Verification of Data-Aware Processes via Array-Based Systems (Extended Version) [article]

Diego Calvanese, Silvio Ghilardi, Alessandro Gianola, Marco Montali, Andrey Rivkin
<span title="2019-02-27">2019</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
We study verification over a general model of artifact-centric systems, to assess (parameterized) safety properties irrespectively of the initial database instance. We view such artifact systems as array-based systems, which allows us to check safety by adapting backward reachability, establishing for the first time a correspondence with model checking based on Satisfiability-Modulo-Theories (SMT). To do so, we make use of the model-theoretic machinery of model completion, which surprisingly
more &raquo; ... ns out to be an effective tool for verification of relational systems, and represents the main original contribution of this paper. In this way, we pursue a twofold purpose. On the one hand, we reconstruct (restricted to safety) the essence of some important decidability results obtained in the literature for artifact-centric systems, and we devise a genuinely novel class of decidable cases. On the other, we are able to exploit SMT technology in implementations, building on the well-known MCMT model checker for array-based systems, and extending it to make all our foundational results fully operational.
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="">arXiv:1806.11459v2</a> <a target="_blank" rel="external noopener" href="">fatcat:j3iv2rnwuvbpzdp6mnlcfie2mq</a> </span>
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