Verifying UML-based interaction using coloured Petri nets

Verification of an interaction design becomes very important in the system development. Meanwhile, UML, as a standard tool in the system development, is not able to provide a formal verification of the design directly. This paper provides an approach to verify the UML-based interaction by using CPN. The interaction is modelled using UML 2.0 sequence diagram. The verification focuses on identifying the reachability, deadlock, inconsistency, and user errors: initialisation error, order error, and post-completion error. This verification uses the CPN analysis techniques such as state space analysis, strongly-connected component graph, liveness properties and fairness properties. Using a case study of chocolate machine, the verification approach is applied.