Reasoning with a Bounded Number of Resources in ATL+
Résumé
The resource-bounded alternating-time temporal logic RB±ATL combines strategic reasoning with reasoning about resources. Its model-checking problem is known to be 2EXPTIME-complete (the same as its proper extension RB±ATL *). Several fragments have been identified to lower the complexity. In this work, we consider the variant RB±ATL + which permits Boolean combinations of path formulae starting with single temporal operators, but restricted to a single resource, providing an interesting trade-off between temporal expressivity and resource analysis. We show that the model-checking problem for RB±ATL + restricted to a single agent and a single resource is ∆p2-complete, hence the same as for CTL +. In this case reasoning about resources comes at no extra computational cost. Furthermore, we show that, with an arbitrary number of agents and a fixed number of resources, the problem can be solved in EXPTIME using a Turing reduction to the parity game problem for alternating vector addition systems with states.
Mots clés
model-checking algorithm
2EXPTIME
translation
alternating-time temporal logic ATL
resource
alternating-time temporal logic ATL+
model-checking
one resource
resource-bounded concurrent game structure
bounded number of resources
complexity
alternating vector addition system (AVASS)
vector addition system (VAS)
Origine | Fichiers produits par l'(les) auteur(s) |
---|