Program: 188318
Project: 188318
Buggy source:
@Override public Report executeOnRepresentation(IndexService index,ModelService model,StorageService storage,Report report,SimpleJobPluginInfo jobPluginInfo,List<Representation> list,Job job) throws PluginException {
  for (  Representation representation : list) {
    Report reportItem=PluginHelper.initPluginReportItem(this,IdUtils.getRepresentationId(representation),Representation.class);
    String dipId="String_Node_Str";
    try {
      LOGGER.debug("String_Node_Str",representation);
      boolean recursive=true;
      CloseableIterable<OptionalWithCause<File>> allFiles=model.listFilesUnder(representation.getAipId(),representation.getId(),recursive);
      for (      OptionalWithCause<File> oFile : allFiles) {
        if (oFile.isPresent()) {
          File file=oFile.get();
          dipId=IdUtils.createUUID();
          Permissions aipPermissions=model.retrieveAIP(representation.getAipId()).getPermissions();
          RepresentationLink representationLink=new RepresentationLink(representation.getAipId(),representation.getId());
          List<RepresentationLink> links=new ArrayList<>();
          links.add(representationLink);
          DIP dip=new DIP();
          dip.setId(dipId);
          dip.setRepresentationIds(links);
          dip.setPermissions(aipPermissions);
          dip.setTitle(getDIPTitle());
          dip.setDescription(getDIPDescription());
          dip.setType(RodaConstants.DIP_TYPE_DIGITAL_SIGNATURE);
          dip=model.createDIP(dip,false);
          manageFileSigning(model,index,storage,file,dip.getId());
          model.notifyDIPCreated(dip,true);
        }
 else {
          LOGGER.error("String_Node_Str",oFile.getCause());
        }
      }
      IOUtils.closeQuietly(allFiles);
      reportItem.setPluginState(PluginState.SUCCESS);
      jobPluginInfo.incrementObjectsProcessedWithSuccess();
    }
 catch (    Exception|LinkageError e) {
      LOGGER.error("String_Node_Str" + representation.getId() + "String_Node_Str"+ e.getMessage(),e);
      reportItem.setPluginState(PluginState.FAILURE).setPluginDetails(e.getMessage());
      jobPluginInfo.incrementObjectsProcessedWithFailure();
      try {
        model.deleteDIP(dipId);
      }
 catch (      GenericException|NotFoundException|AuthorizationDeniedException e1) {
      }
    }
 finally {
      report.addReport(reportItem);
      PluginHelper.updatePartialJobReport(this,model,reportItem,true,job);
    }
  }
  return report;
}

Fixed version (ground truth):
@Override public Report executeOnRepresentation(IndexService index,ModelService model,StorageService storage,Report report,SimpleJobPluginInfo jobPluginInfo,List<Representation> list,Job job) throws PluginException {
  for (  Representation representation : list) {
    Report reportItem=PluginHelper.initPluginReportItem(this,IdUtils.getRepresentationId(representation),Representation.class);
    String dipId=IdUtils.createUUID();
    try {
      Permissions aipPermissions=model.retrieveAIP(representation.getAipId()).getPermissions();
      RepresentationLink representationLink=new RepresentationLink(representation.getAipId(),representation.getId());
      List<RepresentationLink> links=new ArrayList<>();
      links.add(representationLink);
      DIP dip=new DIP();
      dip.setId(dipId);
      dip.setRepresentationIds(links);
      dip.setPermissions(aipPermissions);
      dip.setTitle(getDIPTitle());
      dip.setDescription(getDIPDescription());
      dip.setType(RodaConstants.DIP_TYPE_DIGITAL_SIGNATURE);
      dip=model.createDIP(dip,false);
      LOGGER.debug("String_Node_Str",representation);
      boolean recursive=true;
      CloseableIterable<OptionalWithCause<File>> allFiles=model.listFilesUnder(representation.getAipId(),representation.getId(),recursive);
      for (      OptionalWithCause<File> oFile : allFiles) {
        if (oFile.isPresent()) {
          manageFileSigning(model,index,storage,oFile.get(),dip.getId());
        }
 else {
          LOGGER.error("String_Node_Str",oFile.getCause());
        }
      }
      model.notifyDIPCreated(dip,true);
      IOUtils.closeQuietly(allFiles);
      reportItem.setPluginState(PluginState.SUCCESS);
      jobPluginInfo.incrementObjectsProcessedWithSuccess();
    }
 catch (    Exception|LinkageError e) {
      LOGGER.error("String_Node_Str" + representation.getId() + "String_Node_Str"+ e.getMessage(),e);
      reportItem.setPluginState(PluginState.FAILURE).setPluginDetails(e.getMessage());
      jobPluginInfo.incrementObjectsProcessedWithFailure();
      try {
        model.deleteDIP(dipId);
      }
 catch (      GenericException|NotFoundException|AuthorizationDeniedException e1) {
      }
    }
 finally {
      report.addReport(reportItem);
      PluginHelper.updatePartialJobReport(this,model,reportItem,true,job);
    }
  }
  return report;
}