A non-temporized approach for temporized analysis

Real-time critical systems require extensive analysis. The potentially considerable damage caused by failures of real-time critical systems justify the use of expensive verification techniques, such as timed reachability analysis. Unfortunately the cost of timed reachability analysis inhibits its systematic application at the early stages of development, when long verification sessions could slow down the development process. Moreover the large reachability space for proving temporal properties reduces the size of specification for which timed reachability analysis can be applied. The authors show how reachability analysis of the nontemporized underlying Petri net can reduce the size of timed reachability analysis. In this way, timed reachability analysis can be used for analyzing industrial-size safety critical systems, paying an acceptable overhead.