An information processing device includes a memory; and a processor coupled to the memory and configured to: acquire information including storage destinations for modules of a plurality of software installed in the device, and attribute values for attribute items of the plurality of software from each of a plurality of programs; uniquely identify the plurality of software indicated by the acquired information based on the storage destinations for the modules of the plurality of software indicated by the acquired information; calculate an appearance frequency of the plurality of software in the acquired information for a combination of each of the plurality of programs and each of the attribute values; and determine a correspondence relationship between each of the uniquely identified plurality of software and one of the plurality of programs from which information on the plurality of software is acquired, based on the calculated frequency of appearance.