Loop Summarization using Abstract Transformers

TitleLoop Summarization using Abstract Transformers
Publication TypeConference Paper
Year of Publication2008
AuthorsKroening, D., Sharygina Natasha, Tonetta S., Tsitovich A., and Wintersteiger C.M.
Conference Name6th International Symposium on Automated Technology for Verification and Analysis (ATVA)
PublisherSpringer, Volume 5311
Conference LocationSeoul, South Korea

Existing program analysis tools that implement abstraction rely on saturating procedures to compute over-approximations of fixpoints. As an alternative, we propose a new algorithm to compute an over-approximation of the set of reachable states of a program by replacing loops in the control flow graph by their abstract transformer. Our technique is able to generate diagnostic information in case of property violations, which we call leaping counterexamples. We have implemented this technique and report experimental results on a set of large ANSI-C programs using abstract domains that focus on properties related to string-buffers.

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