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Model Repair Revamped: On the Automated Synthesis of Markov Chains

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arxiv 2105.13411 v1 pith:GXRPHTXF submitted 2021-05-27 cs.PL

Model Repair Revamped: On the Automated Synthesis of Markov Chains

classification cs.PL
keywords synthesisprogramsabstractionautomatedcegarcegiscounterexample-guidedprobabilistic
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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This paper outlines two approaches|based on counterexample-guided abstraction refinement (CEGAR) and counterexample-guided inductive synthesis (CEGIS), respectively to the automated synthesis of finite-state probabilistic models and programs. Our CEGAR approach iteratively partitions the design space starting from an abstraction of this space and refines this by a light-weight analysis of verification results. The CEGIS technique exploits critical subsystems as counterexamples to prune all programs behaving incorrectly on that input. We show the applicability of these synthesis techniques to sketching of probabilistic programs, controller synthesis of POMDPs, and software product lines.

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