<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def set_states(self, left_state, right_state):
 """ Checks that the specified paths stay the same over the next `depth` states. """


        simgr = self.project.factory.simulation_manager(right_state)
        simgr.stash(to_stash='right')
        simgr.active.append(left_state)
        simgr.stash(to_stash='left')
        simgr.stash(to_stash='stashed_left')
        simgr.stash(to_stash='stashed_right')

        return self.set_simgr(simgr)