didSelectRowAtIndexPath returns wrong IndexPath

You have implemented didDeselectRowAtIndexPath. It will be fired when the row is no longer selected.

When you touch the second row, the first row is no longer selected, so [0, 1] will be shown.
When you touch the first row again, the second row is now no longer selected, so [0, 0] will be shown.

These are totally expected.

Implement didSelectRowAtIndexPath if you need it to respond when the row is selected.

-(void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
    //                                       ^
    ...

    NSLog(@"IndexPath: %@", [indexPath description]);
}