new_contents: #!/usr/bin/env python
  """
  BenchExec is a framework for reliable benchmarking.
  This file is part of BenchExec.
  Copyright (C) 2007-2015  Dirk Beyer
  All rights reserved.
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at
      http://www.apache.org/licenses/LICENSE-2.0
  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
  """
  
  import benchexec.util as util
  import benchexec.tools.template
  import benchexec.result as result
  
  class Tool(benchexec.tools.template.BaseTool):
      """
      Tool wrapper for UL-CSeq (http://users.ecs.soton.ac.uk/gp4/cseq/cseq.html).
      """
  
      def executable(self):
          return util.find_executable('ul-cseq.py')
  
      def name(self):
          return 'UL-CSeq'
  
      def version(self, executable):
          return self._version_from_tool(executable)
  
      def cmdline(self, executable, options, tasks, propertyfile=None, rlimits={}):
          """
          Compose the command line to execute from the name of the executable,
          the user-specified options, and the inputfile to analyze.
          This method can get overridden, if, for example, some options should
          be enabled or if the order of arguments must be changed.
          All paths passed to this method (executable, tasks, and propertyfile)
          are either absolute or have been made relative to the designated working directory.
          @param executable: the path to the executable of the tool (typically the result of executable())
          @param options: a list of options, in the same order as given in the XML-file.
          @param tasks: a list of tasks, that should be analysed with the tool in one run.
                              In most cases we we have only _one_ inputfile.
          @param propertyfile: contains a specification for the verifier.
          @param rlimits: This dictionary contains resource-limits for a run,
                          for example: time-limit, soft-time-limit, hard-time-limit, memory-limit, cpu-core-limit.
                          All entries in rlimits are optional, so check for existence before usage!
          """
          assert len(tasks) == 1, "only one inputfile supported"
          inputfile = ["--input", tasks[0]]
          spec = ["--spec", propertyfile] if propertyfile is not None else []
          return [executable] + options + spec + inputfile
  
      def determine_result(self, returncode, returnsignal, output, isTimeout):
          output = '\n'.join(output)
          status = result.RESULT_UNKNOWN
          if "FALSE" in output:
              status = result.RESULT_FALSE_REACH
          elif "TRUE" in output:
              status = result.RESULT_TRUE_PROP
          else:
              status = result.RESULT_UNKNOWN
          return status
  
subject: Add wrapper script for UL-CSeq tool