An Operational Semantics for UML 2 Sequence Diagrams Supported by Model Transformations

In this paper, we propose an operational semantics for UML2SD (Unified Modeling Language 2 Sequence Diagrams) to its equivalent Büchi automaton. The objective of this paper is twofold; first we provide UML2SD with Büchi automaton formal semantics, and second we bridge the gap between theoretic studies to practical studies by improving model transformations. The approach is based on Algebraic graph transformation and uses AGG (Attribut Graph Grammar) tool. The rules of the graph grammars specifying transformation of basic interactions and combined fragments are based on the proposed semantics. A scenario of ATM (Automatic Teller Machine) as case study will illustrate our approach.