Combining Formal Techniques and Prototyping in User Interface Construction and Verification

In this paper we investigate a component-based approach to combining formal techniques and prototyping for user interface construction in which a single speciication is used for constructing both implementations (prototypes) for experimentation and models for formal reasoning. Using a component-based approach not only allows us to construct realistic prototypes , but also allows us to generate a variety of formal models. Rapid prototyping allows the designs to be tested with end users and modiied based on their comments and performance, while formal modeling permits the designer to verify mechanically speciic requirements imposed on the user interface such as those found in safety-or security-critical applications.