Abstract
We define the class of single-parent heap systems, which rely on a singly-linked heap in order to model destructive updates on tree structures. This encoding has the advantage of relying on a relatively simple theory of linked lists in order to support abstraction computation. To facilitate the application of this encoding, we provide a program transformation that, given a program operating on a multi-linked heap without sharing, transforms it into one over a single-parent heap. It is then possible to apply shape analysis by predicate and ranking abstraction as in [3]. The technique has been successfully applied on examples with trees of fixed arity (balancing of and insertion into a binary sort tree).
This research was supported in part by ONR grant N00014-99-1-0131, and SRC grant 2004-TJ-1256.
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Balaban, I., Pnueli, A., Zuck, L.D. (2007). Shape Analysis of Single-Parent Heaps. In: Cook, B., Podelski, A. (eds) Verification, Model Checking, and Abstract Interpretation. VMCAI 2007. Lecture Notes in Computer Science, vol 4349. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-69738-1_7
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