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Preprints, Working Papers, ... Year : 2015

Synthesizing Short-Circuiting Validation of Data Structure Invariants

Abstract

This paper presents incremental verification-validation, a novel approach for checking rich data structure invariants expressed as separation logic assertions. Incremental verification-validation combines static verification of separation properties with efficient, short-circuiting dynamic validation of arbitrarily rich data constraints. A data structure invariant checker is an inductive predicate in separation logic with an executable interpretation; a short-circuiting checker is an invariant checker that stops checking whenever it detects at run time that an assertion for some sub-structure has been fully proven statically. At a high level, our approach does two things: it statically proves the separation properties of data structure invariants using a static shape analysis in a standard way but then leverages this proof in a novel manner to synthesize short-circuiting dynamic validation of the data properties. As a consequence, we enable dynamic validation to make up for imprecision in sound static analysis while simultaneously leveraging the static verification to make the remaining dynamic validation efficient. We show empirically that short-circuiting can yield asymptotic improvements in dynamic validation, with low overhead over no validation, even in cases where static verification is incomplete.

Dates and versions

hal-01256324 , version 1 (14-01-2016)

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Yi-Fan Tsai, Devin Coughlin, Bor-Yuh Evan Chang, Xavier Rival. Synthesizing Short-Circuiting Validation of Data Structure Invariants. 2015. ⟨hal-01256324⟩
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