Program: 7253
Project: 7253
Buggy source:
/** 
 * This task wraps around the code necessary to checkout Integrity CM Members on remote machines
 */
public Boolean invoke(File workspaceFile,VirtualChannel channel) throws IOException {
  FilePath workspace=new FilePath(workspaceFile);
  APISession api=scm.createAPISession();
  try {
    if (cleanCopy) {
      listener.getLogger().println("String_Node_Str" + workspace);
      logger.info("String_Node_Str" + workspace);
      workspace.deleteContents();
      listener.getLogger().println("String_Node_Str");
      List<IntegrityCMMember> projectMembers=siProject.getProjectMembers();
      for (Iterator<IntegrityCMMember> it=projectMembers.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      listener.getLogger().println("String_Node_Str" + projectMembers.size() + "String_Node_Str");
    }
 else {
      List<IntegrityCMMember> newMembersList=siProject.getAddedMembers();
      for (Iterator<IntegrityCMMember> it=newMembersList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      List<IntegrityCMMember> updatedMembersList=siProject.getUpdatedMembers();
      for (Iterator<IntegrityCMMember> it=updatedMembersList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      List<IntegrityCMMember> memberDropList=siProject.getDroppedMembers();
      for (Iterator<IntegrityCMMember> it=memberDropList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        File dropFile=new File(siMember.getTargetFilePath());
        if (dropFile.exists() && !dropFile.delete()) {
          listener.getLogger().println("String_Node_Str" + dropFile.getAbsolutePath() + "String_Node_Str");
          return false;
        }
      }
      listener.getLogger().println("String_Node_Str" + (newMembersList.size() + updatedMembersList.size()) + "String_Node_Str"+ memberDropList.size()+ "String_Node_Str");
    }
  }
 catch (  APIException aex) {
    logger.error("String_Node_Str");
    listener.getLogger().println("String_Node_Str");
    ExceptionHandler eh=new ExceptionHandler(aex);
    logger.error(eh.getMessage());
    listener.getLogger().println(eh.getMessage());
    logger.info(eh.getCommand() + "String_Node_Str" + eh.getExitCode());
    listener.getLogger().println(eh.getCommand() + "String_Node_Str" + eh.getExitCode());
    aex.printStackTrace();
    return false;
  }
catch (  InterruptedException iex) {
    logger.error("String_Node_Str");
    listener.getLogger().println("String_Node_Str");
    logger.error(iex.getMessage());
    listener.getLogger().println(iex.getMessage());
    listener.getLogger().println("String_Node_Str" + workspace + "String_Node_Str");
    return false;
  }
 finally {
    api.Terminate();
  }
  return true;
}

Fixed version (ground truth):
/** 
 * This task wraps around the code necessary to checkout Integrity CM Members on remote machines
 */
public Boolean invoke(File workspaceFile,VirtualChannel channel) throws IOException {
  FilePath workspace=new FilePath(workspaceFile);
  APISession api=scm.createAPISession();
  if (null == api) {
    listener.getLogger().println("String_Node_Str");
    return false;
  }
  try {
    if (cleanCopy) {
      listener.getLogger().println("String_Node_Str" + workspace);
      logger.info("String_Node_Str" + workspace);
      workspace.deleteContents();
      listener.getLogger().println("String_Node_Str");
      List<IntegrityCMMember> projectMembers=siProject.getProjectMembers();
      for (Iterator<IntegrityCMMember> it=projectMembers.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      listener.getLogger().println("String_Node_Str" + projectMembers.size() + "String_Node_Str");
    }
 else {
      List<IntegrityCMMember> newMembersList=siProject.getAddedMembers();
      for (Iterator<IntegrityCMMember> it=newMembersList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      List<IntegrityCMMember> updatedMembersList=siProject.getUpdatedMembers();
      for (Iterator<IntegrityCMMember> it=updatedMembersList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        siMember.checkout(api);
      }
      List<IntegrityCMMember> memberDropList=siProject.getDroppedMembers();
      for (Iterator<IntegrityCMMember> it=memberDropList.iterator(); it.hasNext(); ) {
        IntegrityCMMember siMember=it.next();
        siMember.setWorkspaceDir("String_Node_Str" + workspace);
        logger.info("String_Node_Str" + siMember.getTargetFilePath() + "String_Node_Str"+ siMember.getRevision());
        File dropFile=new File(siMember.getTargetFilePath());
        if (dropFile.exists() && !dropFile.delete()) {
          listener.getLogger().println("String_Node_Str" + dropFile.getAbsolutePath() + "String_Node_Str");
          return false;
        }
      }
      listener.getLogger().println("String_Node_Str" + (newMembersList.size() + updatedMembersList.size()) + "String_Node_Str"+ memberDropList.size()+ "String_Node_Str");
    }
  }
 catch (  APIException aex) {
    logger.error("String_Node_Str");
    listener.getLogger().println("String_Node_Str");
    ExceptionHandler eh=new ExceptionHandler(aex);
    logger.error(eh.getMessage());
    listener.getLogger().println(eh.getMessage());
    logger.info(eh.getCommand() + "String_Node_Str" + eh.getExitCode());
    listener.getLogger().println(eh.getCommand() + "String_Node_Str" + eh.getExitCode());
    aex.printStackTrace();
    return false;
  }
catch (  InterruptedException iex) {
    logger.error("String_Node_Str");
    listener.getLogger().println("String_Node_Str");
    logger.error(iex.getMessage());
    listener.getLogger().println(iex.getMessage());
    listener.getLogger().println("String_Node_Str" + workspace + "String_Node_Str");
    return false;
  }
 finally {
    api.Terminate();
  }
  return true;
}