Constructing graph models for software system development and analysis

We propose a concept for creating the instrumentation for functional and structural decisions rationale during the software system (SS) development. We propose to develop SS simultaneously on two models – functional (FM) and structural (SM). FM is a source code of the SS. Adequate representation of the FM in the form of a graph model (GM) is made automatically and called SM. The problem of creating and visualizing GM is considered from the point of applying it as a uniform platform for the adequate representation of the SS source code. We propose three levels of GM detailing: GM1 – for visual analysis of the source code and for SS version control, GM2 – for resources optimization and analysis of connections between SS components, GM3 – for analysis of the SS functioning in dynamics. The paper includes examples of constructing all levels of GM