Program: 151498
Project: 151498
Buggy source:
@SuppressWarnings({"String_Node_Str","String_Node_Str"}) @Override public void complete(CompleteOperation completeOperation){
  ParameterInt param=context.getParser().getParameters().get(0);
  if (param.getName().startsWith(completeOperation.getBuffer()))   completeOperation.addCompletionCandidate(param.getName());
 else   if (param.getName().equals(completeOperation.getBuffer().trim())) {
    completeOperation.addCompletionCandidates(param.getOptionLongNamesWithDash());
  }
 else   if (completeOperation.getBuffer().startsWith(param.getName())) {
    ParsedCompleteObject completeObject=null;
    try {
      completeObject=new CommandLineCompletionParser(context.getParser()).findCompleteObject(completeOperation.getBuffer());
    }
 catch (    CommandLineParserException e) {
      logger.info(e.getMessage());
      return;
    }
    logger.info("String_Node_Str" + completeObject);
    if (completeObject.doDisplayOptions()) {
      if (completeObject.getName() != null && completeObject.getName().length() > 0) {
        if (param.findPossibleLongNamesWitdDash(completeObject.getName()).size() > 0) {
          if (param.findPossibleLongNamesWitdDash(completeObject.getName()).size() == 1) {
            completeOperation.addCompletionCandidate(param.findPossibleLongNamesWitdDash(completeObject.getName()).get(0));
            completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
          }
 else           completeOperation.addCompletionCandidates(param.findPossibleLongNamesWitdDash(completeObject.getName()));
        }
      }
 else {
        if (param.getOptionLongNamesWithDash().size() > 1) {
          completeOperation.addCompletionCandidates(param.getOptionLongNamesWithDash());
        }
 else {
          completeOperation.addCompletionCandidates(param.getOptionLongNamesWithDash());
          completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
        }
      }
    }
 else     if (completeObject.isOption()) {
      InputComponent inputOption=context.findInput(completeObject.getName());
      if (inputOption != null && inputOption.getValueType() == File.class) {
        completeOperation.setOffset(completeOperation.getCursor());
        if (completeObject.getValue() == null)         new FileLister("String_Node_Str",new File(System.getProperty("String_Node_Str"))).findMatchingDirectories(completeOperation);
 else         new FileLister(completeObject.getValue(),new File(System.getProperty("String_Node_Str"))).findMatchingDirectories(completeOperation);
      }
 else       if (inputOption != null && inputOption.getValueType() == Boolean.class) {
      }
 else       if (inputOption != null && inputOption.getValueType() == String.class) {
        if (inputOption instanceof UIInput) {
          if (completeObject.getValue() == null || ((((UIInput)inputOption).getValue() != null) && completeObject.getValue().startsWith(((UIInput)inputOption).getValue().toString()))) {
            completeOperation.addCompletionCandidate(((UIInput)inputOption).getValue().toString());
          }
        }
      }
      if (inputOption != null && inputOption instanceof UIInput) {
        Iterable<String> iter=((UIInput)inputOption).getCompleter().getCompletionProposals(null,inputOption,completeObject.getValue());
        if (iter != null) {
          for (          String s : iter)           completeOperation.addCompletionCandidate(s);
        }
        if (completeOperation.getCompletionCandidates().size() == 1) {
          completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
        }
      }
    }
 else     if (completeObject.isArgument()) {
      InputComponent inputOption=context.findInput("String_Node_Str");
      if (inputOption != null && inputOption.getValueType() == File.class) {
        completeOperation.setOffset(completeOperation.getCursor());
        if (completeObject.getValue() == null)         new FileLister("String_Node_Str",new File(System.getProperty("String_Node_Str"))).findMatchingDirectories(completeOperation);
 else         new FileLister(completeObject.getValue(),new File(System.getProperty("String_Node_Str"))).findMatchingDirectories(completeOperation);
      }
 else       if (inputOption != null && inputOption.getValueType() == Boolean.class) {
      }
 else       if (command instanceof Completion) {
        ((Completion)command).complete(completeOperation);
      }
 else {
        if (inputOption != null && inputOption instanceof UIInputMany) {
          Iterable<String> iter=((UIInputMany)inputOption).getCompleter().getCompletionProposals(null,inputOption,completeObject.getValue());
          if (iter != null) {
            for (            String s : iter) {
              completeOperation.addCompletionCandidate(s);
            }
          }
          if (completeOperation.getCompletionCandidates().size() == 1) {
            completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
          }
        }
      }
    }
  }
}

Fixed version (ground truth):
@SuppressWarnings({"String_Node_Str","String_Node_Str"}) @Override public void complete(CompleteOperation completeOperation){
  ParameterInt param=context.getParser().getParameters().get(0);
  if (param.getName().startsWith(completeOperation.getBuffer()))   completeOperation.addCompletionCandidate(param.getName());
 else   if (param.getName().equals(completeOperation.getBuffer().trim())) {
    defaultCompletion(completeOperation);
  }
 else   if (completeOperation.getBuffer().startsWith(param.getName())) {
    ParsedCompleteObject completeObject=null;
    try {
      completeObject=new CommandLineCompletionParser(context.getParser()).findCompleteObject(completeOperation.getBuffer());
    }
 catch (    CommandLineParserException e) {
      logger.warning(e.getMessage());
      return;
    }
    if (completeObject.doDisplayOptions()) {
      if (completeObject.getName() != null && completeObject.getName().length() > 0) {
        if (param.findPossibleLongNamesWitdDash(completeObject.getName()).size() > 0) {
          if (param.findPossibleLongNamesWitdDash(completeObject.getName()).size() == 1) {
            completeOperation.addCompletionCandidate(param.findPossibleLongNamesWitdDash(completeObject.getName()).get(0));
            completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
          }
 else           completeOperation.addCompletionCandidates(param.findPossibleLongNamesWitdDash(completeObject.getName()));
        }
      }
 else {
        if (param.getOptionLongNamesWithDash().size() > 1) {
          completeOperation.addCompletionCandidates(param.getOptionLongNamesWithDash());
        }
 else {
          completeOperation.addCompletionCandidates(param.getOptionLongNamesWithDash());
          completeOperation.setOffset(completeOperation.getCursor() - completeObject.getOffset());
        }
      }
    }
 else     if (completeObject.isOption()) {
      optionCompletion(completeOperation,completeObject);
    }
 else     if (completeObject.isArgument()) {
      argumentCompletion(completeOperation,completeObject);
    }
  }
}