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In open systems verification, to formally check for reliability, one needs an appropriate formalism to model the interaction between open entities and express that the system is correct no matter how the environment behaves. An important contribution in this context is given by modal logics for strategic ability, in the setting of multi-agent games, such as… (More)

In open systems verification, to formally check for reliability, one needs an appropriate formalism to model the interaction between agents and express the correctness of the system no matter how the environment behaves. An important contribution in this context is given by modal logics for strategic ability, in the setting of multiagent games, such as… (More)

In recent years, huge effort has been devoted to the definition of modal logics for strategic reasoning in the setting of multi-agent games. In this area, a recent contribution is the introduction of Strategy Logic (SL, for short) by Mogavero, Murano, and Vardi. This logic allows to reason explicitly about strategies as first order objects. It strictly… (More)

Strategy Logic (SL, for short) has been recently introduced by Mo-gavero, Murano, and Vardi as a formalism for reasoning explicitly about strategies, as first-order objects, in multi-agent concurrent games. This logic turns out to be very powerful, strictly subsuming all major previously studied modal logics for strategic reasoning, including ATL, ATL * ,… (More)

Temporal logics are a well investigated formalism for the specification , verification, and synthesis of reactive systems. Within this family, alternating temporal logic, ATL*, has been introduced as a useful generalization of classical linear-and branching-time temporal logics by allowing temporal operators to be indexed by coalitions of agents.… (More)

In modal logics, <i>graded (world) modalities</i> have been deeply investigated as a useful framework for generalizing standard existential and universal modalities in such a way that they can express statements about a given number of immediately accessible worlds. These modalities have been recently investigated with respect to the μCalculus, which… (More)

We introduce MCMAS-SLK, a BDD-based model checker for the verification of systems against specifications expressed in a novel, epistemic variant of strategy logic. We give syntax and semantics of the specification language and introduce a labelling algorithm for epistemic and strategy logic modalities. We provide details of the checker which can also be… (More)

In automated synthesis, given a specification, we automatically create a system that is guaranteed to satisfy the specification. In the classical temporal synthesis algorithms, one usually creates a " flat " system " from scratch ". However, real-life software and hardware systems are usually created using pre-existing libraries of reusable components, and… (More)

Policy comparison is useful for a variety of applications, including policy validation and policy-aware service selection. While policy comparison is somewhat natural for policy languages based on description logics, it becomes rather difficult for rule-based policies. When policies have recursive rules, the problem is in general undecidable. Still most… (More)

Parity games are a powerful formalism for the automatic synthesis and verification of reactive systems. They are closely related to alternating ω-automata and emerge as a natural method for the solution of the µ-calculus model checking problem. Due to these strict connections, parity games are a well-established environment to describe liveness properties… (More)