Abstract
Predictive analysis aims at detecting concurrency errors during runtime by monitoring a concrete execution trace of a concurrent program. In recent years, various models based on happens-before causality relations have been proposed for predictive analysis to improve the interleaving coverage while ensuring the absence of false alarms. However, these models are based on only the observed events, and typically do not utilize source code. Furthermore, the enumerative algorithms they use for verifying safety properties in the predicted execution traces often suffer from the interleaving explosion problem. In this paper, we introduce a new symbolic causal model based on source code and the observed events, and propose a symbolic algorithm to check whether a safety property holds in all feasible permutations of events in the given execution trace. Rather than explicitly enumerating the interleavings, our algorithm conducts the verification using a novel encoding of the causal model and symbolic reasoning with a satisfiability modulo theory (SMT) solver. Our algorithm has a larger interleaving coverage than known causal models in the literature. We also propose a method to symbolically bound the number of context switches allowed in an interleaving, to further improve the scalability of the algorithm.
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Wang, C., Kundu, S., Ganai, M., Gupta, A. (2009). Symbolic Predictive Analysis for Concurrent Programs. In: Cavalcanti, A., Dams, D.R. (eds) FM 2009: Formal Methods. FM 2009. Lecture Notes in Computer Science, vol 5850. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-05089-3_17
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DOI: https://doi.org/10.1007/978-3-642-05089-3_17
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