(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f1)) (VAR A B) (RULES f1(A,B) -> Com_1(f2(A,B)) :|: 0 >= A + B + 1 && A >= 1 f2(A,B) -> Com_1(f2(A - B,B)) :|: A >= 0 f2(A,B) -> Com_1(f3(A,B)) :|: 0 >= A + 1 )