{HEAD ~ Data} for determining a limit value of {TAIL ~ the trace range} of a model are stored in a memory and the stored data are read out therefrom by a processor to calculate the limit value of the trace range 
{ HEAD ~ Data } for determining a limit value of { TAIL ~ the trace range } of a model are stored in a memory and the stored data are read out therefrom by a processor to calculate the limit value of the trace range
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH