The state Department of Human Services has decided to keep a State Hospital treatment program for the criminally acquitted open for another six months. The Partnership Program treats people acquitted because of mental disease or defect. About 70 percent of them were charged with violent crimes including rape and murder. The department`s Behavioral Health Services Division notified Liberty Healthcare Corp. in mid May that it would not renew its three million dollar contract to run the Arkansas Partnership Program. But the groups reached a last-minute agreement to extend the contract for six months at a cost of one point five million dollars.