D-VAL: An automatic functional equivalence validation tool for planning
  domain models
  In this paper, we introduce an approach to validate the functional
equivalence of planning domain models. Validating the functional equivalence of
planning domain models is the problem of formally confirming that two planning
domain models can be used to solve the same set of problems. The need for
techniques to validate the functional equivalence of planning domain models has
been highlighted in previous research and has applications in model learning,
development and extension. We prove the soundness and completeness of our
method. We also develop D-VAL, an automatic functional equivalence validation
tool for planning domain models. Empirical evaluation shows that D-VAL
validates the functional equivalence of most examined domains in less than five
minutes. Additionally, we provide a benchmark to evaluate the feasibility and
scalability of this and future related work.
