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<a target="_blank" rel="noopener" href="https://fatcat.wiki/container/wvv27s77dvd5flktsj246kcxwu" style="color: black;">2013 35th International Conference on Software Engineering (ICSE)</a>
The scenario-based approach to the specification and simulation of reactive systems has attracted much research efforts in recent years. While the problem of synthesizing a controller or a transition system from a scenario-based specification has been studied extensively, no work has yet effectively addressed the case where the specification is unrealizable and a controller cannot be synthesized. This has limited the effectiveness of using scenario-based specifications in requirements analysis<span class="external-identifiers"> <a target="_blank" rel="external noopener noreferrer" href="https://doi.org/10.1109/icse.2013.6606570">doi:10.1109/icse.2013.6606570</a> <a target="_blank" rel="external noopener" href="https://dblp.org/rec/conf/icse/MaozS13.html">dblp:conf/icse/MaozS13</a> <a target="_blank" rel="external noopener" href="https://fatcat.wiki/release/lidvfy6yi5bidjc363tqkxnfx4">fatcat:lidvfy6yi5bidjc363tqkxnfx4</a> </span>
more »... nd simulation. In this paper we present counter play-out, an interactive debugging method for unrealizable scenario-based specifications. When we identify an unrealizable specification, we generate a controller that plays the role of the environment and lets the engineer play the role of the system. During execution, the former chooses environment's moves such that the latter is forced to eventually fail in satisfying the system's requirements. This results in an interactive, guided execution, leading to the root causes of unrealizability. The generated controller constitutes a proof that the specification is conflicting and cannot be realized. Counter play-out is based on a counter strategy, which we compute by solving a Rabin game using a symbolic, BDDbased algorithm. The work is implemented and integrated with PlayGo, an IDE for scenario-based programming developed at the Weizmann Institute of Science. Case studies show the contribution of our work to the state-of-the-art in the scenariobased approach to specification and simulation. 978-1-4673-3076-3/13 c 2013 IEEE ICSE 2013, San Francisco, CA, USA Accepted for publication by IEEE. c 2013 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
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