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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 00:54:59,866 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:54:59,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:54:59,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:54:59,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:54:59,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:54:59,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:54:59,906 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:54:59,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:54:59,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:54:59,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:54:59,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:54:59,918 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:54:59,920 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:54:59,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:54:59,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:54:59,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:54:59,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:54:59,928 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:54:59,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:54:59,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:54:59,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:54:59,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:54:59,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:54:59,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:54:59,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:54:59,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:54:59,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:54:59,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:54:59,953 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:54:59,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:54:59,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:54:59,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:54:59,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:54:59,959 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:54:59,959 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:54:59,960 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:54:59,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:54:59,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:54:59,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:54:59,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:54:59,963 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 [2019-10-15 00:54:59,996 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:54:59,997 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:55:00,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:55:00,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:55:00,002 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:55:00,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:55:00,002 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:55:00,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:55:00,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:55:00,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:55:00,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:55:00,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:55:00,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:55:00,004 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:55:00,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:55:00,004 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:55:00,005 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:55:00,006 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:55:00,006 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:55:00,006 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:55:00,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:55:00,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:55:00,007 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:55:00,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:55:00,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:55:00,007 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:55:00,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:55:00,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:55:00,008 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 [2019-10-15 00:55:00,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:55:00,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:55:00,329 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:55:00,330 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:55:00,331 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:55:00,332 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 00:55:00,412 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a487c84f4/3c594b066cce4c7f8ea55ff2f2aa7302/FLAG2aaa5f678 [2019-10-15 00:55:01,226 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:55:01,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 00:55:01,271 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a487c84f4/3c594b066cce4c7f8ea55ff2f2aa7302/FLAG2aaa5f678 [2019-10-15 00:55:01,781 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a487c84f4/3c594b066cce4c7f8ea55ff2f2aa7302 [2019-10-15 00:55:01,791 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:55:01,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:55:01,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:55:01,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:55:01,799 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:55:01,800 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:55:01" (1/1) ... [2019-10-15 00:55:01,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580da5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:01, skipping insertion in model container [2019-10-15 00:55:01,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:55:01" (1/1) ... [2019-10-15 00:55:01,812 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:55:01,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:55:03,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:55:03,086 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:55:03,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:55:03,343 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:55:03,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03 WrapperNode [2019-10-15 00:55:03,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:55:03,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:55:03,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:55:03,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:55:03,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,439 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (1/1) ... [2019-10-15 00:55:03,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:55:03,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:55:03,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:55:03,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:55:03,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (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 [2019-10-15 00:55:03,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:55:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:55:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2019-10-15 00:55:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-15 00:55:03,680 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 00:55:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure slow_down_io [2019-10-15 00:55:03,682 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-15 00:55:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-15 00:55:03,683 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2019-10-15 00:55:03,684 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2019-10-15 00:55:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure outb_p [2019-10-15 00:55:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 00:55:03,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 00:55:03,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 00:55:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 00:55:03,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 00:55:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 00:55:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 00:55:03,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 