@User Thanks for your suggestions. The simulation results shown above are when you select only Ngspice (Without batch mode) from menu "configure simulators and tools" in the xschem, even this is running fine at my end too, but when the Ngspice batch mode is selected the issue of never-ending simulation comes into the picture always (means so far). The situation with the batch mode is the same. I request that we could meet through google meet so that I may show you the real problem at my end if the time permits you. Best Regards.