Process calculi, from theory to practice: Verification tools

We present here two software tools, Auto and Autograph. Both originated directly from the basic theory of process calculi. Both were experimented on well-known problems to enhance their accordance to users expectations.Auto is a verification tool for process terms with finite automata representation. It computes minimal normal forms along a variety of user parameterized semantics, including some taking into account partial observation and abstraction. It checks for bisimulation equivalence (on the normal forms), and allows powerful diagnostics methods in case of failure.Autograph is a graphical, non syntactic system for manipulation of process algebraic terms as intuitively appealing drawings. It allows graphical editing by the user, but also visual support for display of information recovered from analysis with Auto.