1. 29 Apr, 2015 1 commit
  2. 13 Apr, 2015 1 commit
    • David Hauzar's avatar
      Transformation that for each declared abstract function and predicate · 9b6d889c
      David Hauzar authored
      p labeled with label "model_projected" for that it exists a projection
      function f creates declaration of new constant c and axiom stating that
      c = f p
      
      Projection functions are functions tagged with meta "model_projection".
      Function f is projection function for abstract function and predicate p
      if f is tagged with meta "model_projection" and has a single argument
      of the same type as is the type of p.
      
      This transformation is needed in situations when we want to display not
      value of a variable, but value of a projection function applied to a variable.
      
      Note that since Why3 supports namespaces (different projection functions
      can have the same name) and input languages of solvers typically not,
      Why3 renames projection functions to avoid name clashes.
      This is why it is not possible to just store the name of the projection
      function in a label and than query the solver directly for the value of
      the projection.
      Also, it means that this transformation should thus be executed before
      this renaming.
      9b6d889c
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    • Léon Gondelman's avatar
      New transformations induction_pr and inversion_pr. · 8388828a
      Léon Gondelman authored
      Induction_pr performs induction on the leftmost application
      of some inductive predicate in the goal.
      
      This can be overriden by attaching the label "induction"
      on such an application. In this case, any unlabeled application
      will be ignored.
      
      Inversion_pr works similarly, excepted that it does not generate
      inductive hypotheses, but simply inverses inductive predicate.
      In this case, the label "inversion" will be used.
      8388828a
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