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Probabilistic Program Verification via Inductive Synthesis of Inductive Invariants

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arxiv 2205.06152 v2 pith:HG7AAC4A submitted 2022-05-12 cs.LO

Probabilistic Program Verification via Inductive Synthesis of Inductive Invariants

classification cs.LO
keywords inductiveexpectedinvariantsprobabilisticsynthesisprogramsprovingruntime
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Essential tasks for the verification of probabilistic programs include bounding expected outcomes and proving termination in finite expected runtime. We contribute a simple yet effective inductive synthesis approach for proving such quantitative reachability properties by generating inductive invariants on source-code level. Our implementation shows promise: It finds invariants for (in)finite-state programs, can beat state-of-the-art probabilistic model checkers, and is competitive with modern tools dedicated to invariant synthesis and expected runtime reasoning.

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