Environment Model based Requirements Consistency Verification: An Example

Abstract

Nowadays formal methods have shown their ability in the requirements consistency verification, at least for safety-critical systems. But most requirements verification researches only focus on software requirements specification, without considering the software’s interactive environment. In this paper, we propose the environmental properties should be included into the specification verification. They should be considered as inherent constraints that must be satisfied. We extract environmental property constraints from interactive scenarios and state transitions of the environment entities, and transform them into formal models for verification. We use a running example to illustrate the role of environment models in requirements verification.