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Enhancing Predicate Pairing with Abstraction for Relational Verification | | Emanuele De Angelis
; Fabio Fioravanti
; Alberto Pettorossi
; Maurizio Proietti
; | | Date: |
14 Sep 2017 | | Abstract: | Relational verification is a technique that aims at proving properties that
relate two different program fragments, or two different program runs. It has
been shown that constrained Horn clauses (CHCs) can effectively be used for
relational verification by applying a CHC transformation, called predicate
pairing, which allows the CHC solver to infer relations among arguments of
different predicates. In this paper we study how the effects of the predicate
pairing transformation can be enhanced by using various abstract domains based
on linear arithmetic (i.e., the domain of convex polyhedra and some of its
subdomains) during the transformation. After presenting an algorithm for
predicate pairing with abstraction, we report on the experiments we have
performed on over a hundred relational verification problems by using various
abstract domains. The experiments have been performed by using the VeriMAP
transformation and verification system, together with the Parma Polyhedra
Library (PPL) and the Z3 solver for CHCs. | | Source: | arXiv, 1709.4809 | | Services: | Forum | Review | PDF | Favorites | |
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