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Abstract. The paper presents a new tool for automated verification of Timed Automata as well as protocols written in the specification language Estelle. The current version offers an automatic translation from Estelle specifications to timed automata, and two complementary methods of reachability analysis. The first one is based on Bounded Model Checking (BMC), while the second one is an on-the-fly verification on an abstract model of the system.

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We present TECTLK, a logic to specify knowledge and real time in multi-agent systems. We show that the TECTLK model checking problem is decidable, and we present an algorithm for bounded model checking based on a discretisation method. We exemplify the use of the technique by means of the "Railroad Crossing System", a popular example in the multi-agent systems literature.