This document discusses, among other things, systems, devices, and methods of disabling an automatic generator starting actuator, such as used with a fuel-powered AC power generator providing AC electrical power to a recreational vehicle or other vehicle. In a normal mode, the internal data and the inverted internal data have logic states corresponding to input data, while the digital data and the inverted digital data have logic states corresponding to the internal data and the inverted internal data. The subterranean formation model is used to predict a response of each rock block to one or more forces acting on the rock block during an injection treatment for the subterranean formation.