Automated Verification of Dense-Time MTL Specifications Via Discrete-Time Approximation

  • Carlo A. Furia
  • Matteo Pradella
  • Matteo Rossi
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5014)


This paper presents a verification technique for dense-time MTL based on discretization. The technique reduces the validity problem of MTL formulas from dense to discrete time, through the notion of sampling invariance, introduced in previous work [13]. Since the reduction is from an undecidable problem to a decidable one, the technique is necessarily incomplete, so it fails to provide conclusive answers for some formulas. The paper discusses this shortcoming and hints at how it can be mitigated in practice. The verification technique has been implemented on top of the ℤot tool [19] for discrete-time bounded validity checking; the paper also reports on in-the-small experiments with the tool, which show some results that are promising in terms of performance.


real-time metric temporal logic discretization dense time verification techniques sampling 


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© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Carlo A. Furia
    • 1
  • Matteo Pradella
    • 2
  • Matteo Rossi
    • 1
  1. 1.Dipartimento di Elettronica e InformazionePolitecnico di MilanoItaly
  2. 2.CNR IEIIT-MIMilanoItaly

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