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Compositional Shape Analysis by means of Bi-Abduction (2009)
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@MISC{Calcagno09compositionalshape,
author = {Cristiano Calcagno and Dino Distefano and Peter O'Hearn and Hongseok Yang},
title = {Compositional Shape Analysis by means of Bi-Abduction},
year = {2009}
}
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Abstract
This paper describes a compositional shape analysis, where each procedure is analyzed independently of its callers. The analysis uses an abstract domain based on a restricted fragment of separation logic, and assigns a collection of Hoare triples to each procedure; the triples provide an over-approximation of data structure usage. Compositionality brings its usual benefits – increased potential to scale, ability to deal with unknown calling contexts, graceful way to deal with imprecision – to shape analysis, for the first time. The analysis rests on a generalized form of abduction (inference of explanatory hypotheses) which we call bi-abduction. Biabduction displays abduction as a kind of inverse to the frame problem: it jointly infers anti-frames (missing portions of state) and frames (portions of state not touched by an operation), and is the basis of a new interprocedural analysis algorithm. We have implemented
