LocUsT: a tool for checking usage policies

We introduce LocUsT, a tool to statically check whether a given resource usage complies with a local policy. LocUsT takes as input an abstraction of the behaviour of a program, called a usage. Usages are expressed in a simple process calculus, and over-approximate all the resource accesses of the program itself. As additional input, LocUsT takes a policy that defines the allowed resource access patterns, represented through a finite state automaton parametrized over resources. Finally, LocUsT decides whether some trace of the given usage violates some instantiation of the policy