Assumption Generation for Software Component Verification
Proceedings of the 17th IEEE international conference on Automated software engineering
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Automatic synthesis of assumptions for compositional model checking
FORTE'06 Proceedings of the 26th IFIP WG 6.1 international conference on Formal Techniques for Networked and Distributed Systems
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The requirement synthesis tool RESY automatically computes environment assumptions for compositional model checking. Given a process M in a multi-process PROMELA program, an abstraction refinement loop computes a coarse equivalence relation on the states of the environment, collapsing two states if the environment of M can either force the occurrence of an error from both states or from neither state. RESY supports three different operation modes: assumption generation, compositional model checking, and front-end to the model checker SPIN. In assumption generation mode, RESY minimizes the size of the assumption; small assumptions are useful for program documentation and as certificates for re-verification. In compositional model checking mode, RESY terminates as soon as the property is proven or disproven, independently of the size of the assumption. In front-end mode, RESY terminates when the size of the assumption falls below a specified threshold, and calls SPIN with the simplified verification problem.