This paper aims to develop a verification method for procedural programs via a transformation into Logically Constrained Term Rewriting Systems (LCTRSs). To this end, we extend transformation methods based on integer TRSs to handle arbitrary data types, global variables, function calls and arrays, as well as encode safety checks. Then we adapt existing rewriting induction methods to LCTRSs and ...

This paper describes and analyses the possibilities of a quantitative assessment of message transmission between safety-related equipment for control and communication systems with a guarantee of a higher safety integrity level (SIL). The theoretical methods and standards recommended for industrial safety-related con344 K. Rástočný, M. Franeková, I. Zolotová, K. Rástočný, Jr. trol, information ...

Model-Driven Engineering enables to assess a system’s model properties since the early phases of its lifecycle and to improve iteratively these models according to the verification results. Safety critical real-time systems have stringent requirements related to the specification and verification of system’s task-level time constraints. The common formal methods used to assess these properties ...

C is the most widely used imperative system’s implementation language. While C provides types and high-level abstractions, its design goal has been to provide highest performance which often requires low-level access to memory. As a consequence C supports arbitrary pointer arithmetic, casting, and explicit allocation and deallocation. These operations are difficult to use, resulting in programs...

The rapid growth of software intensive active safety functions in modern cars resulted in adoption of new safety development standards like ISO 26262 by the automotive industry. Hazard analysis, safety assessment and adequate verification and validation methods for software and car electronics require effort but in the long run save lives. We argue that in the face of complex software developme...

While safety is not implicitely a security problem, a security compromise is a safety concern. The move to autonomy has brought this need to a national level. Every domain with security and safety critical systems is looking to advance the state of the art in certification including, aviation, transportation, information assurance, medical, and energy. Verification and Validation of these syste...

Verification of IEC61131-3 based safety applications is a challenge in the development process of industrial systems. In this paper, we formally describe the set of transformation rules we have defined for the automatic transformation of IEC61131-3 function block based safety applications to UPPAAL timed automata models. These models are used for the verification of the safety application. Both...

This paper presents the results of a number of computations using the 2D FEM to show the effects of significant variables on the behavior of geosynthetically reinforced earth slopes. The verification and reliability of the results are primarily examined through comparisons with experimental data available. The results seem to be quite acceptable and can be used with a high degree of reliability...

Verification of safety requirements is one important task during the development of safety critical systems. The increasing complexity of systems makes manual analysis almost impossible. This paper introduces a new methodology for formal verification of technical systems with smartIflow (State Machines for Automation of Reliability-related Tasks using Information FLOWs). smartIflow is a new mod...

Instrumentation and control (I&C) systems play a crucial role in the operation of nuclear power plants (NPP) and other safety critical processes. An important change is the replacement of the old analogue I&C systems with new digitalised ones. The programmable digital logic controllers enable more complicated control tasks than the old analogue systems and thus the validation of the control log...