cout<<"| area of inv_x1= "<<library->getCell(LIB::Name("inv_x1"))->getAttribute(LIB::Name("area"))->valueAsString()<<endl;
cout<<"| timing intrinsic_rise of nq of inv_x1= "<<library->getCell(LIB::Name("inv_x1"))->getPin(LIB::Name("nq"))->getTiming(LIB::Name("i"))->getAttribute(LIB::Name("intrinsic_rise"))->valueAsString()<<endl;