java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 20:17:35,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:17:35,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:17:35,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:17:35,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:17:35,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:17:35,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:17:35,387 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:17:35,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:17:35,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:17:35,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:17:35,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:17:35,398 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:17:35,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:17:35,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:17:35,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:17:35,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:17:35,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:17:35,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:17:35,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:17:35,416 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:17:35,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:17:35,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:17:35,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:17:35,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:17:35,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:17:35,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:17:35,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:17:35,430 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:17:35,431 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:17:35,431 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:17:35,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:17:35,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:17:35,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:17:35,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:17:35,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:17:35,436 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:17:35,436 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:17:35,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:17:35,437 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:17:35,438 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:17:35,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 20:17:35,462 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:17:35,462 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:17:35,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:17:35,466 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:17:35,467 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:17:35,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:17:35,467 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:17:35,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:17:35,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:17:35,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:17:35,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:17:35,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:17:35,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:17:35,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:17:35,470 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:17:35,470 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:17:35,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:17:35,471 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:17:35,471 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:17:35,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:17:35,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:17:35,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:17:35,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:17:35,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:17:35,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:17:35,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:17:35,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:17:35,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:17:35,479 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-13 20:17:35,807 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:17:35,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:17:35,830 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:17:35,832 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:17:35,832 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:17:35,833 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2019-10-13 20:17:35,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766a10368/dbef5a9c628843eb860e70ae0ce05f41/FLAGd6bfb1e46 [2019-10-13 20:17:36,594 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:17:36,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-commit-tester/m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2019-10-13 20:17:36,621 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766a10368/dbef5a9c628843eb860e70ae0ce05f41/FLAGd6bfb1e46 [2019-10-13 20:17:36,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/766a10368/dbef5a9c628843eb860e70ae0ce05f41 [2019-10-13 20:17:36,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:17:36,680 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:17:36,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:17:36,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:17:36,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:17:36,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:36" (1/1) ... [2019-10-13 20:17:36,688 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200e8085 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:36, skipping insertion in model container [2019-10-13 20:17:36,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:17:36" (1/1) ... [2019-10-13 20:17:36,695 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:17:36,779 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:17:37,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:17:37,818 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:17:38,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:17:38,096 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:17:38,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38 WrapperNode [2019-10-13 20:17:38,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:17:38,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:17:38,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:17:38,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:17:38,113 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,168 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... [2019-10-13 20:17:38,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:17:38,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:17:38,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:17:38,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:17:38,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:17:38,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:17:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:17:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2019-10-13 20:17:38,411 INFO L138 BoogieDeclarations]: Found implementation of procedure __swab16p [2019-10-13 20:17:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2019-10-13 20:17:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-10-13 20:17:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure init_completion [2019-10-13 20:17:38,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 20:17:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 20:17:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 20:17:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 20:17:38,413 INFO L138 BoogieDeclarations]: Found implementation of procedure extract_value [2019-10-13 20:17:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_send_message [2019-10-13 20:17:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_ver_check [2019-10-13 20:17:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_query_sensor_count [2019-10-13 20:17:38,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_query_sensor_name [2019-10-13 20:17:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_query_sensor_data [2019-10-13 20:17:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_reset_high_low_data [2019-10-13 20:17:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_update_device [2019-10-13 20:17:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure get_bmc_data [2019-10-13 20:17:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure show_name [2019-10-13 20:17:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_show_sensor [2019-10-13 20:17:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_reset_high_low [2019-10-13 20:17:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure is_power_sensor [2019-10-13 20:17:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure is_temp_sensor [2019-10-13 20:17:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure power_sensor_multiplier [2019-10-13 20:17:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure create_sensor [2019-10-13 20:17:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_find_sensors [2019-10-13 20:17:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_register_bmc [2019-10-13 20:17:38,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_bmc_delete [2019-10-13 20:17:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_bmc_gone [2019-10-13 20:17:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_msg_handler [2019-10-13 20:17:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_init [2019-10-13 20:17:38,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ibmpex_exit [2019-10-13 20:17:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:17:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 20:17:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_5 [2019-10-13 20:17:38,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_6 [2019-10-13 20:17:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_7 [2019-10-13 20:17:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 20:17:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 20:17:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 20:17:38,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 20:17:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 20:17:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 20:17:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_sysfs [2019-10-13 20:17:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2019-10-13 20:17:38,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute_2 [2019-10-13 20:17:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 20:17:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 20:17:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-13 20:17:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-13 20:17:38,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-13 20:17:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2019-10-13 20:17:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 20:17:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 20:17:38,424 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 20:17:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2019-10-13 20:17:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_register [2019-10-13 20:17:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure hwmon_device_unregister [2019-10-13 20:17:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_create_user [2019-10-13 20:17:38,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_destroy_user [2019-10-13 20:17:38,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_free_recv_msg [2019-10-13 20:17:38,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_request_settime [2019-10-13 20:17:38,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_watcher_register [2019-10-13 20:17:38,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_smi_watcher_unregister [2019-10-13 20:17:38,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ipmi_validate_addr [2019-10-13 20:17:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 20:17:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2019-10-13 20:17:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-13 20:17:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2019-10-13 20:17:38,427 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 20:17:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2019-10-13 20:17:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 20:17:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 20:17:38,428 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 20:17:38,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 20:17:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:17:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 20:17:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2019-10-13 20:17:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure __swab16p [2019-10-13 20:17:38,429 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:17:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2019-10-13 20:17:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 20:17:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-10-13 20:17:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 20:17:38,430 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2019-10-13 20:17:38,431 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure init_completion [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2019-10-13 20:17:38,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_5 [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_6 [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_7 [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 20:17:38,433 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_sysfs [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_device_create_file_dev_attr_of_sensor_device_attribute_2 [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 20:17:38,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_free_recv_msg [2019-10-13 20:17:38,435 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_create_user [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_destroy_user [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_request_settime [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_watcher_register [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_smi_watcher_unregister [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure ipmi_validate_addr [2019-10-13 20:17:38,436 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_register [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure hwmon_device_unregister [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure extract_value [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_msg_handler [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_register_bmc [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_bmc_gone [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_send_message [2019-10-13 20:17:38,437 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_ver_check [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_query_sensor_count [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_query_sensor_name [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_query_sensor_data [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_reset_high_low_data [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_update_device [2019-10-13 20:17:38,438 INFO L130 BoogieDeclarations]: Found specification of procedure get_bmc_data [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure show_name [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_show_sensor [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_reset_high_low [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure is_power_sensor [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure is_temp_sensor [2019-10-13 20:17:38,439 INFO L130 BoogieDeclarations]: Found