Quantitative Multi-Objective Verification for Probabilistic Systems

Date: Tuesday, May 31, 2011
Speaker: Vojtech Forejt
Venue: IST Austria
Notes:

Mondi 2

We present a verification framework for analysing multiple quantitative objectives of systems that exhibit both nondeterministic and stochastic behaviour. These systems are modelled as MDPs, enriched with cost or reward structures that capture, for example, energy usage or performance metrics. Quantitative properties of these models are expressed in a specification language that incorporates probabilistic safety and liveness properties, expected total cost or reward, and supports multiple objectives of these types. We propose and implement an efficient verification framework for such properties and then present two distinct applications of it: firstly, controller synthesis subject to multiple quantitative objectives; and, secondly, quantitative compositional verification. The practical applicability of both approaches is illustrated with experimental results from several large case studies. The talk is joint work with with D. Parker, G. Norman, M. Kwiatkowska and H. Qu which, presented at TACAS 2011.

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