if ( ( first >= 0 ) && ( counter == 0 ) && ( i > 0 ) ) {
throw new RIOException( "attempt to analyze first gene tree #" + first + " in a set of " + i );
}
if ( ( first >= 0 ) && ( counter == 0 ) && ( i > 0 ) ) {
throw new RIOException( "attempt to analyze first gene tree #" + first + " in a set of " + i );
}