2014 International SPIN Symposium on Model Checking of Software (SPIN), July 21–23, 2014, San Jose, CA, USA

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Constraint-Based Analysis
Santa Clara Room, Chair: Franjo Ivancic
CTL+FO Verification as Constraint Solving
Tewodros A. Beyene, Marc Brockschmidt, and Andrey Rybalchenko
(TU München, Germany; Microsoft Research, UK)
Publisher's Version
Abstract: Expressing program correctness often requires relating program data throughout (different branches of) an execution. Such properties can be represented using CTL+FO, a logic that allows mixing temporal and first-order quantification. Verifying that a program satisfies a CTL+FO property is a challenging problem that requires both temporal and data reasoning. Temporal quantifiers require discovery of invariants and ranking functions, while first-order quantifiers demand instantiation techniques. In this paper, we present a constraint-based method for proving CTL+FO properties automatically. Our method makes the interplay between the temporal and first-order quantification explicit in a constraint encoding that combines recursion and existential quantification. By integrating this constraint encoding with an off-the-shelf solver we obtain an automatic verifier for CTL+FO.


Time stamp: 2019-07-19T12:49:38+02:00