00:55:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 00:55:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 00:55:03,691 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_select_wdt_out [2019-10-15 00:55:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_swc [2019-10-15 00:55:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_get_swc_base_addr [2019-10-15 00:55:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_swc_bank3 [2019-10-15 00:55:03,692 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_programm_wdto [2019-10-15 00:55:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_wden [2019-10-15 00:55:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_tren [2019-10-15 00:55:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_tren [2019-10-15 00:55:03,693 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable_sw_wd_trg [2019-10-15 00:55:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable_sw_wd_trg [2019-10-15 00:55:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_enable [2019-10-15 00:55:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_disable [2019-10-15 00:55:03,694 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_refresh [2019-10-15 00:55:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_open [2019-10-15 00:55:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_release [2019-10-15 00:55:03,695 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_status [2019-10-15 00:55:03,696 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_write [2019-10-15 00:55:03,697 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_ioctl [2019-10-15 00:55:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_notify_sys [2019-10-15 00:55:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_init [2019-10-15 00:55:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure pc87413_exit [2019-10-15 00:55:03,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2019-10-15 00:55:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:55:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___module_get_5 [2019-10-15 00:55:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonseekable_open_6 [2019-10-15 00:55:03,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_register_7 [2019-10-15 00:55:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_8 [2019-10-15 00:55:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_misc_deregister_9 [2019-10-15 00:55:03,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 00:55:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 00:55:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 00:55:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 00:55:03,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 00:55:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_get [2019-10-15 00:55:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2019-10-15 00:55:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2019-10-15 00:55:03,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put_and_exit [2019-10-15 00:55:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_refcount [2019-10-15 00:55:03,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 00:55:03,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-15 00:55:03,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-15 00:55:03,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2019-10-15 00:55:03,705 INFO L138 BoogieDeclarations]: Found implementation of procedure __request_region [2019-10-15 00:55:03,706 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 00:55:03,706 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-15 00:55:03,706 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-15 00:55:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 00:55:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2019-10-15 00:55:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_register [2019-10-15 00:55:03,707 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-10-15 00:55:03,708 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 00:55:03,708 INFO L138 BoogieDeclarations]: Found implementation of procedure register_reboot_notifier [2019-10-15 00:55:03,709 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2019-10-15 00:55:03,709 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 00:55:03,710 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 00:55:03,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 00:55:03,710 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 00:55:03,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:55:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 00:55:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-15 00:55:03,711 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 00:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 00:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-15 00:55:03,712 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 00:55:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure slow_down_io [2019-10-15 00:55:03,713 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2019-10-15 00:55:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 00:55:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-15 00:55:03,714 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure __request_region [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2019-10-15 00:55:03,715 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2019-10-15 00:55:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure outb_p [2019-10-15 00:55:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___module_get_5 [2019-10-15 00:55:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_get [2019-10-15 00:55:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 00:55:03,716 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 00:55:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:55:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 00:55:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 00:55:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 00:55:03,717 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 00:55:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 00:55:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 00:55:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 00:55:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 00:55:03,718 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 00:55:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 00:55:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 00:55:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 00:55:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 00:55:03,719 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 00:55:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2019-10-15 00:55:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure misc_register [2019-10-15 00:55:03,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_register_7 [2019-10-15 00:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2019-10-15 00:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_8 [2019-10-15 00:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_misc_deregister_9 [2019-10-15 00:55:03,721 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-10-15 00:55:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonseekable_open_6 [2019-10-15 00:55:03,722 INFO L130 BoogieDeclarations]: Found specification of procedure register_reboot_notifier [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 00:55:03,723 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_select_wdt_out [2019-10-15 00:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_swc [2019-10-15 00:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_get_swc_base_addr [2019-10-15 00:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_swc_bank3 [2019-10-15 00:55:03,724 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_programm_wdto [2019-10-15 00:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_wden [2019-10-15 00:55:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_tren [2019-10-15 00:55:03,731 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_tren [2019-10-15 00:55:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable_sw_wd_trg [2019-10-15 00:55:03,732 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable_sw_wd_trg [2019-10-15 00:55:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_enable [2019-10-15 00:55:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_disable [2019-10-15 00:55:03,733 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_refresh [2019-10-15 00:55:03,734 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_open [2019-10-15 00:55:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_release [2019-10-15 00:55:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_status [2019-10-15 00:55:03,741 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_write [2019-10-15 00:55:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_ioctl [2019-10-15 00:55:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 00:55:03,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_notify_sys [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_init [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure pc87413_exit [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 00:55:03,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 00:55:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:55:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 00:55:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 00:55:03,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2019-10-15 00:55:03,745 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put_and_exit [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_refcount [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:55:03,746 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 00:55:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 00:55:03,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:55:04,572 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 00:55:05,493 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_module_put_and_exitFINAL: assume true; [2019-10-15 00:55:08,201 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:55:08,201 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 00:55:08,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:55:08 BoogieIcfgContainer [2019-10-15 00:55:08,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:55:08,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:55:08,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:55:08,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:55:08,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:55:01" (1/3) ... [2019-10-15 00:55:08,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af6cbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:55:08, skipping insertion in model container [2019-10-15 00:55:08,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:55:03" (2/3) ... [2019-10-15 00:55:08,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af6cbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:55:08, skipping insertion in model container [2019-10-15 00:55:08,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:55:08" (3/3) ... [2019-10-15 00:55:08,211 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--watchdog--pc87413_wdt.ko-entry_point.cil.out.i [2019-10-15 00:55:08,221 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:55:08,230 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:55:08,241 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:55:08,271 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:55:08,271 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:55:08,271 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:55:08,271 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:55:08,271 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:55:08,271 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:55:08,271 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:55:08,272 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:55:08,301 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states. [2019-10-15 00:55:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 00:55:08,320 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:08,321 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:08,323 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:08,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:08,329 INFO L82 PathProgramCache]: Analyzing trace with hash -140049364, now seen corresponding path program 1 times [2019-10-15 00:55:08,336 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:08,337 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949013866] [2019-10-15 00:55:08,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:08,337 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:08,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:09,083 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-10-15 00:55:09,084 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949013866] [2019-10-15 00:55:09,085 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:55:09,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:55:09,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128016813] [2019-10-15 00:55:09,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:55:09,092 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:09,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:55:09,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:55:09,110 INFO L87 Difference]: Start difference. First operand 487 states. Second operand 3 states. [2019-10-15 00:55:09,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:09,266 INFO L93 Difference]: Finished difference Result 933 states and 1223 transitions. [2019-10-15 00:55:09,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:55:09,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-15 00:55:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:09,289 INFO L225 Difference]: With dead ends: 933 [2019-10-15 00:55:09,290 INFO L226 Difference]: Without dead ends: 472 [2019-10-15 00:55:09,297 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 [2019-10-15 00:55:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2019-10-15 00:55:09,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 467. [2019-10-15 00:55:09,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2019-10-15 00:55:09,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 607 transitions. [2019-10-15 00:55:09,414 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 607 transitions. Word has length 144 [2019-10-15 00:55:09,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:09,417 INFO L462 AbstractCegarLoop]: Abstraction has 467 states and 607 transitions. [2019-10-15 00:55:09,417 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:55:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 607 transitions. [2019-10-15 00:55:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 00:55:09,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:09,431 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:09,434 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:09,434 INFO L82 PathProgramCache]: Analyzing trace with hash -82791062, now seen corresponding path program 1 times [2019-10-15 00:55:09,434 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:09,435 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781431286] [2019-10-15 00:55:09,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:09,435 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:09,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:09,825 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2019-10-15 00:55:09,826 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781431286] [2019-10-15 00:55:09,826 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:55:09,826 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:55:09,826 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135920891] [2019-10-15 00:55:09,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:55:09,832 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:09,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:55:09,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:55:09,833 INFO L87 Difference]: Start difference. First operand 467 states and 607 transitions. Second operand 3 states. [2019-10-15 00:55:09,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:09,958 INFO L93 Difference]: Finished difference Result 896 states and 1169 transitions. [2019-10-15 00:55:09,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:55:09,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-15 00:55:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:09,985 INFO L225 Difference]: With dead ends: 