1. A computer readable storage medium for storing a structure analytic program used to direct a computer to perform process of analyzing a structure of a circuit of circuit design data relating to the circuit configured by a plurality of elements of a circuit described in a hardware description language, comprising: an acquiring process of obtaining the circuit design data; a database structuring process of structuring a structure analyzing database based on the circuit design data; a database replicating process of replicating the structure analyzing database; an element deleting process of deleting a predetermined element in the elements configuring the circuit indicated by the replicate database from the replicate database that is the replicated structure analyzing database; and a structure analyzing process of performing the structure analysis on the replicate database from which the element is deleted in the element deleting process.