internal void AssertArith(int vid, ArithExpr variable)
{
// Get the bounds on the row
Rational lower, upper;
_model.GetBounds(vid, out lower, out upper);
// Case of equality
if (lower == upper)
{
// Create the equality term
Expr eqConst = GetNumeral(lower, variable.Sort);
BoolExpr constraint = _context.MkEq(eqConst, variable);
// Assert the constraint
_optSolver.Assert(constraint);
}
else
{
// If upper bound is finite assert the upper bound constraint
if (lower.IsFinite)
{
// Create the lower Bound constraint
ArithExpr lowerTerm = GetNumeral(lower, variable.Sort);
BoolExpr constraint = _context.MkLe(lowerTerm, variable);
// Assert the constraint
_optSolver.Assert(constraint);
}
// If lower bound is finite assert the lower bound constraint
if (upper.IsFinite)
{
// Create the upper bound constraint
ArithExpr upperTerm = GetNumeral(upper, variable.Sort);
BoolExpr constraint = _context.MkGe(upperTerm, variable);
// Assert the constraint
_optSolver.Assert(constraint);
}
}
}
