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Model Checking Quantitative Hyperproperties

Version 2 2023-12-11, 20:10
Version 1 2023-11-29, 18:09
conference contribution
posted on 2023-12-11, 20:10 authored by Bernd FinkbeinerBernd Finkbeiner, Christopher Hahn, Hazem Torfah
Hyperproperties are properties of sets of computation traces. In this paper, we study quantitative hyperproperties, which we define as hyperproperties that express a bound on the number of traces that may appear in a certain relation. For example, quantitative non-interference limits the amount of information about certain secret inputs that is leaked through the observable outputs of a system. Quantitative non-interference thus bounds the number of traces that have the same observable input but different observable output. We study quantitative hyperproperties in the setting of HyperLTL, a temporal logic for hyperproperties. We show that, while quantitative hyperproperties can be expressed in HyperLTL, the running time of the HyperLTL model checking algorithm is, depending on the type of property, exponential or even doubly exponential in the quantitative bound. We improve this complexity with a new model checking algorithm based on model-counting. The new algorithm needs only logarithmic space in the bound and therefore improves, depending on the property, exponentially or even doubly exponentially over the model checking algorithm of HyperLTL. In the worst case, the new algorithm needs polynomial space in the size of the system. Our Max#Sat-based prototype implementation demonstrates, however, that the counting approach is viable on systems with nontrivial quantitative information flow requirements such as a passcode checker.


Preferred Citation

Bernd Finkbeiner, Christopher Hahn and Hazem Torfah. Model Checking Quantitative Hyperproperties. In: Computer Aided Verification (CAV). 2018.

Primary Research Area

  • Reliable Security Guarantees

Name of Conference

Computer Aided Verification (CAV)

Legacy Posted Date


Open Access Type

  • Unknown


@inproceedings{cispa_all_2930, title = "Model Checking Quantitative Hyperproperties", author = "Finkbeiner, Bernd and Hahn, Christopher and Torfah, Hazem", booktitle="{Computer Aided Verification (CAV)}", year="2018", }

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