Program: 33011
Project: 33011
Buggy source:
static Set<Ngram> gather(Config config,ESIndex index,String[] ids) throws Exception {
  File metaDataFolder=new File(config.getString("String_Node_Str"),"String_Node_Str");
  metaDataFolder.mkdirs();
  Multiset<Ngram> allNgrams=ConcurrentHashMultiset.create();
  List<Integer> ns=config.getIntegers("String_Node_Str");
  int minDf=config.getInt("String_Node_Str");
  List<String> fields=config.getStrings("String_Node_Str");
  List<Integer> slops=config.getIntegers("String_Node_Str");
  for (  String field : fields) {
    for (    int n : ns) {
      for (      int slop : slops) {
        if (n == 1 && slop > 0) {
          continue;
        }
        System.out.println("String_Node_Str" + n + "String_Node_Str"+ field+ "String_Node_Str"+ slop+ "String_Node_Str"+ minDf);
        NgramTemplate template=new NgramTemplate(field,n,slop);
        Multiset<Ngram> ngrams=NgramEnumerator.gatherNgram(index,ids,template,minDf);
        System.out.println("String_Node_Str" + ngrams.elementSet().size() + "String_Node_Str");
        int newCounter=0;
        for (        Multiset.Entry<Ngram> entry : ngrams.entrySet()) {
          Ngram ngram=entry.getElement();
          int count=entry.getCount();
          if (interesting(allNgrams,ngram,count)) {
            allNgrams.add(ngram,count);
            newCounter+=1;
          }
        }
        System.out.println(newCounter + "String_Node_Str");
      }
    }
  }
  System.out.println("String_Node_Str" + allNgrams.elementSet().size() + "String_Node_Str");
  BufferedWriter bufferedWriter=new BufferedWriter(new FileWriter(new File(metaDataFolder,"String_Node_Str")));
  for (  Multiset.Entry<Ngram> ngramEntry : allNgrams.entrySet()) {
    bufferedWriter.write(ngramEntry.getElement().toString());
    bufferedWriter.write("String_Node_Str");
    bufferedWriter.write("String_Node_Str" + ngramEntry.getCount());
    bufferedWriter.newLine();
  }
  bufferedWriter.close();
  Set<Ngram> uniques=new HashSet<>();
  uniques.addAll(allNgrams.elementSet());
  Serialization.serialize(uniques,new File(metaDataFolder,"String_Node_Str"));
  return allNgrams.elementSet();
}

Fixed version (ground truth):
static Set<Ngram> gather(Config config,ESIndex index,String[] ids) throws Exception {
  File metaDataFolder=new File(config.getString("String_Node_Str"),"String_Node_Str");
  metaDataFolder.mkdirs();
  Multiset<Ngram> allNgrams=ConcurrentHashMultiset.create();
  List<Integer> ns=config.getIntegers("String_Node_Str");
  int minDf=config.getInt("String_Node_Str");
  List<String> fields=config.getStrings("String_Node_Str");
  List<Integer> slops=config.getIntegers("String_Node_Str");
  for (  String field : fields) {
    for (    int n : ns) {
      for (      int slop : slops) {
        System.out.println("String_Node_Str" + n + "String_Node_Str"+ field+ "String_Node_Str"+ slop+ "String_Node_Str"+ minDf);
        NgramTemplate template=new NgramTemplate(field,n,slop);
        Multiset<Ngram> ngrams=NgramEnumerator.gatherNgram(index,ids,template,minDf);
        System.out.println("String_Node_Str" + ngrams.elementSet().size() + "String_Node_Str");
        int newCounter=0;
        for (        Multiset.Entry<Ngram> entry : ngrams.entrySet()) {
          Ngram ngram=entry.getElement();
          int count=entry.getCount();
          if (interesting(allNgrams,ngram,count)) {
            allNgrams.add(ngram,count);
            newCounter+=1;
          }
        }
        System.out.println(newCounter + "String_Node_Str");
      }
    }
  }
  System.out.println("String_Node_Str" + allNgrams.elementSet().size() + "String_Node_Str");
  BufferedWriter bufferedWriter=new BufferedWriter(new FileWriter(new File(metaDataFolder,"String_Node_Str")));
  for (  Multiset.Entry<Ngram> ngramEntry : allNgrams.entrySet()) {
    bufferedWriter.write(ngramEntry.getElement().toString());
    bufferedWriter.write("String_Node_Str");
    bufferedWriter.write("String_Node_Str" + ngramEntry.getCount());
    bufferedWriter.newLine();
  }
  bufferedWriter.close();
  Set<Ngram> uniques=new HashSet<>();
  uniques.addAll(allNgrams.elementSet());
  Serialization.serialize(uniques,new File(metaDataFolder,"String_Node_Str"));
  return allNgrams.elementSet();
}