(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f0)) (VAR A B) (RULES f2(A, B) -> Com_1(f3(A, 1)) [ -B >= 0 /\ B >= 0 /\ 0 >= A ] f0(A, B) -> Com_1(f2(A, 0)) f2(A, B) -> Com_1(f2(A - 1, B)) [ -B >= 0 /\ B >= 0 /\ A >= 1 ] )