Program: 11238
Project: 11238
Buggy source:
public Query parse(String aQuery,String aSearchField) throws IOException {
  QueryTokenizer theTokenizer=new QueryTokenizer(aQuery);
  BooleanQuery theResult=new BooleanQuery();
  if (!theTokenizer.getNotRequiredTerms().isEmpty()) {
    List<SpanQuery> theSpans=new ArrayList<>();
    for (    String theTerm : theTokenizer.getRequiredTerms()) {
      if (QueryUtils.isWildCard(theTerm)) {
        theSpans.add(new SpanMultiTermQueryWrapper<>(new WildcardQuery(new Term(aSearchField,theTerm))));
      }
 else       if (QueryUtils.isFuzzy(theTerm)) {
        theSpans.add(new SpanMultiTermQueryWrapper<>(new FuzzyQuery(new Term(aSearchField,theTerm))));
      }
 else {
        String theTokenizedTerm=toToken(theTerm,aSearchField);
        if (!StringUtils.isEmpty(theTokenizedTerm)) {
          theSpans.add(new SpanTermQuery(new Term(aSearchField,theTokenizedTerm)));
        }
      }
    }
    SpanQuery theExactMatchQuery=new SpanNearQuery(theSpans.toArray(new SpanQuery[theSpans.size()]),0,true);
    theExactMatchQuery.setBoost(61);
    theResult.add(theExactMatchQuery,BooleanClause.Occur.SHOULD);
    int theMaxEditDistance=10;
    for (int theSlop=0; theSlop < theMaxEditDistance; theSlop++) {
      SpanQuery theNearQuery=new SpanNearQuery(theSpans.toArray(new SpanQuery[theSpans.size()]),theSlop,false);
      theNearQuery.setBoost(50 + theMaxEditDistance - theSlop);
      theResult.add(theNearQuery,BooleanClause.Occur.SHOULD);
    }
    for (    String theTerm : theTokenizer.getRequiredTerms()) {
      if (QueryUtils.isWildCard(theTerm)) {
        theResult.add(new WildcardQuery(new Term(aSearchField,toToken(theTerm,aSearchField))),BooleanClause.Occur.MUST);
      }
 else       if (QueryUtils.isFuzzy(theTerm)) {
        theResult.add(new FuzzyQuery(new Term(aSearchField,theTerm)),BooleanClause.Occur.MUST);
      }
 else {
        String theTokenizedTerm=toToken(theTerm,aSearchField);
        if (!StringUtils.isEmpty(theTokenizedTerm)) {
          theResult.add(new TermQuery(new Term(aSearchField,theTokenizedTerm)),BooleanClause.Occur.MUST);
        }
      }
    }
  }
  for (  String theTerm : theTokenizer.getNotRequiredTerms()) {
    if (QueryUtils.isWildCard(theTerm)) {
      theResult.add(new WildcardQuery(new Term(aSearchField,theTerm)),BooleanClause.Occur.MUST_NOT);
    }
 else     if (QueryUtils.isFuzzy(theTerm)) {
      theResult.add(new FuzzyQuery(new Term(aSearchField,theTerm)),BooleanClause.Occur.MUST_NOT);
    }
 else {
      String theTokenizedTerm=toToken(theTerm,aSearchField);
      if (!StringUtils.isEmpty(theTokenizedTerm)) {
        theResult.add(new TermQuery(new Term(aSearchField,theTokenizedTerm)),BooleanClause.Occur.MUST_NOT);
      }
    }
  }
  return theResult;
}

Fixed version (ground truth):
public Query parse(String aQuery,String aSearchField) throws IOException {
  QueryTokenizer theTokenizer=new QueryTokenizer(aQuery);
  BooleanQuery theResult=new BooleanQuery();
  if (!theTokenizer.getRequiredTerms().isEmpty()) {
    List<SpanQuery> theSpans=new ArrayList<>();
    for (    String theTerm : theTokenizer.getRequiredTerms()) {
      if (QueryUtils.isWildCard(theTerm)) {
        theSpans.add(new SpanMultiTermQueryWrapper<>(new WildcardQuery(new Term(aSearchField,theTerm))));
      }
 else       if (QueryUtils.isFuzzy(theTerm)) {
        theSpans.add(new SpanMultiTermQueryWrapper<>(new FuzzyQuery(new Term(aSearchField,theTerm))));
      }
 else {
        String theTokenizedTerm=toToken(theTerm,aSearchField);
        if (!StringUtils.isEmpty(theTokenizedTerm)) {
          theSpans.add(new SpanTermQuery(new Term(aSearchField,theTokenizedTerm)));
        }
      }
    }
    SpanQuery theExactMatchQuery=new SpanNearQuery(theSpans.toArray(new SpanQuery[theSpans.size()]),0,true);
    theExactMatchQuery.setBoost(61);
    theResult.add(theExactMatchQuery,BooleanClause.Occur.SHOULD);
    int theMaxEditDistance=10;
    for (int theSlop=0; theSlop < theMaxEditDistance; theSlop++) {
      SpanQuery theNearQuery=new SpanNearQuery(theSpans.toArray(new SpanQuery[theSpans.size()]),theSlop,false);
      theNearQuery.setBoost(50 + theMaxEditDistance - theSlop);
      theResult.add(theNearQuery,BooleanClause.Occur.SHOULD);
    }
    addToBooleanQuery(theTokenizer.getRequiredTerms(),aSearchField,theResult,BooleanClause.Occur.MUST);
  }
  addToBooleanQuery(theTokenizer.getNotRequiredTerms(),aSearchField,theResult,BooleanClause.Occur.MUST_NOT);
  return theResult;
}