SUBSTRATE PROCESSING APPARATUS, METHOD OF MANUFACTURING SEMICONDUCTOR DEVICE, AND PROGRAM

There is provided a technique that includes: a boat including plural slots to hold at least one substrate; a process furnace that processes the at least one substrate held in the boat; a boat elevator that raises and lowers the boat; a transfer device that transfers the at least one substrate between plural carriers where the at least one substrate is stored and the boat; and a controller capable of controlling the boat elevator and the transfer device, wherein the controller sets plural positions where the transfer device transfers the at least one substrate to the boat elevator, and select the positions to minimize a number of shifts among the positions of the boat elevator or total time taken during the shifts.