(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f0)) (VAR A B C) (RULES f0(A, B, C) -> Com_1(f2(A, B, C)) [ A >= 0 ] f2(A, B, C) -> Com_1(f2(A + C, B, C - 2)) f2(A, B, C) -> Com_1(f2(A + B, B - 2, C + 1)) )