(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f999)) (VAR A B) (RULES f1(A, B) -> Com_1(f2(A - 1, B)) [ B >= 0 /\ A + B - 1 >= 0 /\ A - 1 >= 0 /\ A >= 1 ] f2(A, B) -> Com_1(f2(A - 1, B + 1)) [ B >= 0 /\ A + B >= 0 /\ A >= 0 /\ A >= 1 ] f999(A, B) -> Com_1(f1(1, B - 1)) [ B >= 1 /\ A = 0 ] f1(A, B) -> Com_1(f1(A + 1, B - 1)) [ B >= 0 /\ A + B - 1 >= 0 /\ A - 1 >= 0 /\ B >= 1 ] f2(A, B) -> Com_1(f1(A + 1, B - 1)) [ B >= 0 /\ A + B >= 0 /\ A >= 0 /\ B >= 1 ] )