Mocha is a model checker based on the theme of exploiting design modularity: instead of manipulating unstructured state-transition graphs, it supports the hierarchical modeling fra...
Rajeev Alur, Luca de Alfaro, Radu Grosu, Thomas A....
In order to check whether an open system satisfies a desired property, we need to check the behavior of the system with respect to an arbitrary environment. In the most general se...
We study (collapsible) higher-order pushdown systems -- theoretically robust and well-studied models of higher-order programs -- along with their natural subclass called (collapsi...
Access-control policies have grown from simple matrices to non-trivial specifications written in sophisticated languages. The increasing complexity of these policies demands corres...
Daniel J. Dougherty, Kathi Fisler, Shriram Krishna...
We address the problem of alternating simulation refinement for concurrent timed games (TG). We show that checking timed alternating simulation between TG is EXPTIME-complete, and...