896 [2019-10-15 00:55:09,985 INFO L226 Difference]: Without dead ends: 873 [2019-10-15 00:55:09,988 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:55:09,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2019-10-15 00:55:10,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 872. [2019-10-15 00:55:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2019-10-15 00:55:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1139 transitions. [2019-10-15 00:55:10,136 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1139 transitions. Word has length 144 [2019-10-15 00:55:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:10,137 INFO L462 AbstractCegarLoop]: Abstraction has 872 states and 1139 transitions. [2019-10-15 00:55:10,137 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:55:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1139 transitions. [2019-10-15 00:55:10,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2019-10-15 00:55:10,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:10,157 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:10,158 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:10,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:10,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1426613195, now seen corresponding path program 1 times [2019-10-15 00:55:10,159 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:10,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409021110] [2019-10-15 00:55:10,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:10,159 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:10,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:10,668 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-10-15 00:55:10,669 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409021110] [2019-10-15 00:55:10,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:55:10,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:55:10,670 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005437201] [2019-10-15 00:55:10,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:55:10,671 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:10,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:55:10,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:55:10,671 INFO L87 Difference]: Start difference. First operand 872 states and 1139 transitions. Second operand 3 states. [2019-10-15 00:55:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:10,809 INFO L93 Difference]: Finished difference Result 1991 states and 2565 transitions. [2019-10-15 00:55:10,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:55:10,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 371 [2019-10-15 00:55:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:10,818 INFO L225 Difference]: With dead ends: 1991 [2019-10-15 00:55:10,818 INFO L226 Difference]: Without dead ends: 1157 [2019-10-15 00:55:10,822 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 [2019-10-15 00:55:10,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2019-10-15 00:55:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1125. [2019-10-15 00:55:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2019-10-15 00:55:10,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1437 transitions. [2019-10-15 00:55:10,890 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1437 transitions. Word has length 371 [2019-10-15 00:55:10,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:10,891 INFO L462 AbstractCegarLoop]: Abstraction has 1125 states and 1437 transitions. [2019-10-15 00:55:10,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:55:10,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1437 transitions. [2019-10-15 00:55:10,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2019-10-15 00:55:10,903 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:10,903 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:10,904 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:10,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:10,904 INFO L82 PathProgramCache]: Analyzing trace with hash -614728245, now seen corresponding path program 1 times [2019-10-15 00:55:10,904 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:10,905 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61704852] [2019-10-15 00:55:10,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:10,905 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:10,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:10,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 631 trivial. 0 not checked. [2019-10-15 00:55:11,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61704852] [2019-10-15 00:55:11,301 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725596066] [2019-10-15 00:55:11,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:11,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 00:55:12,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:55:12,386 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-10-15 00:55:12,386 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:55:13,361 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-10-15 00:55:13,362 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 00:55:13,363 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 8 [2019-10-15 00:55:13,363 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518718006] [2019-10-15 00:55:13,364 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:55:13,365 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:55:13,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:55:13,365 INFO L87 Difference]: Start difference. First operand 1125 states and 1437 transitions. Second operand 4 states. [2019-10-15 00:55:13,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:13,654 INFO L93 Difference]: Finished difference Result 2987 states and 3838 transitions. [2019-10-15 00:55:13,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:55:13,655 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 448 [2019-10-15 00:55:13,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:13,667 INFO L225 Difference]: With dead ends: 2987 [2019-10-15 00:55:13,667 INFO L226 Difference]: Without dead ends: 1818 [2019-10-15 00:55:13,672 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 901 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:55:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-10-15 00:55:13,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1811. [2019-10-15 00:55:13,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2019-10-15 00:55:13,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2334 transitions. [2019-10-15 00:55:13,767 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2334 transitions. Word has length 448 [2019-10-15 00:55:13,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:13,768 INFO L462 AbstractCegarLoop]: Abstraction has 1811 states and 2334 transitions. [2019-10-15 00:55:13,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:55:13,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2334 transitions. [2019-10-15 00:55:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449 [2019-10-15 00:55:13,783 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:13,783 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:13,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:13,990 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:13,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:13,991 INFO L82 PathProgramCache]: Analyzing trace with hash 702037513, now seen corresponding path program 1 times [2019-10-15 00:55:13,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:13,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141233925] [2019-10-15 00:55:13,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:13,992 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:13,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:14,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2019-10-15 00:55:14,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141233925] [2019-10-15 00:55:14,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397857520] [2019-10-15 00:55:14,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:15,249 INFO L256 TraceCheckSpWp]: Trace formula consists of 2530 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:55:15,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:55:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 618 trivial. 