REAL-TIME SYSTEMS: Formal Specification and Automatic Verification

Ernst-Rüdiger Olderog and Henning Dierks

Real-time systems need to react to certain input stimuli within given time bounds. For example, an airbag in a car has to unfold within 300 milliseconds in a crash. There are many embedded safety-critical applications and each requires real-time specification techniques. This text introduces three of these techniques, based on logic and automata: duration calculus, timed automata, and PLC-automata. The techniques are brought together to form a seamless design flow, from real-time requirements specified in the duration calculus; via designs specified by PLC-automata; and into source code for hardware platforms of embedded systems. The syntax, semantics, and proof methods of the specification techniques are introduced; their most important properties are established; and real-life examples illustrate their use. Detailed case studies and exercises conclude each chapter. Ideal for students of real-time systems or embedded systems, this text will also be of great interest to researchers and professionals in transportation and automation.

  • Describes real-time systems formally at the levels of requirements, design specifications, and programs
  • Practical aspects are supported by tools that are freely available on the web
  • Introduces automatic verification (model checking) methods for design specifications against real-time requirements
  • Gives automatic translation functions of design specifications to real-time programs

    Table of Contents
    Preface
    Acknowledgements
    List of symbols
    1 Introduction
    2 Duration Calculus
    3 Properties and subsets of DC
    4 Timed automata
    5 PLC-Automata
    6 Automatic verification
    Notations
    Bibliography
    Index