[Spot] Possible Bug in SPOT

Hi all, I am using SPOT by following command autfilt --equivalent-to=A.hoa B.hoa to check the equivalence of two Buchi automata A.hoa and B.hoa (attached). It returns nothing and it means two automata are not equivalent. But actually I used GOAL and RABIT to check the equivalence, they said yes. I think you may want to have a look. Regards, Yong -- Yong Li (李勇), State Key Lab. of Computer Science Institute of Software, Chinese Academy of Sciences