There are cases where a loop has two overlapping loop headers thanks
        to the way VEX is dealing with continuous instructions. As we were
        breaking the connection between the second loop header and its
        successor, we shall restore them in our CDG.

def _post_process(self):
        """
        There are cases where a loop has two overlapping loop headers thanks
        to the way VEX is dealing with continuous instructions. As we were
        breaking the connection between the second loop header and its
        successor, we shall restore them in our CDG.
        """
        # TODO: Verify its correctness
        loop_back_edges = self._cfg.get_loop_back_edges()
        for b1, b2 in loop_back_edges:
            self._graph.add_edge(b1, b2)