Timed and Hybrid Automata in SAL

Various methodologies to model and analyze timed and hybrid systems using SAL are reported. We assume that the system is specified as a network of timed/hybrid automata with synchronized transitions and urgency. We show how to translate the system into a SAL model with the time domain being either discrete or dense, and the clocks being either saturated or unsaturated. Depending on these choices, various tools provided by SAL to model check reachability properties over the system are used to establish safety properties of timed systems. We profile the performance of these tools with a comparative study.