generate netlist...
      ...successful.
compose simulator input file...
      ...successful.
start simulator if needed...
      ...successful.
simulate...
reading simulation data...
      ...successful.
generate netlist...
      ...successful.
compose simulator input file...
      ...successful.
start simulator if needed...
      ...successful.
simulate...
reading simulation data...
      ...successful.
generate netlist...
      ...successful.
compose simulator input file...
      ...successful.
start simulator if needed...
      ...successful.
simulate...
reading simulation data...
      ...successful.
