///////////////////////////////////////////////////////////////////////////////
// generate axioms of the kind "forall x:U. {Int2U(U2Int(x))} Int2U(U2Int(x))==x"
// (this makes use of the assumption that only well-typed terms are generated
// by the SMT-solver, i.e., that U2Int is only applied to terms that actually
// are of type int)
protected override VCExpr GenReverseCastAxiom(Function castToU, Function castFromU)
{
//Contract.Requires(castFromU != null);
//Contract.Requires(castToU != null);
Contract.Ensures(Contract.Result <VCExpr>() != null);
VCExpr /*!*/
eq = GenReverseCastEq(castToU, castFromU, out var var, out var triggers);
return(Gen.Forall(HelperFuns.ToList(var), triggers, "cast:" + castFromU.Name, 1, eq));
}
