Runtime verification of embedded real-time systems
نویسندگان
چکیده
We present a runtime verification framework that allows on-line monitoring of past-time Metric Temporal Logic (ptMTL) specifications in a discrete time setting. We design observer algorithms for the time-bounded modalities of ptMTL, which take advantage of the highly parallel nature of hardware designs. The algorithms can be translated into efficient hardware blocks, which are designed for reconfigurability, thus, facilitate applications of the framework in both a prototyping and a post-deployment phase of embedded real-time systems. We provide formal correctness proofs for all presented observer algorithms and analyze their time and space complexity. For example, for the most general operator considered, the time-bounded Since operator, we obtain a time complexity that is doubly logarithmic both in the point in time the operator is executed and the operator's time bounds. This result is promising with respect to a self-contained, non-interfering monitoring approach that evaluates real-time specifications in parallel to the system-under-test. We implement our framework on a Field Programmable Gate Array platform and use extensive simulation and logic synthesis runs to assess the benefits of the approach in terms of resource usage and operating frequency.
منابع مشابه
Checking Correctness At Runtime using Real-Time Java
Correctness of a real-time system depends on its computation as well as its timeliness. In recent years, research has been focusing on verifying the correctness of a real-time system during runtime by monitoring its runtime execution and checking it against its formal specifications. Such verification method is called Runtime Verification. While a few existing runtime verification tools verify ...
متن کاملRuntime Verification of Stochastic, Faulty Systems
We desire a capability for the lifelong verification of complex embedded systems that degrade over time, such as a semi-autonomous car. The field of runtime verification has developed many tools for monitoring the safety of software systems in real time. However, these tools do not allow for uncertainty in the system’s state or failure, both of which are essential for monitoring hardware as it ...
متن کاملRuntime Monitoring of Time-sensitive Systems
This tutorial focuses on issues involved in runtime monitoring of time-sensitive systems, where violation of timing constraints are undesired. Our goal is to describe the challenges in instrumenting, measuring, and monitoring such systems and present our solutions developed in the past few years to deal with these challenges. The tutorial consists of two parts. First, we present challenge probl...
متن کاملSafety Verification of Real Time Systems Serving Periodic Devices
In real-time systems response to a request from a controlled object must be correct and timely. Any late response to a request from such a device might lead to a catastrophy. The possibility of a task overrun, i.e., missing the deadline for completing a requested task, must be checked and removed during the design of such systems. Safe design of real-time systems running periodic tasks under th...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره 44 شماره
صفحات -
تاریخ انتشار 2014