Eagle was introduced as a general purpose rule-based temporal logic for specifying run-time monitors. A novel and relatively efficient interpretative trace-checking scheme via stepwise transformation of an Eagle monitoring formula was defined and implemented. However, application in real-world examples has shown efficiency weaknesses, especially those associated with large-scale symbolic formul...

We describe preliminary results of dynamically specialising Xilinx XC6200 FPGA circuits using the partial evaluation method. This method provides a systematic way to manage the complexity of dynamic reconfiguration in the special case where a general circuit is specialised with respect to a slowly changing input. We describe how we address the verification and run-time support issues which are ...

We describe preliminary results of dynamically specialising Xilinx XC6200 FPGA circuits using the partial evaluation method. This method provides a systematic way to manage the complexity of dynamic reconfiguration in the special case where a general circuit is specialised with respect to a slowly changing input. We describe how we address the verification and run-time support issues which are ...

Formal verification and validation play a crucial role in making cyber-physical systems (CPS) safe. Formal methods make strong guarantees about the system behavior if accurate models of the system can be obtained, including models of the controller and of the physical dynamics. In CPS, models are essential; but any model we could possibly build necessarily deviates from the real world. If the r...

in recent years, formal methods have been used as an important tool forperformance evaluation and verification of a wide range of systems. in the viewpoints of engineers and practitioners, however, there are still some major difficultiesin using formal methods. in this paper, we introduce a new formal modelinglanguage to fill the gaps between object-oriented programming languages (oopls)used by...

SPARK 2014 is a subset of the Ada 2012 programming language that is supported by the GNAT compilation toolchain and multiple open source static analysis and verification tools. These tools can be used to verify that a SPARK 2014 program does not raise language-defined run-time exceptions and that it complies with formal specifications expressed as subprogram contracts. The results of analyses a...

Early in the design of the Java Modeling Language (JML) care was taken in the choice of its logical foundation to ensure that JML could accommodate run-time assertion checking, static analysis and formal verification. At the time, classical two-valued logic was adopted. Since then however, we note that the main JML tools have actually implemented differing semantics, by design. In this paper, w...

Executable formal contracts help verify a program at runtime when static verification fails. However, these contracts may be prohibitively slow to execute, especially when they describe the transformations of data structures. In fact, often an efficient data structure operation with O(log(n)) running time executes in O(n log(n)) when naturally written specifications are executed at run time. We...

This article presents a new verification and validation technique for simulation using dynamic policy specification and enforcement. Security requirements, certain functional requirements, and constraints can be formally specified as policies, and they are used to check at runtime whether the behaviors of the system under simulation are within the given constraints. A policy violation reveals a...

Researchers have developed a number of runtime verification tools that generate runtime monitors in the form of AspectJ aspects. In this work, we present Clara, a novel framework to statically optimize such monitoring aspects with respect to a given program under test. Clara uses a sequence of increasingly precise static analyses to automatically convert a monitoring aspect into a residual runt...