Dr. Josef Tapken

 

1 Publications (with abstracts)

[DT03]

H. Dierks and J. Tapken. Moby/DC - A tool for model-checking parametric real-time specifications. In H. Garavel and J. Hatcliff, editors, Tools and Algorithms for the Construction and Analysis of Systems (TACAS 2003), volume 2619 of LNCS, pages 271-277. Springer, 2003.
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We define an operational subset of Duration Calculus, called phase automata, which serves as an intermediate language for the analysis and verification of real-time system descriptions that contain timing parameters. We introduce the tool Moby/DC which implements a model-checking algorithm for phase automata. The algorithm applies compositional model-checking techniques and handles parameters by built-in procedures or by a link to CLP(R). Due to the parameters the model-checking problem is undecidable in general. Hence, we have to accept that the results are overapproximations only in order to guarantee termination. The overapproximation together with the compositional technique makes the model-checker especially well suited for proving the absence of error traces instead of finding them.

[DT01]

H. Dierks and J. Tapken. Moby/PLC: Eine graphische Entwicklungsumgebung für SPS-Programme. at-Automatisierungstechnik, 1:38-44, 2001.
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[DT00]

H. Dierks and J. Tapken. Modelling and Verifying of `Cash-Point Service' Using Moby/PLC. Formal Aspects of Computing, 12:222-221, 2000.
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[Tap99]

Josef Tapken. Implementing Hierarchical Graph-Structures. In J.-P. Finance, editor, Proceedings of FASE'99, volume 1577 of LNCS, pages 219-233. Springer-Verlag, 1999. (c) Springer-Verlag. This publication is available here and at Springer.
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[Tap98]

J. Tapken. Moby/PLC - A Design Tool for Hierarchical Real-Time Automata. In E. Astesiano, editor, Proceedings of FASE'98, volume 1382 of LNCS, pages 326-329. Springer Verlag, 1998.
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[TD98]

J. Tapken and H. Dierks. Moby/PLC - Graphical Development of PLC-Automata. In A.P. Ravn and H. Rischel, editors, Proceedings of FTRTFT'98, volume 1486 of LNCS, pages 311-314. Springer Verlag, 1998. (c) Springer-Verlag. This publication is available here and at Springer.
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[DT98]

H. Dierks and J. Tapken. Tool-Supported Hierarchical Design of Distributed Real-Time Systems. In Euromicro Workshop on Real Time Systems, pages 222-229. IEEE, 1998.
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[Tap97]

Josef Tapken. Interactive and Compilative Simulation of PLC-Automata. In Winfried Hahn and Axel Lehmann, editors, Simulation in Industry, ESS'97, pages 552-556. Society for Computer Simulation, 1997.
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[FT97]

Hans Fleischhack and Josef Tapken. An M-Net semantics for a real-time extension of muSDL. In Formal Methods: Their Industrial Application and Strengthened Foundations (FME'97), volume 1313 of Lecture Notes in Computer Science, pages 162-181. Springer-Verlag, 1997.
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[FT95]

Hans Fleischhack and Josef Tapken. Eine kompositionelle Petrinetz-Semantik für SDL-Spezifikationen. In J. Desel, Hans Fleischhack, A. Oberweis, and Michael Sonnenschein, editors, 2. Workshop Algorithmen und Werkzeuge für Petrinetze, number 22 in AIS reports. Fachbereich Informatik, Universität Oldenburg, 1995.
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