Component-Based Verification Model of Sequential Programs

Verification of Sequential Controllers with Timing Functions for Chemical Processes

The paper describes a model-based approach to the formal verification of sequential control programs for chemical processes. It is assumed that the control software is represented as a Sequential Function Chart (SFC) which may include timing constraints for the control actions. The verification method is based on a timed Condition/Event (C/E) model of the uncontrolled plant which will be connec...

Runtime verification of programs using rule-based active system

On the Model Checking of Sequential Reactive Systems

By sequential reactive system we mean a program which operates in the interaction with the environment permanently receiving data (requests) from it. At receiving a piece of data a program performs a sequence of actions (response) and displays the current result. Such programs usually arise at implementation of computer drivers, online algorithms, control procedures. Basic actions performed by ...

Verification of Plc Programs Written in Fbd with Vis

Software safety [1] is an important issue for embedded real-time control systems such as those found in nuclear power plants. When verifying safety-critical software, formal methods [2] play critical roles in demonstrating compliance to regulatory requirements. The Korea Nuclear Instrumentation & Control System R&D Center (KNICS) [3] project used the NuSCR [4] formal specification language and ...

Verification of PLC Programs Given as Sequential Function Charts

Programmable Logic Controllers (PLC) are widespread in the manufacturing and processing industries to realize sequential procedures and to avoid safety-critical states. For the specification and the implementation of PLC programs, the graphical and hierarchical language Sequential Function Charts (SFC) is increasingly used in industry. To investigate the correctness of SFC programs with respect...