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Hyperproperties are properties that refer to multiple computation traces.This includes many information-flow security policies, such as observationaldeterminism, (generalized) noninterference, and noninference, and other systemproperties like symmetry or Hamming distances between in error-resistant codes.We introduce MGHyper, a tool for automatic satisfiability checking and modelgeneration for hyperproperties expressed in HyperLTL. Unlike previoussatisfiability checkers, MGHyper is not limited to the decidable $\exists^*\forall^*$ fragment of HyperLTL, but provides a semi-decisionprocedure for thefull logic. An important application of MGHyper is to automatically checkequivalences between different hyperproperties (and different formalizations ofthe same hyperproperty) and to build counterexamples that disprove a certainclaimed implication. We describe the semi-decisionprocedure implemented inMGHyper and report on experimental results obtained both with typicalhyperproperties from the literature and with randomly generated HyperLTLformulas.

MGHyper: Checking Satisfiability of HyperLTL Formulas Beyond the $\exists^*\forall^*$ Fragment

MGHyper: Checking Satisfiability of HyperLTL Formulas Beyond the $\exists^\forall^$ Fragment