A Generalized Commitment Machine for 2CL Protocols and its Prolog Implementation

In practical contexts where protocols model business interactions (e.g. trading, banking), designers need tools allowing them to analyse the impact on the possible interactions of regulations, preferences, conventions and the like. This work faces the issue of how to equip commitment protocols with formal and practical instruments aimed at supporting such an analysis by identifying the possible risks of violation and, thus, enabling the definition of operational strategies aimed at reducing risks of violation. Specifically, we present an operational semantics for the commitment protocol language 2CL as well as a tool for visualizing as a graph the possible interactions, labelling the states of the interaction so as to highlight legal situations and violations.