A formal verification approach of conversations in compostie Web services

Web service composition is nowadays a very focused-on topic of research by academic and industrial research groups. This thesis discusses the design and verification of behaviors of composite web services. To model composite web services, two behaviors are proposed, namely control and operational. The operational behavior shows the business logic of the process functionality for a composite web service. The control behavior shows the constraints that the operational behavior should satisfy and specifies the states that this behavior should be in. The idea behind this separation is to promote the design, verification and reusability of web services in composite settings. To guarantee their compatibility, these two behaviors communicate and synchronize through conversation messages. State charts are used to model composite web services and symbolic model checking with NuSMV model checker is used to verify their conversations. The properties to be verified are expressed in two logics: Linear Temporal Logic (LTL) and Computation Tree Logic (CTL). A Java-based translation procedure from the design model to SMV program used by NuSMV has been developed and tested in two case studie

A formal verification approach of conversations in composite web services using NuSMV

Web service composition is currently a very focused-on topic of research, with many studies being proposed by academic and industrial research groups. This paper discusses the design and verification of behavior of composite Web services. We model composite Web services based on two behaviors, namely control and operational. These behaviors communicate through conversation messages. We use state charts to model composite Web services and verify the synchronization of the conversations among them using symbolic model checking with NuSMV. © 2009 IOS Press. All rights reserved

Symbolic model checking composite Web services using operational and control behaviors

This paper addresses the issue of verifying if composite Web services design meets some desirable properties in terms of deadlock freedom, safety (something bad never happens), and reachability (something good will eventually happen). Composite Web services are modeled based on a separation of concerns between business and control aspects of Web services. This separation is achieved through the design of an operational behavior, which defines the composition functioning according to the Web services\u27 business logic, and a control behavior, which identifies the valid sequences of actions that the operational behavior should follow. These two behaviors are formally defined using automata-based techniques. The proposed approach is model checking-based where the operational behavior is the model to be checked against properties defined in the control behavior. The paper proves that the proposed technique allows checking the soundness and completeness of the design model with respect to the operational and control behaviors. Moreover, automatic translation procedures from the design models to the NuSMV model checker\u27s code and a verification tool are reported in the paper. © 2012 Elsevier Ltd. All rights reserved

SoMeT - A Formal Verification Approach of Conversations in Composite Web Services Using NuSMV

Web service composition is currently a very focused-on topic of research, with many studies being proposed by academic and industrial research groups. This paper discusses the design and verification of behavior of composite Web services. We model composite Web services based on two behaviors, namely control and operational. These behaviors communicate through conversation messages. We use state charts to model composite Web services and verify the synchronization of the conversations among them using symbolic model checking with NuSMV