Abstraction-guided synthesis of synchronization

Abstract

We present a novel framework for automatic inference of efficient synchronization in concurrent programs, a task known to be difficult and error-prone when done manually. Our framework is based on abstract interpretation and can infer synchronization for infinite state programs. Given a program, a specification, and an abstraction, we infer synchronization that avoids all (abstract) interleavings that may violate the specification, but permits as many valid interleavings as possible. Combined with abstraction refinement, our framework can be viewed as a new approach for verification where both the program and the abstraction can be modified on-the-fly during the verification process. The ability to modify the program, and not only the abstraction, allows us to remove program interleavings not only when they are known to be invalid, but also when they cannot be verified using the given abstraction. We implemented a prototype of our approach using numerical abstractions and applied it to verify several example programs.

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Correspondence to Eran Yahav.

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E. Yahav is a Deloro Fellow. A preliminary version of this work appeared in the 37th Annual ACM SIGPLAN-SIGACT Symposium on Principles of Programming Languages.

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Vechev, M., Yahav, E. & Yorsh, G. Abstraction-guided synthesis of synchronization. Int J Softw Tools Technol Transfer 15, 413–431 (2013). https://doi.org/10.1007/s10009-012-0232-3

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Keywords

  • Concurrency
  • Verification
  • Synthesis
  • Abstract interpretation