Use of verification for testing and debugging of complex reactive systems

2005 ◽  
Author(s):  
M. Trakhtenbrot
Keyword(s):  
Reactive Systems ◽  
Testing And Debugging

First Steps Towards a Wise Development Environment for Behavioral Models

2016 ◽  
Vol 7 (3) ◽  
pp. 1-22 ◽  
Author(s):  
David Harel ◽  
Guy Katz ◽  
Rami Marelly ◽  
Assaf Marron
Keyword(s):  
Reactive Systems ◽  
Initial Step ◽  
Emergent Properties ◽  
Behavioral Models ◽  
Levels Of Abstraction ◽  
Development Environment ◽  
Testing And Debugging ◽  
Development Framework ◽  
Computing Vision ◽  
Behavioral Programming

The authors present an initial wise development framework: a development environment that proactively and interactively assists the software engineer in modeling complex reactive systems. Their framework repeatedly analyzes models of the system under development at various levels of abstraction, and then reasons about these models in order to detect possible errors, to derive emergent properties of interest, and to assist in system testing and debugging. Upon request, the environment can instrument the system model in order to monitor or test the execution for certain behaviors, or even augment it in order to repair or avoid detected behavior that is undesired. The direction and prioritization of the analysis and related tasks is based on the relevance of the observed properties and the expected impact of actions to be taken, and is performed by specialized automated and human-assisted techniques that have been incorporated into the framework. The authors' development environment is an initial step in the direction of their recent Wise Computing vision, which calls for turning the computer (namely, the development environment) into an equal member of the development team: knowledgeable, independent, concerned and proactively involved in the development process. They have implemented their tool within the context of behavioral programming (BP) – a scenario-based modeling approach, in which components are aligned with how humans often describe desired system behavior. The authors' work thus further enhances the naturalness and incrementality of developing in BP.

scholarly journals Runtime verification and validation of functional reactive systems

2020 ◽  
Vol 30 ◽  
Author(s):  
IVAN PEREZ ◽  
HENRIK NILSSON
Keyword(s):  
Reactive Systems ◽  
Verification And Validation ◽  
Random Testing ◽  
Hardware In The Loop ◽  
Tolerance Mechanisms ◽  
Time Line ◽  
Testing And Debugging ◽  
Interactive Applications ◽  
Functional Reactive Programming ◽  
Software And Hardware

Abstract Many types of interactive applications, including reactive systems implemented in hardware, interactive physics simulations and games, raise particular challenges when it comes to testing and debugging. Reasons include de facto lack of reproducibility and difficulties of automatically generating suitable test data. This paper demonstrates that certain variants of functional reactive programming (FRP) implemented in pure functional languages can mitigate such difficulties by offering referential transparency at the level of whole programs. This opens up for a multi-pronged approach for assisting with testing and debugging that works across platforms, including assertions based on temporal logic, recording and replaying of runs (also from deployed code), and automated random testing using QuickCheck. When combined with extensible forms of FRP that allow for constrained side effects, it allows us to not only validate software simulations but to analyse the effect of faults in reactive systems, confirm the efficacy of fault tolerance mechanisms and perform software- and hardware-in-the-loop testing. The approach has been validated on non-trivial systems implemented in several existing FRP implementations, by means of careful debugging using a tool that allows the test or simulation under scrutiny to be controlled, moving along the execution time line, and pin-pointing of violations of assertions on personal computers as well as external devices.

Comparative Assessment of Optical Techniques for Semi-Invasive SRAM Data Read-out on an MSP430 Microcontroller

2018 ◽  
Author(s):  
Tuba Kiyan ◽  
Heiko Lohrke ◽  
Christian Boit
Keyword(s):  
Supply Voltage ◽  
Photon Emission ◽  
Random Access ◽  
Integration Time ◽  
Security Evaluation ◽  
Testing And Debugging ◽  
Advantages And Disadvantages ◽  
The Core ◽  
Voltage Signal ◽  
Chip Testing

Abstract This paper compares the three major semi-invasive optical approaches, Photon Emission (PE), Thermal Laser Stimulation (TLS) and Electro-Optical Frequency Mapping (EOFM) for contactless static random access memory (SRAM) content read-out on a commercial microcontroller. Advantages and disadvantages of these techniques are evaluated by applying those techniques on a 1 KB SRAM in an MSP430 microcontroller. It is demonstrated that successful read out depends strongly on the core voltage parameters for each technique. For PE, better SNR and shorter integration time are to be achieved by using the highest nominal core voltage. In TLS measurements, the core voltage needs to be externally applied via a current amplifier with a bias voltage slightly above nominal. EOFM can use nominal core voltages again; however, a modulation needs to be applied. The amplitude of the modulated supply voltage signal has a strong effect on the quality of the signal. Semi-invasive read out of the memory content is necessary in order to remotely understand the organization of memory, which finds applications in hardware and software security evaluation, reverse engineering, defect localization, failure analysis, chip testing and debugging.

Development perspective microelectromechanical systems (MEMS)by methods of semi-real simulation

2006 ◽  
Vol 4 ◽  
pp. 288-305
Author(s):  
A.B. Migranov
Keyword(s):  
Virtual Environment ◽  
Microelectromechanical Systems ◽  
Testing And Debugging ◽  
Development Perspective

The article deals with the issues related to the construction of microelectromechanical systems (MEMS), and the problems arising from their manufacture. Particular attention is paid to micromechanical parts of robot, which were developed by methods of semi-simulation using the virtual environment for designing, testing and debugging MEMS.

Analyzing Event-Based Scheduling in Concurrent Reactive Systems

2015 ◽  
Vol 14 (4) ◽  
pp. 1-27 ◽  
Author(s):  
Jian-Min Jiang ◽  
Huibiao Zhu ◽  
Qin Li ◽  
Yongxin Zhao ◽  
Lin Zhao ◽  
...  
Keyword(s):  
Reactive Systems ◽  
Event Based

Design and implementation of a virtual ARINC 653 simulation platform

SIMULATION ◽  
2021 ◽  
pp. 003754972199601
Author(s):  
Jinchao Chen ◽  
Keke Chen ◽  
Chenglie Du ◽  
Yifan Liu
Keyword(s):  
Real Time ◽  
System Development ◽  
General Purpose ◽  
Simulation Platform ◽  
Communication Management ◽  
Management Communication ◽  
Real Time Simulation ◽  
Testing And Debugging ◽  
Time Simulation ◽  
Efficiency And Effectiveness

The ARINC 653 operation system is currently widely adopted in the avionics industry, and has become the mainstream architecture in avionics applications because of its strong agility and reliability. Although ARINC 653 can efficiently reduce the weight and energy consumption, it results in a serious development and verification problem for avionics systems. As ARINC 653 is non-open source software and lacks effective support for software testing and debugging, it is of great significance to build a real-time simulation platform for ARINC 653 on general-purpose operating systems, improving the efficiency and effectiveness of system development and implementation. In this paper, a virtual ARINC 653 platform is designed and realized by using real-time simulation technology. The proposed platform is composed of partition management, communication management, and health monitoring management, provides the same operation interfaces as the ARINC 653 system, and allows dynamic debugging of avionics applications without requiring the actual presence of real devices. Experimental results show that the platform not only simulates the functionalities of ARINC 653, but also meets the real-time requirements of avionics applications.

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