Modeling for change via component-based decomposition and ASM refinement

This paper is part of a larger effort to concretely compare different approaches to modelling and implementing software intensive systems, in particular Business Processes (BPs). We illustrate for the Atm case study [3] how to use the Abstract State Machines Method [10] to develop executable models by a) first defining a high-level (easily changeable and reusable) model that can be checked by the domain expert to capture the requirements and b) then refining this model to executable code which the software expert can check to behave correctly with respect to the requirements model.