0 not checked. [2019-10-15 00:55:15,456 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:55:16,340 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 632 trivial. 0 not checked. [2019-10-15 00:55:16,340 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 00:55:16,341 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [6] total 6 [2019-10-15 00:55:16,341 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334010328] [2019-10-15 00:55:16,342 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:55:16,343 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:16,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:55:16,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:55:16,343 INFO L87 Difference]: Start difference. First operand 1811 states and 2334 transitions. Second operand 3 states. [2019-10-15 00:55:16,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:16,457 INFO L93 Difference]: Finished difference Result 2819 states and 3606 transitions. [2019-10-15 00:55:16,458 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:55:16,458 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 448 [2019-10-15 00:55:16,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:16,465 INFO L225 Difference]: With dead ends: 2819 [2019-10-15 00:55:16,465 INFO L226 Difference]: Without dead ends: 1028 [2019-10-15 00:55:16,471 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 898 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:55:16,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2019-10-15 00:55:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1028. [2019-10-15 00:55:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1028 states. [2019-10-15 00:55:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1298 transitions. [2019-10-15 00:55:16,527 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1298 transitions. Word has length 448 [2019-10-15 00:55:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:16,528 INFO L462 AbstractCegarLoop]: Abstraction has 1028 states and 1298 transitions. [2019-10-15 00:55:16,528 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:55:16,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1298 transitions. [2019-10-15 00:55:16,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2019-10-15 00:55:16,544 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:16,544 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:16,752 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:16,752 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:16,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:16,753 INFO L82 PathProgramCache]: Analyzing trace with hash 307794317, now seen corresponding path program 1 times [2019-10-15 00:55:16,753 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:16,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105893724] [2019-10-15 00:55:16,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:16,754 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:16,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:17,075 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 624 trivial. 0 not checked. [2019-10-15 00:55:17,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105893724] [2019-10-15 00:55:17,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:55:17,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 00:55:17,076 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80289270] [2019-10-15 00:55:17,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 00:55:17,077 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:17,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 00:55:17,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 00:55:17,079 INFO L87 Difference]: Start difference. First operand 1028 states and 1298 transitions. Second operand 6 states. [2019-10-15 00:55:17,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:17,206 INFO L93 Difference]: Finished difference Result 1753 states and 2244 transitions. [2019-10-15 00:55:17,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 00:55:17,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 454 [2019-10-15 00:55:17,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:17,213 INFO L225 Difference]: With dead ends: 1753 [2019-10-15 00:55:17,213 INFO L226 Difference]: Without dead ends: 1023 [2019-10-15 00:55:17,216 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:55:17,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2019-10-15 00:55:17,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1021. [2019-10-15 00:55:17,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1021 states. [2019-10-15 00:55:17,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1289 transitions. [2019-10-15 00:55:17,269 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1289 transitions. Word has length 454 [2019-10-15 00:55:17,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:17,270 INFO L462 AbstractCegarLoop]: Abstraction has 1021 states and 1289 transitions. [2019-10-15 00:55:17,270 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 00:55:17,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1289 transitions. [2019-10-15 00:55:17,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2019-10-15 00:55:17,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:17,280 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:17,280 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:17,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:17,280 INFO L82 PathProgramCache]: Analyzing trace with hash 71902264, now seen corresponding path program 1 times [2019-10-15 00:55:17,281 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:17,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573947362] [2019-10-15 00:55:17,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:17,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:17,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:18,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-10-15 00:55:18,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573947362] [2019-10-15 00:55:18,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845252702] [2019-10-15 00:55:18,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:19,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 3409 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:55:19,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:55:20,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 3982 trivial. 0 not checked. [2019-10-15 00:55:20,654 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:55:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 4057 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4049 trivial. 0 not checked. [2019-10-15 00:55:22,373 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 00:55:22,374 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [4] total 5 [2019-10-15 00:55:22,374 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834632272] [2019-10-15 00:55:22,376 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 00:55:22,376 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:22,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 00:55:22,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:55:22,377 INFO L87 Difference]: Start difference. First operand 1021 states and 1289 transitions. Second operand 4 states. [2019-10-15 00:55:23,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:23,223 INFO L93 Difference]: Finished difference Result 2546 states and 3258 transitions. [2019-10-15 00:55:23,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 00:55:23,223 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 791 [2019-10-15 00:55:23,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:23,240 INFO L225 Difference]: With dead ends: 2546 [2019-10-15 00:55:23,240 INFO L226 Difference]: Without dead ends: 2298 [2019-10-15 00:55:23,243 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 1585 GetRequests, 1580 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:55:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2019-10-15 00:55:23,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2296. [2019-10-15 00:55:23,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2296 states. [2019-10-15 00:55:23,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2296 states to 2296 states and 2979 transitions. [2019-10-15 00:55:23,373 INFO L78 Accepts]: Start accepts. Automaton has 2296 states and 