specification of procedure power_sensor_multiplier [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure create_sensor [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_find_sensors [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_bmc_delete [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 20:17:38,440 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_init [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ibmpex_exit [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 20:17:38,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:17:38,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 20:17:38,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 20:17:40,533 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:17:40,534 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 20:17:40,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:40 BoogieIcfgContainer [2019-10-13 20:17:40,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:17:40,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:17:40,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:17:40,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:17:40,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:17:36" (1/3) ... [2019-10-13 20:17:40,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da53fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:40, skipping insertion in model container [2019-10-13 20:17:40,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:17:38" (2/3) ... [2019-10-13 20:17:40,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da53fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:17:40, skipping insertion in model container [2019-10-13 20:17:40,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:17:40" (3/3) ... [2019-10-13 20:17:40,546 INFO L109 eAbstractionObserver]: Analyzing ICFG m0_drivers-hwmon-ibmpex-ko--130_7a--d631323.i [2019-10-13 20:17:40,558 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:17:40,570 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:17:40,582 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:17:40,620 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:17:40,620 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:17:40,620 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:17:40,620 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:17:40,620 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:17:40,621 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:17:40,621 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:17:40,621 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:17:40,651 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states. [2019-10-13 20:17:40,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 20:17:40,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:17:40,676 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:17:40,679 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:17:40,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:17:40,684 INFO L82 PathProgramCache]: Analyzing trace with hash -135061929, now seen corresponding path program 1 times [2019-10-13 20:17:40,694 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:17:40,695 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065969318] [2019-10-13 20:17:40,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:40,695 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:40,696 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:17:41,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:17:41,852 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:17:41,853 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065969318] [2019-10-13 20:17:41,854 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:17:41,854 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 20:17:41,855 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921155592] [2019-10-13 20:17:41,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 20:17:41,864 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:17:41,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 20:17:41,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 20:17:41,883 INFO L87 Difference]: Start difference. First operand 484 states. Second operand 15 states. [2019-10-13 20:17:58,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:17:58,141 INFO L93 Difference]: Finished difference Result 3000 states and 3905 transitions. [2019-10-13 20:17:58,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2019-10-13 20:17:58,144 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 194 [2019-10-13 20:17:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:17:58,217 INFO L225 Difference]: With dead ends: 3000 [2019-10-13 20:17:58,218 INFO L226 Difference]: Without dead ends: 2495 [2019-10-13 20:17:58,236 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=345, Invalid=1635, Unknown=0, NotChecked=0, Total=1980 [2019-10-13 20:17:58,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2019-10-13 20:17:58,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 2206. [2019-10-13 20:17:58,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2206 states. [2019-10-13 20:17:58,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 2795 transitions. [2019-10-13 20:17:58,657 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 2795 transitions. Word has length 194 [2019-10-13 20:17:58,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:17:58,658 INFO L462 AbstractCegarLoop]: Abstraction has 2206 states and 2795 transitions. [2019-10-13 20:17:58,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 20:17:58,659 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 2795 transitions. [2019-10-13 20:17:58,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 20:17:58,671 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:17:58,672 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:17:58,672 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:17:58,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:17:58,673 INFO L82 PathProgramCache]: Analyzing trace with hash 194703832, now seen corresponding path program 1 times [2019-10-13 20:17:58,673 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:17:58,673 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501627622] [2019-10-13 20:17:58,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:58,674 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:58,674 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:17:58,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:17:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:17:58,908 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501627622] [2019-10-13 20:17:58,908 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:17:58,908 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:17:58,909 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392515522] [2019-10-13 20:17:58,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:17:58,911 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:17:58,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:17:58,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:17:58,912 INFO L87 Difference]: Start difference. First operand 2206 states and 2795 transitions. Second operand 3 states. [2019-10-13 20:17:59,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:17:59,047 INFO L93 Difference]: Finished difference Result 4395 states and 5610 transitions. [2019-10-13 20:17:59,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:17:59,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-13 20:17:59,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:17:59,065 INFO L225 Difference]: With dead ends: 4395 [2019-10-13 20:17:59,066 INFO L226 Difference]: Without dead ends: 2211 [2019-10-13 20:17:59,077 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:17:59,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2211 states. [2019-10-13 20:17:59,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2211 to 2211. [2019-10-13 20:17:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2211 states. [2019-10-13 