Program: 186596
Project: 186596
Buggy source:
/** 
 * Get a loop bound from the DFA for a certain loop and call string and merge it with the annotated value.
 * @return The loop bound to be used for further computations
 */
public LoopBound dfaLoopBound(BasicBlock headOfLoopBlock,ExecutionContext eCtx,LoopBound annotatedBound){
  LoopBounds lbAnalysis=project.getDfaLoopBounds();
  if (lbAnalysis == null)   return annotatedBound;
  MethodInfo methodInfo=headOfLoopBlock.getMethodInfo();
  int dfaUpperBound;
  try {
    dfaUpperBound=lbAnalysis.getBound(headOfLoopBlock.getLastInstruction(),eCtx.getCallString());
  }
 catch (  NullPointerException ex) {
    ex.printStackTrace();
    dfaUpperBound=-1;
  }
  if (dfaUpperBound < 0) {
    if (!printedLoopBoundInfoMessage.contains(headOfLoopBlock)) {
      logger.info("String_Node_Str" + methodInfo + "String_Node_Str"+ headOfLoopBlock+ "String_Node_Str"+ annotatedBound);
      printedLoopBoundInfoMessage.add(headOfLoopBlock);
    }
    return annotatedBound;
  }
  LoopBound loopBound;
  if (annotatedBound == null) {
    loopBound=LoopBound.boundedAbove(dfaUpperBound);
    logger.debug("String_Node_Str" + methodInfo + "String_Node_Str");
  }
 else {
    loopBound=annotatedBound.clone();
    loopBound.addBound(LoopBoundExpr.numUpperBound(dfaUpperBound),SymbolicMarker.LOOP_ENTRY);
    long loopUb=annotatedBound.getSimpleLoopBound().upperBound(eCtx);
    if (dfaUpperBound < loopUb) {
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + dfaUpperBound + "String_Node_Str"+ loopUb+ "String_Node_Str"+ methodInfo+ "String_Node_Str"+ headOfLoopBlock);
      }
    }
 else     if (dfaUpperBound > loopUb) {
      logger.warn("String_Node_Str" + dfaUpperBound + "String_Node_Str"+ loopUb+ "String_Node_Str"+ methodInfo);
    }
 else {
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + methodInfo);
      }
    }
  }
  if (!printedLoopBoundInfoMessage.contains(headOfLoopBlock)) {
    logger.info("String_Node_Str" + methodInfo + "String_Node_Str"+ headOfLoopBlock+ "String_Node_Str"+ loopBound+ "String_Node_Str"+ annotatedBound);
    printedLoopBoundInfoMessage.add(headOfLoopBlock);
  }
  return loopBound;
}

Fixed version (ground truth):
/** 
 * Get a loop bound from the DFA for a certain loop and call string and merge it with the annotated value.
 * @return The loop bound to be used for further computations
 */
public LoopBound dfaLoopBound(BasicBlock headOfLoopBlock,ExecutionContext eCtx,LoopBound annotatedBound){
  LoopBounds lbAnalysis=project.getDfaLoopBounds();
  if (lbAnalysis == null)   return annotatedBound;
  MethodInfo methodInfo=headOfLoopBlock.getMethodInfo();
  int dfaUpperBound;
  try {
    dfaUpperBound=lbAnalysis.getBound(headOfLoopBlock.getLastInstruction(),eCtx.getCallString());
  }
 catch (  NullPointerException ex) {
    logger.error("String_Node_Str",ex);
    dfaUpperBound=-1;
  }
  if (dfaUpperBound < 0) {
    if (!printedLoopBoundInfoMessage.contains(headOfLoopBlock)) {
      logger.info("String_Node_Str" + methodInfo + "String_Node_Str"+ headOfLoopBlock+ "String_Node_Str"+ annotatedBound);
      printedLoopBoundInfoMessage.add(headOfLoopBlock);
    }
    return annotatedBound;
  }
  LoopBound loopBound;
  if (annotatedBound == null) {
    loopBound=LoopBound.boundedAbove(dfaUpperBound);
    logger.debug("String_Node_Str" + methodInfo + "String_Node_Str");
  }
 else {
    loopBound=annotatedBound.clone();
    loopBound.addBound(LoopBoundExpr.numUpperBound(dfaUpperBound),SymbolicMarker.LOOP_ENTRY);
    long loopUb=annotatedBound.getSimpleLoopBound().upperBound(eCtx);
    if (dfaUpperBound < loopUb) {
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + dfaUpperBound + "String_Node_Str"+ loopUb+ "String_Node_Str"+ methodInfo+ "String_Node_Str"+ headOfLoopBlock);
      }
    }
 else     if (dfaUpperBound > loopUb) {
      logger.warn("String_Node_Str" + dfaUpperBound + "String_Node_Str"+ loopUb+ "String_Node_Str"+ methodInfo);
    }
 else {
      if (logger.isDebugEnabled()) {
        logger.debug("String_Node_Str" + methodInfo);
      }
    }
  }
  if (!printedLoopBoundInfoMessage.contains(headOfLoopBlock)) {
    logger.info("String_Node_Str" + methodInfo + "String_Node_Str"+ headOfLoopBlock+ "String_Node_Str"+ loopBound+ "String_Node_Str"+ annotatedBound);
    printedLoopBoundInfoMessage.add(headOfLoopBlock);
  }
  return loopBound;
}