Returns whether the constraints is satisfied trivially by using the
        last model.

def eval_constraints(self, constraints):
        """Returns whether the constraints is satisfied trivially by using the
        last model."""
        # eval_ast is concretizing symbols and evaluating them, this can raise
        # exceptions.
        try:
            return all(self.eval_ast(c) for c in constraints)
        except errors.ClaripyZeroDivisionError:
            return False