Talks and Poster Presentations (with Proceedings-Entry):
E. Abraham, E. Bartocci, B. Bonakdarpour, O. Dobe:
"Probabilistic Hyperproperties with Nondeterminism";
Talk: Proc. of ATVA 2020: the 18th International Symposium on Automated Technology for Verification and Analysis,
- 2020-10-23; in: "Proc. of ATVA 2020: the 18th International Symposium on Automated Technology for Verification and Analysis",
We study the problem of formalizing and checking probabilistic hyperproperties for models that allow nondeterminism in actions. We extend the temporal logic HyperPCTL, which has been previously introduced for discrete-time Markov chains, to enable the specification of hyperproperties also for Markov decision processes. We generalize HyperPCTL by allowing explicit and simultaneous quantification over schedulers and probabilistic computation trees and show that it can express important quantitative requirements in security and privacy. We show that HyperPCTL model checking over MDPs is in general undecidable for quantification over probabilistic schedulers with memory, but restricting the domain to memoryless non-probabilistic schedulers turns the model checking problem decidable. Subsequently, we propose an SMT-based encoding for model checking this language and evaluate its performance.
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
Created from the Publication Database of the Vienna University of Technology.