(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f3)) (VAR A B) (RULES f0(A, B) -> Com_1(f0(A - 1, C)) [ 0 >= C ] f0(A, B) -> Com_1(f0(A + 1, C)) [ C >= 1 ] f3(A, B) -> Com_1(f0(2, B)) )