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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _narrow_states(node, old_state, new_state, previously_widened_state):
 # pylint:disable=unused-argument,no-self-use """ Try to narrow the state! :param old_state: :param new_state: :param previously_widened_state: :returns: The narrowed state, and whether a narrowing has occurred """


        l.debug('Narrowing state at IP %s', previously_widened_state.ip)

        s = previously_widened_state.copy()

        narrowing_occurred = False

        # TODO: Finish the narrowing logic

        return s, narrowing_occurred