ECDAR: An Environment for Compositional Design and Analysis of Real Time Systems

Abstract. We present Ecdar a new tool for compositional design and verification of real time systems. In Ecdar, a component interface de-scribes both the behavior of the component and the component’s assump-tions about the environment. The tool supports the important operations of a good compositional reasoning theory: composition, conjunction, quo-tient, consistency/satisfaction checking, and refinement. The operators can be used to combine basic models into larger specifications to con-struct comprehensive system descriptions from basic requirements. Algo-rithms to perform these operations have been based on a game theoretical setting that permits, for example, to capture the real-time constraints on communication events between components. The compositional ap-proach allows for scalability in the verification.

Quantitative Modal Transition Systems

International audienceThis extended abstract offers a brief survey presentation of the specification formalism of modal transition systems and its recent extensions to the quantitative setting of timed as well as stochastic systems. Some applications will also be briefly mentioned