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- W3033481492 abstract "consistency is one of the most fundamental and widely used consistency models weaker than sequential consistency. In this paper, we study the verification of safety properties for finite-state concurrent programs running under a causally consistent shared memory model. We establish the decidability of this problem for a standard model of causal consistency (called also Causal Convergence and Strong-Release-Acquire). Our proof proceeds by developing an alternative operational semantics, based on the notion of a thread potential, that is equivalent to the existing declarative semantics and constitutes a well-structured transition system. In particular, our result allows for the verification of a large family of programs in the Release/Acquire fragment of C/C++11 (RA). Indeed, while verification under RA was recently shown to be undecidable for general programs, since RA coincides with the model we study here for write/write-race-free programs, the decidability of verification under RA for this widely used class of programs follows from our result. The novel operational semantics may also be of independent use in the investigation of weakly consistent shared memory models and their verification." @default.
- W3033481492 created "2020-06-12" @default.
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- W3033481492 date "2020-06-06" @default.
- W3033481492 modified "2023-10-12" @default.
- W3033481492 title "Decidable verification under a causally consistent shared memory" @default.
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- W3033481492 doi "https://doi.org/10.1145/3385412.3385966" @default.
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