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String Constraints for Verification
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
Uppsala University, Disciplinary Domain of Science and Technology, Mathematics and Computer Science, Department of Information Technology, Computer Systems.
Institute of Information Science, Academia Sinica .
Brno University.
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2014 (English)In: Computer Aided Verification - 26th International Conference, {CAV} 2014, Held as Part of the Vienna Summer of Logic, {VSL} 2014, Vienna, Austria, July 18-22, 2014. Proceedings, Springer, 2014, p. 150-166Conference paper, Published paper (Refereed)
Abstract [en]

We present a decision procedure for a logic that combines (i) word equations over string variables denoting words of arbitrary lengths, together with (ii) constraints on the length of words, and on (iii) the regular languages to which words belong. Decidability of this general logic is still open. Our procedure is sound for the general logic, and a decision procedure for a particularly rich fragment that restricts the form in which word equations are written. In contrast to many existing procedures, our method does not make assumptions about the maximum length of words. We have developed a prototypical implementation of our decision procedure, and integrated it into a CEGAR-based model checker for the analysis of programs encoded as Horn clauses. Our tool is able to automatically establish the correctness of several programs that are beyond the reach of existing methods.

Place, publisher, year, edition, pages
Springer, 2014. p. 150-166
Keywords [en]
String Solver
National Category
Computer Systems
Research subject
Computer Science
Identifiers
URN: urn:nbn:se:uu:diva-238131DOI: 10.1007/978-3-319-08867-9ISBN: 978-3-319-08866-2 (print)OAI: oai:DiVA.org:uu-238131DiVA, id: diva2:770095
Conference
CAV'14
Projects
UPMARCAvailable from: 2014-12-09 Created: 2014-12-09 Last updated: 2014-12-17

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Abdulla, Parosh AzizAtig, Mohamed FaouziRümmer, Philipp

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