(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f0)) (VAR A B C) (RULES f2(A,B) -> Com_1(f2(A - 1,B)) :|: A >= 1 f0(A,B) -> Com_1(f2(C,B - 1)) :|: B >= 1 f2(A,B) -> Com_1(f2(C,B - 1)) :|: B >= 1 && 0 >= A )