Verifying concurrent programs by memory unwinding


Tomasco, Ermenegildo, Inverso, Omar, Fischer, Bernd, La Torre, Salvatore and Parlato, Gennaro (2015) Verifying concurrent programs by memory unwinding At 21st International Conference on Tools and Algorithms for the Construction and Analysis of Systems (TACAS), United Kingdom. 11 - 18 Apr 2015. 15 pp.

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Description/Abstract

We describe a new sequentialization-based approach to the symbolic verification of multi-threaded programs with shared memory and dynamic thread creation. Its main novelty is the idea of memory unwinding, i.e., an explicit representation of the sequence of write operations into the shared memory. For the verification, we nondeterministically guess this unwinding and then simulate the behavior of the program according to any scheduling that respects this guess. This approach is complementary to other sequentializations and explores an orthogonal dimension, i.e., the number of write operations. It also simplifies the implementation of several important optimizations, in particular the targeted exposure of individual writes. We implemented this approach as code-to-code transformation from multi-threaded into nondeterministic sequential programs, which allows the reuse of sequential verification tools. Experiments show that our approach is very promising: it found all errors in the concurrency category of SV-COMP15.

Item Type: Conference or Workshop Item (Paper)
Venue - Dates: 21st International Conference on Tools and Algorithms for the Construction and Analysis of Systems (TACAS), United Kingdom, 2015-04-11 - 2015-04-18
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Organisations: Electronic & Software Systems
ePrint ID: 370322
Date :
Date Event
April 2015Published
Date Deposited: 21 Oct 2014 21:54
Last Modified: 10 Mar 2017 16:44
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/370322

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