20:17:59,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 2800 transitions. [2019-10-13 20:17:59,213 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 2800 transitions. Word has length 194 [2019-10-13 20:17:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:17:59,214 INFO L462 AbstractCegarLoop]: Abstraction has 2211 states and 2800 transitions. [2019-10-13 20:17:59,214 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:17:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 2800 transitions. [2019-10-13 20:17:59,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-13 20:17:59,218 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:17:59,219 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:17:59,219 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:17:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:17:59,219 INFO L82 PathProgramCache]: Analyzing trace with hash -834655466, now seen corresponding path program 1 times [2019-10-13 20:17:59,220 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:17:59,220 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672192481] [2019-10-13 20:17:59,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:59,220 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:17:59,220 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:17:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:17:59,668 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:17:59,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672192481] [2019-10-13 20:17:59,668 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:17:59,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 20:17:59,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633361766] [2019-10-13 20:17:59,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 20:17:59,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:17:59,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 20:17:59,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-10-13 20:17:59,672 INFO L87 Difference]: Start difference. First operand 2211 states and 2800 transitions. Second operand 11 states. [2019-10-13 20:18:09,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:18:09,972 INFO L93 Difference]: Finished difference Result 3829 states and 4965 transitions. [2019-10-13 20:18:09,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-10-13 20:18:09,973 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 194 [2019-10-13 20:18:09,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:18:09,996 INFO L225 Difference]: With dead ends: 3829 [2019-10-13 20:18:09,996 INFO L226 Difference]: Without dead ends: 3825 [2019-10-13 20:18:09,999 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=233, Invalid=697, Unknown=0, NotChecked=0, Total=930 [2019-10-13 20:18:10,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2019-10-13 20:18:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3565. [2019-10-13 20:18:10,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3565 states. [2019-10-13 20:18:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3565 states to 3565 states and 4558 transitions. [2019-10-13 20:18:10,185 INFO L78 Accepts]: Start accepts. Automaton has 3565 states and 4558 transitions. Word has length 194 [2019-10-13 20:18:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:18:10,186 INFO L462 AbstractCegarLoop]: Abstraction has 3565 states and 4558 transitions. [2019-10-13 20:18:10,186 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 20:18:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 3565 states and 4558 transitions. [2019-10-13 20:18:10,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 20:18:10,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:18:10,192 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:18:10,192 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:18:10,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:18:10,193 INFO L82 PathProgramCache]: Analyzing trace with hash -964064237, now seen corresponding path program 1 times [2019-10-13 20:18:10,193 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:18:10,193 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924335174] [2019-10-13 20:18:10,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:18:10,194 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:18:10,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:18:10,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:18:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:18:10,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924335174] [2019-10-13 20:18:10,430 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:18:10,431 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:18:10,431 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14123824] [2019-10-13 20:18:10,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:18:10,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:18:10,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:18:10,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:18:10,433 INFO L87 Difference]: Start difference. First operand 3565 states and 4558 transitions. Second operand 3 states. [2019-10-13 20:18:10,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:18:10,694 INFO L93 Difference]: Finished difference Result 5396 states and 6962 transitions. [2019-10-13 20:18:10,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:18:10,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-10-13 20:18:10,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:18:10,736 INFO L225 Difference]: With dead ends: 5396 [2019-10-13 20:18:10,737 INFO L226 Difference]: Without dead ends: 4937 [2019-10-13 20:18:10,744 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:18:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2019-10-13 20:18:11,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4840. [2019-10-13 20:18:11,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4840 states. [2019-10-13 20:18:11,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4840 states to 4840 states and 6183 transitions. [2019-10-13 20:18:11,121 INFO L78 Accepts]: Start accepts. Automaton has 4840 states and 6183 transitions. Word has length 208 [2019-10-13 20:18:11,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:18:11,122 INFO L462 AbstractCegarLoop]: Abstraction has 4840 states and 6183 transitions. [2019-10-13 20:18:11,123 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:18:11,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4840 states and 6183 transitions. [2019-10-13 20:18:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-10-13 20:18:11,127 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:18:11,127 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:18:11,128 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:18:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:18:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2041805916, now seen corresponding path program 1 times [2019-10-13 20:18:11,128 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:18:11,129 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210605496] [2019-10-13 20:18:11,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:18:11,129 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:18:11,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:18:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:18:11,303 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-13 20:18:11,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210605496] [2019-10-13 20:18:11,304 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:18:11,304 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:18:11,304 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643846650] [2019-10-13 20:18:11,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:18:11,305 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:18:11,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:18:11,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:18:11,307 INFO L87 Difference]: Start difference. First operand 4840 states and 6183 transitions. Second operand 3 states.