Published in Volume XXIV, Issue 2, 2014, pages 217-252, doi: 10.7561/SACS.2014.2.217

Authors: J. Lei, Z. Qiu


The difficulties of verifying concurrent programs lie in their inherent non-determinism and interferences. Rely-Guarantee reasoning is one useful approach to solve this problem for its capability in formally specifying inter- thread interferences. However, modern verification requires better locality and modularity. It is still a great challenge to verify a message-passing program in a modular and composable way.

In this paper, we propose a new reasoning system for message-passing programs. It is a novel logic that supports Hoare style triples to specify and verify distributed programs modularly. We concretize the concept of event traces to represent interactions among distributed agents, and specify behav- iors of agents by their local traces with regard to environmental assumptions — an idea inspired by Rely-Guarantee reasoning. Based on trace semantics, the verification is compositional in both temporal and spatial dimensions. To show validity, we apply our logic to modularly prove several examples.

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  title={Rely-Guarantee Based Reasoning for Message-Passing Programs},
  author={J. Lei and Z. Qiu},
  journal={Scientific Annals of Computer Science},
  organization={``A.I. Cuza'' University, Iasi, Romania},
  publisher={``A.I. Cuza'' University Press}