(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS f3)) (VAR A B C) (RULES f2(A, B, C) -> Com_1(f2(-B + A, B + 1, C)) [ B - 1 >= 0 /\ A >= 1 ] f3(A, B, C) -> Com_1(f2(A, B, C)) [ B >= 1 ] f2(A, B, C) -> Com_1(f4(A, B, D)) [ B - 1 >= 0 /\ 0 >= A ] f3(A, B, C) -> Com_1(f4(A, B, D)) [ 0 >= B ] )