Program: 51210
Project: 51210
Buggy source:
private void readNext(boolean lookingForAttributes) throws IOException {
  if (!lookingForAttributes) {
    eventQueue.poll();
  }
  while (eventQueue.isEmpty() || lookingForAttributes) {
    org.codehaus.jackson.JsonToken jtok;
    while (true) {
      parser.nextToken();
      jtok=parser.getCurrentToken();
      final ProcessingInfo pi=peek(processingStack);
switch (jtok) {
case FIELD_NAME:
        String currentName=parser.getCurrentName();
      boolean currentIsAttribute=!("String_Node_Str".equals(currentName)) && properJAXBVersion ? attrsExpected.contains(currentName) : !elemsExpected.contains(currentName);
    if (lookingForAttributes && currentIsAttribute) {
      parser.nextToken();
      if (valueTokens.contains(parser.getCurrentToken())) {
        eventQueue.peek().addAttribute(getQNameForLocName(currentName,qNamesOfExpAttrs),parser.getText());
      }
 else {
        System.out.println(String.format("String_Node_Str",currentName));
        throw new IOException("String_Node_Str");
      }
    }
 else {
      lookingForAttributes=false;
      if (!("String_Node_Str".equals(currentName))) {
        final QName currentQName=getQNameForTagLocName(currentName);
        eventQueue.add(new StartElementEvent(currentQName,new StaxLocation(parser.getCurrentLocation())));
        processingStack.add(new ProcessingInfo(currentQName,false,true));
        return;
      }
 else {
        parser.nextToken();
        if (valueTokens.contains(parser.getCurrentToken())) {
          eventQueue.add(new CharactersEvent(parser.getText(),new StaxLocation(parser.getCurrentLocation())));
          return;
        }
 else {
          throw new IOException("String_Node_Str");
        }
      }
    }
  break;
case START_OBJECT:
if (pi == null) {
  eventQueue.add(new StartDocumentEvent(new StaxLocation(0,0,0)));
  return;
}
if (pi.isArray && !pi.isFirstElement) {
eventQueue.add(new StartElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
return;
}
 else {
pi.isFirstElement=false;
}
break;
case END_OBJECT:
lookingForAttributes=false;
eventQueue.add(new EndElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
if (!pi.isArray) {
pop(processingStack);
}
if (processingStack.isEmpty()) {
eventQueue.add(new EndDocumentEvent(new StaxLocation(parser.getCurrentLocation())));
}
return;
case VALUE_FALSE:
case VALUE_NULL:
case VALUE_NUMBER_FLOAT:
case VALUE_NUMBER_INT:
case VALUE_TRUE:
case VALUE_STRING:
if (!pi.isFirstElement) {
eventQueue.add(new StartElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
}
 else {
pi.isFirstElement=false;
}
if (jtok != jtok.VALUE_NULL) {
eventQueue.add(new CharactersEvent(parser.getText(),new StaxLocation(parser.getCurrentLocation())));
}
eventQueue.add(new EndElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
if (!pi.isArray) {
pop(processingStack);
}
if (processingStack.isEmpty()) {
eventQueue.add(new EndDocumentEvent(new StaxLocation(parser.getCurrentLocation())));
}
lookingForAttributes=false;
return;
case START_ARRAY:
peek(processingStack).isArray=true;
break;
case END_ARRAY:
pop(processingStack);
lookingForAttributes=false;
}
}
}
}

Fixed version (ground truth):
private void readNext(boolean lookingForAttributes) throws IOException {
  if (!lookingForAttributes) {
    eventQueue.poll();
  }
  while (eventQueue.isEmpty() || lookingForAttributes) {
    org.codehaus.jackson.JsonToken jtok;
    while (true) {
      parser.nextToken();
      jtok=parser.getCurrentToken();
      final ProcessingInfo pi=peek(processingStack);
switch (jtok) {
case FIELD_NAME:
        String currentName=parser.getCurrentName();
      if (attrsWithPrefix && currentName.startsWith("String_Node_Str")) {
        currentName=currentName.substring(1);
      }
    boolean currentIsAttribute=!("String_Node_Str".equals(currentName)) && properJAXBVersion ? attrsExpected.contains(currentName) : !elemsExpected.contains(currentName);
  if (lookingForAttributes && currentIsAttribute) {
    parser.nextToken();
    if (valueTokens.contains(parser.getCurrentToken())) {
      eventQueue.peek().addAttribute(getQNameForLocName(currentName,qNamesOfExpAttrs),parser.getText());
    }
 else {
      System.out.println(String.format("String_Node_Str",currentName));
      throw new IOException("String_Node_Str");
    }
  }
 else {
    lookingForAttributes=false;
    if (!("String_Node_Str".equals(currentName))) {
      final QName currentQName=getQNameForTagLocName(currentName);
      eventQueue.add(new StartElementEvent(currentQName,new StaxLocation(parser.getCurrentLocation())));
      processingStack.add(new ProcessingInfo(currentQName,false,true));
      return;
    }
 else {
      parser.nextToken();
      if (valueTokens.contains(parser.getCurrentToken())) {
        eventQueue.add(new CharactersEvent(parser.getText(),new StaxLocation(parser.getCurrentLocation())));
        return;
      }
 else {
        throw new IOException("String_Node_Str");
      }
    }
  }
break;
case START_OBJECT:
if (pi == null) {
eventQueue.add(new StartDocumentEvent(new StaxLocation(0,0,0)));
return;
}
if (pi.isArray && !pi.isFirstElement) {
eventQueue.add(new StartElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
return;
}
 else {
pi.isFirstElement=false;
}
break;
case END_OBJECT:
lookingForAttributes=false;
eventQueue.add(new EndElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
if (!pi.isArray) {
pop(processingStack);
}
if (processingStack.isEmpty()) {
eventQueue.add(new EndDocumentEvent(new StaxLocation(parser.getCurrentLocation())));
}
return;
case VALUE_FALSE:
case VALUE_NULL:
case VALUE_NUMBER_FLOAT:
case VALUE_NUMBER_INT:
case VALUE_TRUE:
case VALUE_STRING:
if (!pi.isFirstElement) {
eventQueue.add(new StartElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
}
 else {
pi.isFirstElement=false;
}
if (jtok != jtok.VALUE_NULL) {
eventQueue.add(new CharactersEvent(parser.getText(),new StaxLocation(parser.getCurrentLocation())));
}
eventQueue.add(new EndElementEvent(pi.name,new StaxLocation(parser.getCurrentLocation())));
if (!pi.isArray) {
pop(processingStack);
}
if (processingStack.isEmpty()) {
eventQueue.add(new EndDocumentEvent(new StaxLocation(parser.getCurrentLocation())));
}
lookingForAttributes=false;
return;
case START_ARRAY:
peek(processingStack).isArray=true;
break;
case END_ARRAY:
pop(processingStack);
lookingForAttributes=false;
}
}
}
}