There is a trend nowadays towards bigger and more complex systems concerning their parts and interconnectivity. In such scenario, modeling structure, overall organization and interaction have become a main concern, as well as fulfillment of mission critical requirements. The scope of our work encompasses Software Engineering related subjects such as Software Architecture, Modeling Techniques and more formal disciplines like Model Checking, Modal Logics and Process Algebra. Although inspired by such techniques, there is, indeed a methodological orientation in our work, traversing the boundaries of Software Engineering with Formal Methods, through which we seek to investigate and establish a systematic way for the effective utilization of formal methods in the first steps of software development. Still, more specifically, we show how it is possible, starting from models based on architectural abstractions, to systematically produce a formal model upon which we can execute certain forms of behavior analysis. Our proposal includes a basic notational system to express architectural models along with their formal semantics and a prototype built to support specification and formal analysis tasks oriented by architectural abstractions. With this, we intend to stress some essential aspects of a development methodology which aims to integrate tools and formal techniques to software modeling.