RVHyper: A Runtime Verification Tool for Temporal Hyperproperties

We present \(\text {RVHyper}\), a runtime verification tool for hyperproperties. Hyperproperties, such as non-interference and observational determinism, relate multiple computation traces with each other. Specifications are given as formulas in the temporal logic \(\text {HyperLTL}\), which extends linear-time temporal logic (LTL) with trace quantifiers and trace variables. \(\text {RVHyper}\) processes execution traces sequentially until a violation of the specification is detected. In this case, a counter example, in the form of a set of traces, is returned. As an example application, we show how \(\text {RVHyper}\) can be used to detect spurious dependencies in hardware designs.