Articles, chapters, papers, reports Department of Computer Science and Engineering

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Browsing Articles, chapters, papers, reports Department of Computer Science and Engineering by Author "Görlitz, Oliver"

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    COOL 2 – A Generic Reasoner for Modal Fixpoint Logics (System Description)
    (2023) Görlitz, Oliver; Hausmann, Daniel; Humml, Merlin; Pattinson, Dirk; Prucker, Simon; Schröder, Lutz
    There is a wide range of modal logics whose semantics goes beyond relational structures, and instead involves, e.g., probabilities, multi-player games, weights, or neighbourhood structures. Coalgebraic logic serves as a unifying semantic and algorithmic framework for such logics. It provides uniform reasoning algorithms that are easily instantiated to particular, concretely given logics. The COOL 2 reasoner provides an implementation of such generic algorithms for coalgebraic modal fixpoint logics. As concrete instances, we obtain in particular reasoners for the aconjunctive and alternation-free fragments of the graded μ -calculus and the alternating-time μ -calculus. We evaluate the tool on standard benchmark sets for fixpoint-free graded modal logic and alternating-time temporal logic (ATL), as well as on a dedicated set of benchmarks for the graded μ -calculus.