(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f1)) (VAR A B C D) (RULES f0(A,B,C) -> Com_1(f2(A,D,C)) :|: 0 >= A f0(A,B,C) -> Com_1(f0(A + C,B,-1 + C)) :|: A >= 1 f1(A,B,C) -> Com_1(f0(A,B,C)) )