A method including receiving, for respective terminals, wiring enable/disable information which sets a region where a connection of a wiring line is enabled and a region where a connection of a wiring line is disabled, and storing the wiring enable/disable information, and determining, using the wiring enable/disable information, whether a connection of a wiring line to a predetermined portion of a terminal of an element is enabled, and when the connection of the wiring line is enabled, executing the connection, wherein the wiring enable/disable information sets wiring enable regions at two end portions of the terminal, sets a wiring disable region at a central portion of the terminal except the two end portions, and sets an interval between either end face of the terminal and another wiring line different in longitudinal direction from the terminal to a predetermined interval not smaller than a minimum interval defined by a design rule.