Program: 140892
Project: 140892
Buggy source:
public void detectAndMergeMultiwords(MultiwordChecker multiwordChecker){
  List<Word> mergedWords=multiwordChecker.checkMultiwords(sentenceWords);
  for (  Word mergedWord : mergedWords) {
    if (mergedWord.isMultiword()) {
      List<Word> composingWords=mergedWord.getComposingWords();
      for (      Word innerWord : composingWords) {
        Iterator<WordToWordRelation> governorRels=governorWordRelationMap.get(innerWord.getSpanSignature()).iterator();
        while (governorRels.hasNext()) {
          WordToWordRelation rel=governorRels.next();
          rel.setSourceWord(mergedWord);
          if (!composingWords.contains(rel.getTargetWord()) && !rel.getSourceWord().isSameWordInTheSentenceThan(rel.getTargetWord())) {
            governorWordRelationMap.put(mergedWord.getSpanSignature(),rel);
          }
        }
        log.debug("String_Node_Str" + innerWord);
        governorWordRelationMap.removeAll(innerWord);
        Iterator<WordToWordRelation> dependentRels=dependentWordRelationMap.get(innerWord.getSpanSignature()).iterator();
        while (dependentRels.hasNext()) {
          WordToWordRelation rel=dependentRels.next();
          rel.setTargetWord(mergedWord);
          if (!composingWords.contains(rel.getSourceWord()) && !rel.getSourceWord().isSameWordInTheSentenceThan(rel.getTargetWord())) {
            dependentWordRelationMap.put(mergedWord.getSpanSignature(),rel);
          }
        }
        log.debug("String_Node_Str" + innerWord);
        dependentWordRelationMap.removeAll(innerWord);
      }
    }
  }
  this.sentenceWords=mergedWords;
  populateSpanToWorNumberMap();
}

Fixed version (ground truth):
public void detectAndMergeMultiwords(MultiwordChecker multiwordChecker){
  List<Word> mergedWords=multiwordChecker.checkMultiwords(sentenceWords);
  for (  Word mergedWord : mergedWords) {
    if (mergedWord.isMultiword()) {
      List<Word> composingWords=mergedWord.getComposingWords();
      for (      Word innerWord : composingWords) {
        Iterator<WordToWordRelation> governorRels=governorWordRelationMap.get(innerWord.getSpanSignature()).iterator();
        while (governorRels.hasNext()) {
          WordToWordRelation rel=governorRels.next();
          rel.setSourceWord(mergedWord);
          if (!composingWords.contains(rel.getTargetWord()) && !rel.getSourceWord().isSameWordInTheSentenceThan(rel.getTargetWord())) {
            governorWordRelationMap.put(mergedWord.getSpanSignature(),rel);
          }
        }
        log.debug("String_Node_Str" + innerWord);
        governorWordRelationMap.removeAll(innerWord);
        Iterator<WordToWordRelation> dependentRels=dependentWordRelationMap.get(innerWord.getSpanSignature()).iterator();
        while (dependentRels.hasNext()) {
          WordToWordRelation rel=dependentRels.next();
          rel.setTargetWord(mergedWord);
          if (!composingWords.contains(rel.getSourceWord()) && !rel.getSourceWord().isSameWordInTheSentenceThan(rel.getTargetWord())) {
            dependentWordRelationMap.put(mergedWord.getSpanSignature(),rel);
          }
        }
        log.debug("String_Node_Str" + innerWord);
        dependentWordRelationMap.removeAll(innerWord);
      }
    }
  }
  this.sentenceWords=mergedWords;
  populateSpanToWordNumberMap();
}