KnowledgeBase rootState = new BasicKB();
for (GroundFact ground : currentState_.getIterable()) {
rootState.setTrue(ground);
}
// ... and the proof contex to go with it
ProofContext rootContext = new ProofContext(rootState, parser_);
// Run the minimax search.
try {
searchResult = minimaxSearch(rootState, rootContext, 0);