Formal Verification of Websites

In this paper a model for web sites is presented. The model is well-suited for the formal verification of dynamic as well as static properties of the system. A web site is defined as a collection of web pages which are semantically connected in some way. External web pages (which are related pages not belonging to the web site) are treated as the environment of the system. We also present the logic which is used to specify properties of web sites, and illustrate the kinds of properties that can be specified and verified by using a model-checking tool. In this setting, we discuss some interesting properties which often need to be checked when designing web sites. We have encoded the model using the specification language Maude which allows us to use the Maude modelchecking tool.