def ikos_analyzer(db_path, pp_path, opt): if settings.BUILD_MODE == 'Debug': log.warning('ikos was built in debug mode, the analysis might be slow') # Fix huge slow down when ikos-analyzer uses DROP TABLE on an existing db if os.path.isfile(db_path): os.remove(db_path) cmd = [settings.ikos_analyzer()] # analysis options cmd += [ '-a=%s' % ','.join(opt.analyses), '-d=%s' % opt.domain, '-entry-points=%s' % ','.join(opt.entry_points), '-globals-init=%s' % opt.globals_init, '-proc=%s' % opt.procedural, '-j=%d' % opt.jobs, '-widening-strategy=%s' % opt.widening_strategy, '-widening-delay=%d' % opt.widening_delay, '-widening-period=%d' % opt.widening_period ] if opt.narrowing_strategy == 'auto': if opt.domain in domains_without_narrowing: cmd.append('-narrowing-strategy=meet') else: cmd.append('-narrowing-strategy=narrow') else: cmd.append('-narrowing-strategy=%s' % opt.narrowing_strategy) if opt.narrowing_iterations is not None: cmd.append('-narrowing-iterations=%d' % opt.narrowing_iterations) elif (opt.narrowing_strategy == 'auto' and opt.domain in domains_without_narrowing): cmd.append('-narrowing-iterations=%d' % args.meet_iterations_if_no_narrowing) if opt.widening_delay_functions: cmd.append('-widening-delay-functions=%s' % ','.join(opt.widening_delay_functions)) if opt.no_init_globals: cmd.append('-no-init-globals=%s' % ','.join(opt.no_init_globals)) if opt.no_liveness: cmd.append('-no-liveness') if opt.no_pointer: cmd.append('-no-pointer') if opt.no_widening_hints: cmd.append('-no-widening-hints') if opt.partitioning != 'no': cmd.append('-enable-partitioning-domain') if opt.no_fixpoint_cache: cmd.append('-no-fixpoint-cache') if opt.no_checks: cmd.append('-no-checks') if opt.hardware_addresses: cmd.append('-hardware-addresses=%s' % ','.join(opt.hardware_addresses)) if opt.hardware_addresses_file: cmd.append('-hardware-addresses-file=%s' % opt.hardware_addresses_file) if opt.argc is not None: cmd.append('-argc=%d' % opt.argc) # import options cmd.append('-allow-dbg-mismatch') if opt.no_bc_verify: cmd.append('-no-verify') if opt.no_libc: cmd.append('-no-libc') if opt.no_libcpp: cmd.append('-no-libcpp') if opt.no_libikos: cmd.append('-no-libikos') # AR passes options if opt.no_type_check: cmd.append('-no-type-check') if opt.no_simplify_cfg: cmd.append('-no-simplify-cfg') if opt.no_simplify_upcast_comparison: cmd.append('-no-simplify-upcast-comparison') if 'gauge' in opt.domain: cmd.append('-add-loop-counters') if opt.partitioning == 'return': cmd.append('-add-partitioning-variables') # debug options cmd += [ '-display-checks=%s' % opt.display_checks, '-display-inv=%s' % opt.display_inv ] if opt.display_ar: cmd.append('-display-ar') if opt.display_liveness: cmd.append('-display-liveness') if opt.display_function_pointer: cmd.append('-display-function-pointer') if opt.display_pointer: cmd.append('-display-pointer') if opt.display_fixpoint_parameters: cmd.append('-display-fixpoint-parameters') if opt.generate_dot: cmd += ['-generate-dot', '-generate-dot-dir', opt.generate_dot_dir] # add -name-values if necessary if (opt.display_checks in ('all', 'fail') or opt.display_inv in ('all', 'fail') or opt.display_liveness or opt.display_fixpoint_parameters or opt.display_function_pointer or opt.display_pointer or opt.display_raw_checks): cmd.append('-name-values') # misc. options if opt.color == 'yes': cmd.append('-color=1') elif opt.color == 'no': cmd.append('-color=0') cmd.append('-log=%s' % opt.log_level) cmd.append('-progress=%s' % opt.progress) # input/output cmd += [pp_path, '-o', db_path] # set resource limit, if requested if opt.mem: import resource # fails on Windows def set_limits(): mem_bytes = opt.mem * 1024 * 1024 resource.setrlimit(resource.RLIMIT_AS, [mem_bytes, mem_bytes]) else: set_limits = None # called after timeout def kill(p): try: log.error('Timeout') p.send_signal(signal.SIGALRM) except OSError: pass log.info('Running ikos analyzer') log.debug('Running %s' % command_string(cmd)) p = subprocess.Popen(cmd, preexec_fn=set_limits) timer = threading.Timer(opt.cpu, kill, [p]) if opt.cpu: timer.start() try: if sys.platform.startswith('win'): return_status = p.wait() else: _, return_status = os.waitpid(p.pid, 0) finally: # kill the timer if the process has terminated already if