Automatic generation of PROMELA code from sequence diagram with imbricate combined fragments

Formal verification of UML diagram is the act of proving or disproving the correctness of intended algorithms underlying a system with respect to a certain formal specification or property, using formal methods of mathematics. The most widely used techniques for system or software verification are: simulation and testing, deductive verification and Model checking. Model checking is a formal verification technique, in which an abstract model of a system is testing automatically to verify whether this model meets a given specification. SPIN Model checker is a popular open-source software tool used for the formal verification of distributed software systems. This article proposes a method for converting UML sequence diagrams with imbricate combined fragment automatically to PROMELA code to simulate the execution and to verify properties written in Linear Temporal Logic (LTL) with SPIN Model checker.