There is provision of an information processing device for processing three-dimensional information representing a three-dimensional shape of a solid object to be modeled by a solid object modeling device configured to model the solid object by depositing a plurality of layers each of which is formed by discharging the filamentary molding material on the flat surface. The information processing device is configured to acquire the three-dimensional information, generate a plurality of pieces of layer information corresponding to the respective layers of the filamentary molding materials, by slicing the three-dimensional information, generate deposition information used for depositing the filamentary molding material from the layer information, generate gap region information representing a gap region to be formed between the filamentary molding materials based on the deposition information, and generate discharging information for controlling discharge of the filamentary molding material, in accordance with the deposition information and the gap region information.