def determine_result(self, returncode, returnsignal, output, isTimeout):
        #an empty tag cannot be parsed into a tree
        def sanitizeXML(s):
            return s.replace("<>", "<emptyTag>") \
                    .replace("</>", "</emptyTag>")

        if returnsignal == 0 and ((returncode == 0) or (returncode == 10)):
            try:
                tree = ET.fromstringlist(map(sanitizeXML, output))
                status = tree.findtext('cprover-status')

                if status is None:
                    def isErrorMessage(msg):
                        return msg.get('type', None) == 'ERROR'

                    messages = list(filter(isErrorMessage, tree.getiterator('message')))
                    if messages:
                        # for now, use only the first error message if there are several
                        msg = messages[0].findtext('text')
                        if msg == 'Out of memory':
                            status = 'OUT OF MEMORY'
                        elif msg:
                            status = 'ERROR ({0})'.format(msg)
                        else:
                            status = 'ERROR'
                    else:
                        status = 'INVALID OUTPUT'

                elif status == "FAILURE":
                    assert returncode == 10
                    reason = tree.find('goto_trace').find('failure').findtext('reason')
                    if not reason:
                        reason = tree.find('goto_trace').find('failure').get('reason')
                    if 'unwinding assertion' in reason:
                        status = result.RESULT_UNKNOWN
                    else:
                        status = result.RESULT_FALSE_REACH

                elif status == "SUCCESS":
                    assert returncode == 0
                    if "--no-unwinding-assertions" in self.options:
                        status = result.RESULT_UNKNOWN
                    else:
                        status = result.RESULT_TRUE_PROP

            except Exception:
                if isTimeout:
                    # in this case an exception is expected as the XML is invalid
                    status = 'TIMEOUT'
                elif output in 'Minisat::OutOfMemoryException':
                    status = 'OUT OF MEMORY'
                else:
                    status = 'INVALID OUTPUT'
                    logging.exception("Error parsing impara output for returncode %d", returncode)

        elif returncode == 64 and 'Usage error!' in output:
            status = 'INVALID ARGUMENTS'

        else:
            status = result.RESULT_ERROR

        return status
dataset/ETHPy150Open sosy-lab/benchexec/benchexec/tools/impara.py/Tool.determine_result/swapped operands of `in`