Verification by behaviour abstraction

As shown above, verification of temporal properties on behaviour abstractions is suitable for detecting service interactions. In the example that we briefly explained the abstraction step was not really necessary, for the example itself is small enough to check temporal properties directly on the behaviour.A complete analysis of the BCSM model already leads to a behaviour representation having several thousand states. Including services, we expect several tenthousand states. This reaches an order of magnitude of the number of states that makes abstraction techniques absolutely necessary. Here, even the analysis of the specification can become difficult with respect to complexity. Hence, a compositional analysis technique of specifications that allows to compute a representation of an abstract behaviour without exhaustive construction of the complete state space is currently developed [Och95]. We expect that our approach will allow us to check several combinations of services for undesired interactions where any direct verification approach without abstractions would be intractable.