Abstract
This paper proposes a new algorithm for computing path representatives in the concolic software verification tool ExpliSAT. A path representative is a useful technique for reducing the number of calls to a decision procedure by maintaining an explicit instantiation of symbolic variables that matches the current control flow path. In the current implementation in ExpliSAT, the whole representative is guessed at the beginning of an execution and then recomputed if it does not match the currently traversed control flow path. In this paper we suggest a new algorithm for computation of a representative, where the instantiation is done “on demand”, that is, only when a specific value is required in order to determine feasibility. Experimental results show that using representatives improves performance.
This work is partially supported by the European Community under the call FP7-ICT-2009-5 – project PINCETTE 257647.
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Chockler, H., Pidan, D., Ruah, S. (2013). Improving Representative Computation in ExpliSAT. In: Bertacco, V., Legay, A. (eds) Hardware and Software: Verification and Testing. HVC 2013. Lecture Notes in Computer Science, vol 8244. Springer, Cham. https://doi.org/10.1007/978-3-319-03077-7_24
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DOI: https://doi.org/10.1007/978-3-319-03077-7_24
Publisher Name: Springer, Cham
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