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Many real-life critical systems are described with large models and exhibit both probabilistic and non-deterministic behaviour. Verification of such systems requires techniques to avoid the state space explosion problem. Symbolic model checking and compositional verification such as assume-guarantee reasoning are two promising techniques to overcome this barrier. In this paper, we propose a probabilistic...
For many complex systems, it is important to verify formally their correctness; the aim is to guarantee the reliability and the correctness of such systems before their effective deployment. Several methods have been proposed to this effect using different formal tools such as Probabilistic Automata (PA). In this paper we focus on verification of service-based inter-organizational workflow (IOWF)...
Service-based Inter-Organizational Workflow (IOWF) processes support collaboration and cooperation of workflow (WF) processes attached to several partners. Guarantee the reliability and the correctness of IOWF is a very important need. In this paper, we propose an approach for formal modelling and verification of IOWF process models, described in BPEL4WS. IOWFs are modelled by means of Probabilistic...
Most distributed model-checking algorithms use global hash functions to partition state space. This creates load imbalance between computation processors. In this paper, we focus on the use of processor virtualization for parallelizing the state space construction algorithm. Our aim is to optimize the distributed model checking process by using load balancing techniques. We study the effectiveness...
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