9.32/2.59 NO 9.32/2.59 9.32/2.59 9.32/2.59 The system was reversed. 9.32/2.59 9.32/2.59 Remains to prove termination of the 2-rule system 9.32/2.59 { a -> b , 9.32/2.59 c a a b -> a a a c c a } 9.32/2.59 9.32/2.59 9.32/2.59 Loop of length 16 starting with a string of length 10 using right expansion 9.32/2.59 and the encoding {a=a, b=b, c=c}: 9.32/2.59 9.32/2.59 .caab.ababab 9.32/2.59 rule caab -> aaacca at position 0 9.32/2.59 .aaacca.ababab 9.32/2.59 rule caab -> aaacca at position 4 9.32/2.59 .aaacaaacca.abab 9.32/2.59 rule a -> b at position 6 9.32/2.59 .aaacaabcca.abab 9.32/2.59 rule caab -> aaacca at position 8 9.32/2.59 .aaacaabcaaacca.ab 9.32/2.59 rule a -> b at position 10 9.32/2.59 .aaacaabcaabcca.ab 9.32/2.59 rule caab -> aaacca at position 7 9.32/2.59 .aaacaabaaaccacca.ab 9.32/2.59 rule a -> b at position 8 9.32/2.59 .aaacaababaccacca.ab 9.32/2.59 rule caab -> aaacca at position 14 9.32/2.59 .aaacaababaccacaaacca. 9.32/2.59 rule a -> b at position 16 9.32/2.59 .aaacaababaccacaabcca. 9.32/2.59 rule caab -> aaacca at position 13 9.32/2.59 .aaacaababaccaaaaccacca. 9.32/2.59 rule a -> b at position 14 9.32/2.59 .aaacaababaccaabaccacca. 9.32/2.59 rule caab -> aaacca at position 11 9.32/2.59 .aaacaababacaaaccaaccacca. 9.32/2.59 rule a -> b at position 13 9.32/2.59 .aaacaababacaabccaaccacca. 9.32/2.59 rule caab -> aaacca at position 10 9.32/2.59 .aaacaababaaaaccaccaaccacca. 9.32/2.59 rule a -> b at position 10 9.32/2.59 .aaacaabababaaccaccaaccacca. 9.32/2.59 rule a -> b at position 12 9.32/2.59 .aaacaababababccaccaaccacca. 9.40/2.63 EOF