2979 transitions. Word has length 791 [2019-10-15 00:55:23,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:23,375 INFO L462 AbstractCegarLoop]: Abstraction has 2296 states and 2979 transitions. [2019-10-15 00:55:23,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 00:55:23,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2296 states and 2979 transitions. [2019-10-15 00:55:23,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 797 [2019-10-15 00:55:23,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:23,394 INFO L380 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 14, 14, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:23,603 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:23,603 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:23,605 INFO L82 PathProgramCache]: Analyzing trace with hash 418544163, now seen corresponding path program 1 times [2019-10-15 00:55:23,605 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:23,606 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833015956] [2019-10-15 00:55:23,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:23,606 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:23,606 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 4068 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 4052 trivial. 0 not checked. [2019-10-15 00:55:24,378 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833015956] [2019-10-15 00:55:24,378 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:55:24,378 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-15 00:55:24,378 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79184087] [2019-10-15 00:55:24,380 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 00:55:24,380 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 00:55:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:55:24,381 INFO L87 Difference]: Start difference. First operand 2296 states and 2979 transitions. Second operand 7 states. [2019-10-15 00:55:24,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:24,593 INFO L93 Difference]: Finished difference Result 6318 states and 8271 transitions. [2019-10-15 00:55:24,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 00:55:24,593 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 796 [2019-10-15 00:55:24,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:24,624 INFO L225 Difference]: With dead ends: 6318 [2019-10-15 00:55:24,624 INFO L226 Difference]: Without dead ends: 4325 [2019-10-15 00:55:24,633 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-15 00:55:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2019-10-15 00:55:24,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 2316. [2019-10-15 00:55:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2316 states. [2019-10-15 00:55:24,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2316 states to 2316 states and 2999 transitions. [2019-10-15 00:55:24,781 INFO L78 Accepts]: Start accepts. Automaton has 2316 states and 2999 transitions. Word has length 796 [2019-10-15 00:55:24,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:24,783 INFO L462 AbstractCegarLoop]: Abstraction has 2316 states and 2999 transitions. [2019-10-15 00:55:24,783 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 00:55:24,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2316 states and 2999 transitions. [2019-10-15 00:55:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1005 [2019-10-15 00:55:24,802 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:24,803 INFO L380 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:24,803 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:24,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash 697134351, now seen corresponding path program 1 times [2019-10-15 00:55:24,804 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:24,804 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155546696] [2019-10-15 00:55:24,804 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:24,805 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:24,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:25,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 7082 trivial. 0 not checked. [2019-10-15 00:55:25,891 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155546696] [2019-10-15 00:55:25,892 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895148892] [2019-10-15 00:55:25,892 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:26,956 INFO L256 TraceCheckSpWp]: Trace formula consists of 3957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 00:55:26,988 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:55:27,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7085 trivial. 0 not checked. [2019-10-15 00:55:27,460 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:55:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7115 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 7088 trivial. 0 not checked. [2019-10-15 00:55:29,830 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 00:55:29,831 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 5 [2019-10-15 00:55:29,831 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921232139] [2019-10-15 00:55:29,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:55:29,833 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:55:29,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:55:29,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:55:29,834 INFO L87 Difference]: Start difference. First operand 2316 states and 2999 transitions. Second operand 3 states. [2019-10-15 00:55:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:55:29,978 INFO L93 Difference]: Finished difference Result 2345 states and 3026 transitions. [2019-10-15 00:55:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:55:29,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1004 [2019-10-15 00:55:29,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:55:29,995 INFO L225 Difference]: With dead ends: 2345 [2019-10-15 00:55:29,995 INFO L226 Difference]: Without dead ends: 2135 [2019-10-15 00:55:29,998 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2013 GetRequests, 2008 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-10-15 00:55:30,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2135 states. [2019-10-15 00:55:30,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2135 to 2135. [2019-10-15 00:55:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2135 states. [2019-10-15 00:55:30,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2135 states to 2135 states and 2783 transitions. [2019-10-15 00:55:30,111 INFO L78 Accepts]: Start accepts. Automaton has 2135 states and 2783 transitions. Word has length 1004 [2019-10-15 00:55:30,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:55:30,112 INFO L462 AbstractCegarLoop]: Abstraction has 2135 states and 2783 transitions. [2019-10-15 00:55:30,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:55:30,113 INFO L276 IsEmpty]: Start isEmpty. Operand 2135 states and 2783 transitions. [2019-10-15 00:55:30,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2019-10-15 00:55:30,131 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:55:30,134 INFO L380 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 20, 20, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:55:30,344 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:55:30,344 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:55:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:55:30,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1992523402, now seen corresponding path program 1 times [2019-10-15 00:55:30,346 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:55:30,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189049577] [2019-10-15 00:55:30,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:30,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:55:30,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:55:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:55:31,813 INFO L134 CoverageAnalysis]: Checked inductivity of 7099 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 7064 trivial. 0 not checked. [2019-10-15 00:55:31,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189049577] [2019-10-15 00:55:31,814 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477893504] [2019-10-15 00:55:31,814 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true