2.25/0.87	NO
2.25/0.87	
2.25/0.87	Problem:
2.25/0.87	 a(a(a(a(x1)))) -> b(a(a(a(x1))))
2.25/0.87	 b(b(x1)) -> a(a(b(x1)))
2.25/0.87	
2.25/0.87	Proof:
2.25/0.87	 String Reversal Processor:
2.25/0.87	  a(a(a(a(x1)))) -> a(a(a(b(x1))))
2.25/0.87	  b(b(x1)) -> b(a(a(x1)))
2.25/0.87	  Unfolding Processor:
2.25/0.87	   loop length: 9
2.25/0.87	   terms:
2.25/0.87	    a(a(a(a(b(a(a(a(b(a(a(a(b(x9122)))))))))))))
2.25/0.87	    a(a(a(b(b(a(a(a(b(a(a(a(b(x9122)))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(a(b(a(a(a(b(x9122))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(b(a(a(a(b(x9122))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(a(a(a(a(a(b(x9122)))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(a(a(a(a(b(b(x9122)))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(a(a(a(b(b(b(x9122)))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(a(a(a(b(b(a(a(x9122))))))))))))))))
2.25/0.87	    a(a(a(b(a(a(a(a(b(a(a(a(b(a(a(a(a(x9122)))))))))))))))))
2.25/0.87	   context: a(a(a(b([]))))
2.25/0.87	   substitution:
2.25/0.87	    x9122 -> x9122
2.25/0.87	   Qed
2.25/0.87	EOF