(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f0)) (VAR A B C D E F) (RULES f0(A,B,C) -> Com_1(f1(A,B,C)) f1(A,B,C) -> Com_1(f1(E,F,B)) :|: A >= 1 && D >= 1 && B = 0 )