Of course they would be classified - everyone who completes X% of the winner's laps is classified, as we saw recently with Trulli & Chandhok in Monaco, who were classfied despite crashing out before the end. The only reason why they wouldn't be is if their car was deemed illegal, and they were DQed as a result, but that applies equally to ALL the classified finishers. (Although it would be interesting to see the stewards' reaction to a driver outright destroying his car on the slow-down lap to prevent it being scruitineered properly...)