0.00/0.65 NO 0.00/0.66 0.00/0.66 0.00/0.66 The system was reversed. 0.00/0.66 0.00/0.66 Remains to prove termination of the 2-rule system 0.00/0.66 { a -> b , 0.00/0.66 c a b b -> a b a c c a } 0.00/0.66 0.00/0.66 0.00/0.66 Loop of length 17 starting with a string of length 10 using right expansion 0.00/0.66 and the encoding {a=a, b=b, c=c}: 0.00/0.66 0.00/0.66 .cabb.bbbbbb 0.00/0.66 rule cabb -> abacca at position 0 0.00/0.66 .abacca.bbbbbb 0.00/0.66 rule cabb -> abacca at position 4 0.00/0.66 .abacabacca.bbbb 0.00/0.66 rule a -> b at position 6 0.00/0.66 .abacabbcca.bbbb 0.00/0.66 rule cabb -> abacca at position 8 0.00/0.66 .abacabbcabacca.bb 0.00/0.66 rule a -> b at position 10 0.00/0.66 .abacabbcabbcca.bb 0.00/0.66 rule cabb -> abacca at position 7 0.00/0.66 .abacabbabaccacca.bb 0.00/0.66 rule a -> b at position 7 0.00/0.66 .abacabbbbaccacca.bb 0.00/0.66 rule a -> b at position 9 0.00/0.66 .abacabbbbbccacca.bb 0.00/0.66 rule cabb -> abacca at position 14 0.00/0.66 .abacabbbbbccacabacca. 0.00/0.66 rule a -> b at position 16 0.00/0.66 .abacabbbbbccacabbcca. 0.00/0.66 rule cabb -> abacca at position 13 0.00/0.66 .abacabbbbbccaabaccacca. 0.00/0.66 rule a -> b at position 13 0.00/0.66 .abacabbbbbccabbaccacca. 0.00/0.66 rule cabb -> abacca at position 11 0.00/0.66 .abacabbbbbcabaccaaccacca. 0.00/0.66 rule a -> b at position 13 0.00/0.66 .abacabbbbbcabbccaaccacca. 0.00/0.66 rule cabb -> abacca at position 10 0.00/0.66 .abacabbbbbabaccaccaaccacca. 0.00/0.66 rule a -> b at position 10 0.00/0.66 .abacabbbbbbbaccaccaaccacca. 0.00/0.66 rule a -> b at position 12 0.00/0.66 .abacabbbbbbbbccaccaaccacca. 0.00/0.69 EOF