Three partition refinement algorithms
SIAM Journal on Computing
Bisimulation through probabilistic testing
Information and Computation
Deciding bisimilarity and similarity for probabilistic processes
Journal of Computer and System Sciences
POPL '77 Proceedings of the 4th ACM SIGACT-SIGPLAN symposium on Principles of programming languages
Systematic design of program analysis frameworks
POPL '79 Proceedings of the 6th ACM SIGACT-SIGPLAN symposium on Principles of programming languages
Probabilistic simulations for probabilistic processes
Nordic Journal of Computing
Incompleteness, Counterexamples, and Refinements in Abstract Model-Checking
SAS '01 Proceedings of the 8th International Symposium on Static Analysis
Computing simulations on finite and infinite graphs
FOCS '95 Proceedings of the 36th Annual Symposium on Foundations of Computer Science
A New Efficient Simulation Equivalence Algorithm
LICS '07 Proceedings of the 22nd Annual IEEE Symposium on Logic in Computer Science
A Space-Efficient Probabilistic Simulation Algorithm
CONCUR '08 Proceedings of the 19th international conference on Concurrency Theory
Logical characterizations of bisimulations for discrete probabilistic systems
FOSSACS'07 Proceedings of the 10th international conference on Foundations of software science and computational structures
A spectrum of behavioral relations over LTSs on probability distributions
CONCUR'11 Proceedings of the 22nd international conference on Concurrency theory
Formal Methods in System Design
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We show how bisimulation equivalence and simulation preorder on probabilistic LTSs (PLTSs), namely the main behavioural relations on probabilistic nondeterministic processes, can be characterized by abstract interpretation. Both bisimulation and simulation can be obtained as completions of partitions and preorders, viewed as abstract domains, w.r.t. a pair of concrete functions that encode a PLTS. As a consequence, this approach provides a general framework for designing algorithms for computing bisimulation and simulation on PLTSs. Notably, (i) we show that the standard bisimulation algorithm by Baier et al. can be viewed as an instance of such a framework and (ii) we design a new efficient simulation algorithm that improves the state of the art.