An Experimentation Framework for Specification and Verification of Web Services

Designing and implementing Web Services constitutes a large and constantly growing part of the information technology market. Web Services have specific scenarios in which distributed processes and network resources are used. This aspect of services requires integration with the model checkers. This article presents the experimentation framework in which services can be specified and then formally analyzed for deadlock-freedom, achievement of process goals, and similar features. Rybu4WS language enriches the basic Rybu language with the ability to use variables in processes, service calls between servers, new structural instructions, and other constructions known to programmers while remaining in line with declarative, mathematical IMDS formalism. Additionally, the development environment allows simulation of a counterexample or a witness - obtained as a result of the model checking - in a similar way to traditional debuggers.