(GOAL COMPLEXITY) (STARTTERM (FUNCTIONSYMBOLS start)) (VAR A B C) (RULES zip3(A, B, C) -> Com_1(zip3(A - 1, B - 1, C - 1)) [ A >= 1 /\ B >= 1 /\ C >= 1 ] start(A, B, C) -> Com_1(zip3(A, B, C)) )