Abstract
We study the verification problem for e-service (and workflow) specifications, aiming at efficient techniques for guiding the construction of composite e-services to guarantee desired properties (e.g., deadlock avoidance, bounds on resource usage, response times). Based on e-service frameworks such as AZTEC and e-FLow, decision flow language Vortex, we introduce a very simple e-service model for our investigation of verification issues. We first show how three different model checking techniques are applied when the number of processes is limited to a predetermined number. We then introducepid quantified constraint, a new symbolic representation that can encode infinite many system states, to verify systems with unbounded and dynamic process instantiations. We think that it is a versatile technique and more suitable for verification of e-service specifications. If this is combined with other techniques such as abstraction and widening, it is possible to solve a large category of interesting verification problems for e-services.
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Fu, X., Bultan, T., Su, J. (2002). Formal Verification of e-Services and Workflows. In: Bussler, C., Hull, R., McIlraith, S., Orlowska, M.E., Pernici, B., Yang, J. (eds) Web Services, E-Business, and the Semantic Web. WES 2002. Lecture Notes in Computer Science, vol 2512. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-36189-8_15
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