By JEFF CARLTON, Associated Press Jeff Carlton, Associated Press Tue Jan 4, 6:30 pm ET DALLAS A Texas man declared innocent Tuesday after 30 years in prison had at least two chances to make parole and be set free if only he would admit he was a sex offender. But Cornelius Dupree Jr. refused to do so, doggedly maintaining his innocence in a 1979 rape and robbery, in the process serving more time for a crime he didn't commit than any other Texas inmate exonerated by DNA evidence. "Whatever your truth is, you have to stick with it," Dupree, 51, said Tuesday, minutes after a Dallas judge overturned his conviction. Nationally, only two others exonerated by DNA evidence spent more time in prison, according to the Innocence Project, a New York legal center that specializes in wrongful conviction cases and represented Dupree. James Bain was wrongly imprisoned for 35 years in Florida, and Lawrence McKinney spent more than 31 years in a Tennessee prison. Dupree was sentenced to 75 years in prison in 1980 for the rape and robbery of a 26-year-old Dallas woman a year earlier. He was released in July on mandatory supervision, and lived under house arrest until October. About a week after his release, DNA test results came back proving his innocence in the sexual assault. A day after his release, Dupree married his fiancee, Selma. The couple met two decades ago while he was in prison.