Spread the Work: Multi-threaded Safety Analysis for Hybrid Systems

We consider a method for the bounded safety analysis of hybrid systems, whose continuous behaviour is intertwined with discrete execution steps. The method computes a tree of state sets, which together over-approximate reachability by bounded-length executions. If none of the state sets intersects with a given set of unsafe states then we have proven bounded safety. Otherwise, we iteratively repeat parts of the computations with locally refined search parameters, in order to reduce the over-approximation error.