that there is no dependency between jcl files constituting the base file set 106 obtained as a result of the automatic deduction or that dependencies between the jcl files have fully been solved guarantee of integrity of deduction a jcl file dependency output section 109 sends the jcl file group base file set 106 obtained as a result of the automatic deduction to a jcl intermediate file converter 111 further the jcl file dependency output section 109 displays an alarm indicating that there is a problem in the dependency between elements of the logical expression unsolved file set 107 the entire configuration of the present invention is shown in fig1 as shown in fig1 an apparatus according to the present embodiment includes a first storage unit 101 that stores a jcl file group to be converted a jcl file input section 103 that reads out the jcl file group to be converted from the first storage unit 101 a dependency analyzer 105 that analyzes the jcl file group to grasp dependencies between the jcl files separates the jcl files into two sets and develops them on a memory a dependency solving unit 108 that performs automatic deduction using the separated two sets a jcl file dependency output section 109 that sends a base set obtained as a result of the automatic deduction to a jcl intermediate file converter 111 and displays an alarm concerning elements of the logical expression file set a jcl intermediate file converter 111 that converts the jcl file group transmitted from the jcl file dependency output section 109 into an intermediate file group and an intermediate file job network converter 113 that converts the intermediate file into a job network and stores the job network in a second.