RVHyper: A Runtime Verification Tool for Temporal Hyperproperties

TL;DR

RVHyper is a runtime verification tool designed to monitor hyperproperties specified in HyperLTL, enabling detection of violations and counterexamples in multi-trace systems, with applications in hardware design analysis.

Contribution

The paper introduces RVHyper, the first runtime verifier for hyperproperties expressed in HyperLTL, capable of processing multiple traces and detecting violations in real-time.

Findings

Successfully detects violations of hyperproperties during execution.

Provides counterexamples in the form of trace sets.

Applied to hardware design to identify spurious dependencies.

Abstract

We present 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 HyperLTL, which extends linear-time temporal logic (LTL) with trace quantifiers and trace variables. 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 RVHyper can be used to detect spurious dependencies in hardware designs.