Formal Verification of DEV&DESS Formalism Using Symbolic Model Checker HyTech

A hybrid system is a dynamical system reacting to continuous and discrete changes simultaneously. Many researchers have proposed modeling and verification formalisms for hybrid systems, but algorithmic verification of important properties such as safety and reachability is still an on-going research area. This paper demonstrates that a basic modeling formalism for hybrid systems, DEV&DESS is an easy-to-use input front-end of a formal verification tool, HyTech. HyTech is a symbolic model checker for liner hybrid automata, and we transformed an atomic DEV&DESS model into linear hybrid automata. We are now developing translation rules from DEV&DESS models, including a coupled DEV&DESS, into linear hybrid automata, through various case studies.