Program: 53583
Project: 53583
Buggy source:
public String createDumpMessage(TThreadDump threadDump){
  TThreadState threadState=getThreadState(threadDump.getThreadState());
  StringBuilder message=new StringBuilder("String_Node_Str" + threadDump.getThreadName() + "String_Node_Str");
  String hexStringThreadId=Long.toHexString(threadDump.getThreadId());
  message.append("String_Node_Str" + hexStringThreadId);
  message.append("String_Node_Str" + threadState.name());
  if (!StringUtils.isBlank(threadDump.getLockName())) {
    message.append("String_Node_Str").append(threadDump.getLockName());
  }
  if (!StringUtils.isBlank(threadDump.getLockOwnerName())) {
    message.append("String_Node_Str").append(threadDump.getLockOwnerName()).append("String_Node_Str").append(threadDump.getLockOwnerId());
  }
  if (threadDump.isSuspended()) {
    message.append("String_Node_Str");
  }
  if (threadDump.isInNative()) {
    message.append("String_Node_Str");
  }
  message.append(LINE_SEPARATOR);
  for (int i=0; i < threadDump.getStackTraceSize(); i++) {
    String stackTrace=threadDump.getStackTrace().get(i);
    message.append(TAB_SEPARATOR + "String_Node_Str").append(stackTrace);
    message.append(LINE_SEPARATOR);
    if (i == 0 && !StringUtils.isBlank(threadDump.getLockName())) {
switch (threadState) {
case BLOCKED:
        message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
      message.append(LINE_SEPARATOR);
    break;
case WAITING:
  message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
message.append(LINE_SEPARATOR);
break;
case TIMED_WAITING:
message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
message.append(LINE_SEPARATOR);
break;
default :
}
}
if (threadDump.getLockedMonitors() != null) {
for (TMonitorInfo lockedMonitor : threadDump.getLockedMonitors()) {
if (lockedMonitor.getStackDepth() == i) {
message.append(TAB_SEPARATOR + "String_Node_Str").append(lockedMonitor.getStackFrame());
message.append(LINE_SEPARATOR);
}
}
}
}
List<String> lockedSynchronizers=threadDump.getLockedSynchronizers();
if (lockedSynchronizers != null) {
if (!lockedSynchronizers.isEmpty()) {
message.append(LINE_SEPARATOR + TAB_SEPARATOR + "String_Node_Str").append(lockedSynchronizers.size());
message.append(LINE_SEPARATOR);
for (String lockedSynchronizer : lockedSynchronizers) {
message.append(TAB_SEPARATOR + "String_Node_Str").append(lockedSynchronizer);
message.append(LINE_SEPARATOR);
}
}
}
message.append(LINE_SEPARATOR);
return message.toString();
}

Fixed version (ground truth):
public String createDumpMessage(TThreadDump threadDump){
  TThreadState threadState=getThreadState(threadDump.getThreadState());
  StringBuilder message=new StringBuilder("String_Node_Str" + threadDump.getThreadName() + "String_Node_Str");
  String hexStringThreadId=Long.toHexString(threadDump.getThreadId());
  message.append("String_Node_Str" + hexStringThreadId);
  message.append("String_Node_Str" + threadState.name());
  if (!StringUtils.isBlank(threadDump.getLockName())) {
    message.append("String_Node_Str").append(threadDump.getLockName());
  }
  if (!StringUtils.isBlank(threadDump.getLockOwnerName())) {
    message.append("String_Node_Str").append(threadDump.getLockOwnerName()).append("String_Node_Str").append(threadDump.getLockOwnerId());
  }
  if (threadDump.isSuspended()) {
    message.append("String_Node_Str");
  }
  if (threadDump.isInNative()) {
    message.append("String_Node_Str");
  }
  message.append(LINE_SEPARATOR);
  for (int i=0; i < threadDump.getStackTraceSize(); i++) {
    String stackTrace=threadDump.getStackTrace().get(i);
    message.append(TAB_SEPARATOR + "String_Node_Str").append(stackTrace);
    message.append(LINE_SEPARATOR);
    if (i == 0 && !StringUtils.isBlank(threadDump.getLockName())) {
switch (threadState) {
case BLOCKED:
        message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
      message.append(LINE_SEPARATOR);
    break;
case WAITING:
  message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
message.append(LINE_SEPARATOR);
break;
case TIMED_WAITING:
message.append(TAB_SEPARATOR + "String_Node_Str").append(threadDump.getLockName());
message.append(LINE_SEPARATOR);
break;
default :
}
}
if (threadDump.getLockedMonitors() != null) {
for (TMonitorInfo lockedMonitor : threadDump.getLockedMonitors()) {
if (lockedMonitor.getStackDepth() == i) {
message.append(TAB_SEPARATOR + "String_Node_Str").append(lockedMonitor.getStackFrame());
message.append(LINE_SEPARATOR);
}
}
}
}
List<String> lockedSynchronizers=threadDump.getLockedSynchronizers();
if (!CollectionUtils.isEmpty(lockedSynchronizers)) {
message.append(LINE_SEPARATOR + TAB_SEPARATOR + "String_Node_Str").append(lockedSynchronizers.size());
message.append(LINE_SEPARATOR);
for (String lockedSynchronizer : lockedSynchronizers) {
message.append(TAB_SEPARATOR + "String_Node_Str").append(lockedSynchronizer);
message.append(LINE_SEPARATOR);
}
}
message.append(LINE_SEPARATOR);
return message.toString();
}