LSC Verification for UML Models with Unbounded Creation and Destruction

  • Authors:
  • Bernd Westphal

  • Affiliations:
  • Department für Informatik, Fk II, Carl von Ossietzky Universität Oldenburg, 26129 Oldenburg, Germany

  • Venue:
  • Electronic Notes in Theoretical Computer Science (ENTCS)
  • Year:
  • 2006

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Abstract

The approaches to automatic formal verification of UML models known up to now require a finite bound on the number of objects existing at each point in time. In [W. Damm, B. Westphal, Live and let die: LSC-based verification of UML-models, Science of of Computer Programming 55 (2005) 117-159] we have observed that the class of hardware systems with replicated components studied by McMillan [K.L. McMillan, A methodology for hardware verification using compositional model checking, Science of Computer Programming 37 (2000) 279-309] is equivalent to the class of systems where the only source of infiniteness is unbounded creation and destruction of objects, i.e. where all data-types except for object identities are finite. Exploiting the symmetry of UML models induced by objects being instances of classes, the restriction to finite bounds can be overcome applying [K.L. McMillan, A methodology for hardware verification using compositional model checking, Science of Computer Programming 37 (2000) 279-309]. In this paper we report on experiences from an evaluation of this approach within the UML Verifi- cation Environment (UVE) [I. Schinz, T. Toben, C. Mrugalla and B. Westphal, The Rhapsody UML Verification Environment, in: J.R. Cuellar and Z. Liu, editors, Proceedings SEFM 2004 (2004), pp. 174-183], a state-of-the-art tool for formal verification of UML models using Live Sequence Charts (LSC) [W. Damm, D. Harel, LSCs: Breathing Life into Message Sequence Charts, Formal Methods in System Design 19 (2001) 45-80] for requirements specification.