Reasoning about the correctness of software development process

Summary form only given. During the object-oriented software development process, a variety of models of the system is built. All these models are not independent, but they are related to each other. Elements in one model have trace dependencies to other models; they are semantically overlapping and together represent the system as a whole. It is necessary to have a precise definition of the syntax and semantics of the different models and their relationships, since the lack of accuracy in their definition can lead to wrong model interpretations and inconsistency between models. The paper considers the notion of formal contract regulating the activities in the software development process. It defines the concept of software process contract (sp-contract).