Predictive runtime verification of timed properties

Runtime verification of programs using rule-based active system

Monitoring of Real-Time Properties

This paper presents a construction for runtime monitors that check real-time properties expressed in timed LTL (TLTL). Due to D’Souza’s results, TLTL can be considered a natural extension of LTL towards real-time. Moreover, a typical obstacle in runtime verification is solved both for untimed and timed formulae, in that standard models of linear temporal logic are infinite traces, whereas in ru...

Understanding the Timed Distributed Trace of a Partially Synchronous System at Runtime

It has gained broad attention to understand the timed distributed trace of a cyber-physical system at runtime, which is often achieved by verifying properties over the observed trace of system execution. However, this verification is facing severe challenges. First, in realistic settings, the computing entities only have imperfectly synchronized clocks. A proper timing model is essential to the...

Static analysis meets runtime verification (NII Shonan Meeting 2015-5)

operation contracts Reiner Hähnle, TU Darmstadt Proof reuse in formal software verification is crucial in presence of constant evolutionary changes to the verification target. Contract-based verification makes it possible to verify large programs, because each method in a program can be verified against its contract separately. A small change to some contract, however, invalidates all proofs th...

Runtime Verification Based on Executable Models: On-the-Fly Matching of Timed Traces

Runtime verification is checking whether a system execution satisfies or violates a given correctness property. A procedure that automatically, and typically on the fly, verifies conformance of the system’s behavior to the specified property is called a monitor. Nowadays, a variety of formalisms are used to express properties on observed behavior of computer systems, and a lot of methods have b...