A division position search unit searches for a division position on an edge present on a path from a second end point, which is one of plural end points of a tree structure of a three-dimensional object other than a first end point, toward the first end point, and at the division position, the size of a downstream tree structure spreading from the division position toward a direction opposite to the first end point changing from a size within an output range of a three-dimensional object creation apparatus to a size exceeding the output range. Then, a division unit divides, at the division position, the three-dimensional object into a division object the size of which is within the output range and a remaining object. An output unit outputs the division object to the three-dimensional object creation apparatus.