Analytical method, analysis program, and the analyzer

Reduced to a predictable timing failure of the system (100) is generated. Analyzer (101), among a plurality of nodes (# 1 to N), the period number of the failed node during the (prd) (Nt) is detected to be 2 [number]. Subsequently, the analysis device (101), based on the number and duration of the detected failed node (prd), to calculate the period number of nodes to fail per unit time after (prd) (NPer), and outputs the number of the failure node a (NPer). System (100) of the operator is viewing the number of failure nodes (NPer), for example, to determine whether to add a node to the system (100). For example, if the number of failed nodes (NPer) is greater than the assumed value of the operator of the system (100), the operator of the system (100) determines that an additional node to the system (100).