier Elimination for Integer-Real Arithmetic (Extended Version)},
  howpublished = {EasyChair Preprint 13150},
  year      = {EasyChair, 2024}}