static File createSuffixTreeForLCArchive(File archiveFile, File treeFile) {
  print("Reading " + archiveFile);
  L<Int> encoding = LineCompReader(archiveFile).encoding();
  int endSymbol = -2;
  time "Make Ukkonen tree" {
    UkkonenIntSuffixTree uTree = new(encoding);
    uTree.addChar(endSymbol);
  }
  IntSuffixTree_managed tree = ukkonenToIntSuffixTree_managed(uTree);
  tree.saveToFile(treeFile);
  ret treeFile;
}