Best paper award for Thomas Neele, Tim Willemse and Jan Friso Groote.
'Solving parameterised Boolean equation systems with infinite data through quotienting' van Thomas Neele, Tim Willemse en Jan Friso Groote, dat afgelopen oktober gepresenteerd werd door Thomas Neele tijdens de 15th International Conference on Formal Aspects of Component Software heeft Best Paper Award gewonnen.
Parameterised Boolean Equation Systems (PBESs) can be used to represent many different kinds of decision problems. Most notably, model checking and equivalence problems can be encoded in a PBES. Traditional instantiation techniques cannot deal with PBESs with an infinite data domain. We propose an approach that can solve PBESs with infinite data by computing the bisimulation quotient of the underlying graph structure. Furthermore, we show how this technique can be improved by repeatedly searching for finite proofs. Unlike existing approaches, our technique is not restricted to subfragments of PBESs. Experimental results show that our ideas work well in practice and support a wider range of models and properties than state-of-the-art techniques.