A proof based approach for formal verification of transactional BPEL web services
ABZ'10 Proceedings of the Second international conference on Abstract State Machines, Alloy, B and Z
Design of a BPEL verification tool
WS-FM'11 Proceedings of the 8th international conference on Web Services and Formal Methods
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The Web Services composition defines a processthat involves various independent Web Services to performa complex function. This process is described with a standardlanguage (BPEL) and executed by tools supporting thislanguage. This kind of languages describes the behavior ofdifferent distributed services together, but it does not supportthe verification nor the validation of behavioral requirements.In our work, we are interested in the formal validation ofWeb Services composition. Formal models are extracted fromBPEL specifications and checked. Most previous work is basedon Web Services composition formalizations using Petri nets,process algebra or transition systems. The model checkingtechnique is set-up to validate such descriptions.In this paper, we present a proof and refinement basedapproach for the formal representation, verification and validation of Web Services compositions using the Event B method.