(2018) MGHyper: Checking Satisfiability of HyperLTL Formulas Beyond the \exists* \forall* Fragment.
Abstract
Hyperproperties are properties that refer to multiple computation traces. This includes many information-flow security policies, such as observational determinism, (generalized) noninterference, and noninference, and other system properties like symmetry or Hamming distances between in error-resistant codes. We introduce MGHyper, a tool for automatic satisfiability checking and model generation for hyperproperties expressed in HyperLTL. Unlike previous satisfiability checkers, MGHyper is not limited to the decidable ∃ ∗∀ ∗ fragment of HyperLTL, but provides a semi-decisionprocedure for the full logic. An important application of MGHyper is to automatically check equivalences between different hyperproperties (and different formalizations of the same hyperproperty) and to build counterexamples that disprove a certain claimed implication. We describe the semi-decisionprocedure implemented in MGHyper and report on experimental results obtained both with typical hyperproperties from the literature and with randomly generated HyperLTL formulas.
| Item Type: | Conference or Workshop Item (A Paper) (Paper) |
|---|---|
| Conference: | ATVA International Symposium on Automated Technology for Verification and Analysis |
| Depositing User: | Bernd Finkbeiner |
| Date Deposited: | 23 Jun 2019 18:39 |
| Last Modified: | 15 Oct 2020 09:56 |
| Primary Research Area: | NRA2: Reliable Security Guarantees |
| URI: | https://publications.cispa.saarland/id/eprint/2928 |
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