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Auto-generating Test Sequences Using Model Checkers: A Case Study

  • Mats P. E. Heimdahl
  • Sanjai Rayadurgam
  • Willem Visser
  • George Devaraj
  • Jimin Gao
Part of the Lecture Notes in Computer Science book series (LNCS, volume 2931)

Abstract

Use of model-checking approaches for test generation from requirement models have been proposed by several researchers. These approaches leverage the witness (or counter-example) generation capability of model-checkers for constructing test cases. Test criteria are expressed as temporal properties. Witness traces generated for these properties are instantiated to create complete test sequences, satisfying the criteria. State-space explosion can, however, adversely impact model-checking and hence such test generation. Thus, there is a need to validate these approaches against realistic industrial sized system models to learn how well these approaches scale. To this end, we conducted a case study using six models of progressively increasing complexity of the mode-logic in a flight-guidance system, written in the RSML− e language. We developed a framework for specification-based test generation using the NuSMV model-checker and code based test case generation using Java Pathfinder, and collected time and resource usage data for generating test cases using symbolic, bounded, and explicit state model-checking algorithms. This paper briefly discusses the approach, presents the results from the study and analyzes its implications.

Keywords

Model Checker Test Suite Coverage Criterion Symbolic Model Check Decision Coverage 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2004

Authors and Affiliations

  • Mats P. E. Heimdahl
    • 1
  • Sanjai Rayadurgam
    • 1
  • Willem Visser
    • 2
  • George Devaraj
    • 1
  • Jimin Gao
    • 1
  1. 1.Department of Computer Science and EngineeringUniversity of MinnesotaMinneapolisUSA
  2. 2.NASA Ames Research CenterMoffett Field

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