timer.isAlive(): timer.cancel() # special case for Windows, since it does not define WIFEXITED & co. if sys.platform.startswith('win'): if return_status != 0: raise AnalyzerError('a run-time error occurred', cmd, return_status) else: return # if it did not terminate properly, propagate this error code if os.WIFEXITED(return_status) and os.WEXITSTATUS(return_status) != 0: exit_status = os.WEXITSTATUS(return_status) raise AnalyzerError('a run-time error occurred', cmd, exit_status) if os.WIFSIGNALED(return_status): signum = os.WTERMSIG(return_status) raise AnalyzerError('exited with signal %s' % signal_name(signum), cmd, signum) if os.WIFSTOPPED(return_status): signum = os.WSTOPSIG(return_status) raise AnalyzerError('exited with signal %d' % signal_name(signum), cmd, signum)
def ikos_analyzer(db_path, pp_path, opt): # Fix huge slow down when ikos-analyzer uses DROP TABLE on an existing db if os.path.isfile(db_path): os.remove(db_path) cmd = [settings.ikos_analyzer()] # analysis options cmd += ['-a=%s' % ','.join(opt.analyses), '-d=%s' % opt.domain, '-entry-points=%s' % ','.join(opt.entry_points), '-globals-init=%s' % opt.globals_init, '-prec=%s' % opt.precision_level, '-proc=%s' % opt.procedural] if opt.no_init_globals: cmd.append('-no-init-globals=%s' % ','.join(opt.no_init_globals)) if opt.no_liveness: cmd.append('-no-liveness') if opt.no_pointer: cmd.append('-no-pointer') if opt.no_fixpoint_profiles: cmd.append('-no-fixpoint-profiles') if opt.hardware_addresses: cmd.append('-hardware-addresses=%s' % ','.join(opt.hardware_addresses)) if opt.hardware_addresses_file: cmd.append('-hardware-addresses-file=%s' % opt.hardware_addresses_file) if opt.argc is not None: cmd.append('-argc=%d' % opt.argc) # import options if opt.no_libc: cmd.append('-no-libc') if opt.no_libcpp: cmd.append('-no-libcpp') if opt.no_libikos: cmd.append('-no-libikos') # add -allow-dbg-mismatch if necessary if opt.opt_level == 'aggressive': cmd.append('-allow-dbg-mismatch') # AR passes options if opt.disable_type_check: cmd.append('-disable-type-check') if opt.no_simplify_cfg: cmd.append('-no-simplify-cfg') if opt.no_simplify_upcast_comparison: cmd.append('-no-simplify-upcast-comparison') if 'gauge' in opt.domain: cmd.append('-add-loop-counters') # debug options cmd += ['-display-checks=%s' % opt.display_checks, '-display-inv=%s' % opt.display_inv] if opt.display_ar: cmd.append('-display-ar') if opt.display_liveness: cmd.append('-display-liveness') if opt.display_function_pointer: cmd.append('-display-function-pointer') if opt.display_pointer: cmd.append('-display-pointer') if opt.display_fixpoint_profiles: cmd.append('-display-fixpoint-profiles') if opt.generate_dot: cmd += ['-generate-dot', '-generate-dot-dir', opt.generate_dot_dir] # add -name-values if necessary if (opt.display_checks in ('all', 'fail') or opt.display_inv in ('all', 'fail') or opt.display_liveness or opt.display_fixpoint_profiles or opt.display_function_pointer or opt.display_pointer or opt.display_raw_checks): cmd.append('-name-values') # misc. options cmd += ['-color=%s' % opt.color, '-log=%s' % opt.log_level] # input/output cmd += [pp_path, '-o', db_path] # set resource limit def set_limits(): if opt.mem > 0: mem_bytes = opt.mem * 1024 * 1024 resource.setrlimit(resource.RLIMIT_AS, [mem_bytes, mem_bytes]) # called after timeout def kill(p): try: log.error('Timeout') p.terminate() p.kill() p.wait() except OSError: pass log.info('Running ikos analyzer') log.debug('Running %s' % command_string(cmd)) p = subprocess.Popen(cmd, preexec_fn=set_limits) timer = threading.Timer(opt.cpu, kill, [p]) if opt.cpu > 0: timer.start() try: pid, return_status, ru_child = os.wait4(p.pid, 0) finally: # kill the timer if the process has terminated already if timer.isAlive(): timer.cancel() # if it did not terminate properly, propagate this error code if os.WIFEXITED(return_status) and os.WEXITSTATUS(return_status) != 0: exit_status = os.WEXITSTATUS(return_status) raise AnalyzerError('a run-time error occured', cmd, exit_status) if os.WIFSIGNALED(return_status): signal = os.WTERMSIG(return_status) raise AnalyzerError('exited with signal %d' % signal, cmd, signal) if os.WIFSTOPPED(return_status): signal = os.WSTOPSIG(return_status) raise AnalyzerError('exited with signal %d' % signal, cmd, signal)