This case study concerns the problem of scheduling tasks between several processors. The models here are partially observable probabilistic timed automata (POPTAs), as described in [NPZ17]. These extend the the probabilistic timed automaton (PTA) version from [NPS13]. Both are extensions of the timed automaton example from [BFLM11]. For more information, see: http://www.prismmodelchecker.org/casestudies/task_graph.php ===================================================================================== [BFLM11] P. Bouyer, U. Fahrenberg, K. Larsen and N. Markey Quantitative Analysis of Real-Time Systems Using Priced Timed Automata Communications of the ACM, 54(9), pages 78-87, 2011 [KNP19] Marta Kwiatkowska, Gethin Norman and David Parker Verification and Control of Turn-Based Probabilistic Real-Time Games In The Art of Modelling Computational Systems: A Journey from Logic and Concurrency to Security and Privacy (Essays Dedicated to Catuscia Palamidessi on the Occasion of Her 60th Birthday), volume 11760 of LNCS, pages 379-396, Springer, 2019 [NPS13] Gethin Norman, David Parker and Jeremy Sproston Model Checking for Probabilistic Timed Automata Formal Methods in System Design, 43(2), pages 164-190, Springer, 2013 [NPZ17] Gethin Norman, David Parker and Xueyi Zou Verification and Control of Partially Observable Probabilistic Systems Real-Time Systems, 53(3), pages 354-402, Springer, 2017