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 -i ../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:19:09,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:19:09,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:19:09,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:19:09,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:19:09,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:19:09,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:19:09,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:19:09,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:19:09,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:19:09,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:19:09,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:19:09,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:19:09,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:19:09,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:19:09,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:19:09,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:19:09,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:19:09,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:19:09,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:19:09,907 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:19:09,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:19:09,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:19:09,909 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:19:09,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:19:09,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:19:09,912 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:19:09,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:19:09,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:19:09,914 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:19:09,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:19:09,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:19:09,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:19:09,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:19:09,917 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:19:09,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:19:09,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:19:09,918 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:19:09,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:19:09,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:19:09,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:19:09,920 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 [2019-10-14 22:19:09,939 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:19:09,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:19:09,940 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:19:09,945 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:19:09,945 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:19:09,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:19:09,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:19:09,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:19:09,948 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:19:09,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:19:09,948 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:19:09,948 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:19:09,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:19:09,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:19:09,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:19:09,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:19:09,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:19:09,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:19:09,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:19:09,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:19:09,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:19:09,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:19:09,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:19:09,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:19:10,204 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:19:10,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:19:10,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:19:10,221 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:19:10,221 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:19:10,222 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2019-10-14 22:19:10,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97d52459/2f3bad166bfc43678ab883e4face1b25/FLAG7a3fc04c0 [2019-10-14 22:19:10,985 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:19:10,986 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.0/usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2019-10-14 22:19:11,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97d52459/2f3bad166bfc43678ab883e4face1b25/FLAG7a3fc04c0 [2019-10-14 22:19:11,133 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a97d52459/2f3bad166bfc43678ab883e4face1b25 [2019-10-14 22:19:11,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:19:11,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:19:11,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:19:11,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:19:11,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:19:11,148 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:19:11" (1/1) ... [2019-10-14 22:19:11,150 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596ca61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:11, skipping insertion in model container [2019-10-14 22:19:11,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:19:11" (1/1) ... [2019-10-14 22:19:11,157 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:19:11,245 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:19:12,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:19:12,206 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:19:12,431 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:19:12,538 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:19:12,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12 WrapperNode [2019-10-14 22:19:12,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:19:12,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:19:12,542 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:19:12,542 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:19:12,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,670 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (1/1) ... [2019-10-14 22:19:12,705 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:19:12,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:19:12,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:19:12,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:19:12,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (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 [2019-10-14 22:19:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:19:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:19:12,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __le16_to_cpup [2019-10-14 22:19:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-14 22:19:12,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-14 22:19:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2019-10-14 22:19:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2019-10-14 22:19:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-14 22:19:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-10-14 22:19:12,782 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-14 22:19:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-14 22:19:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-14 22:19:12,783 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-10-14 22:19:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-10-14 22:19:12,784 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-10-14 22:19:12,785 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-10-14 22:19:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-10-14 22:19:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-10-14 22:19:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-10-14 22:19:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_le16 [2019-10-14 22:19:12,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_irq [2019-10-14 22:19:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_open [2019-10-14 22:19:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_close [2019-10-14 22:19:12,788 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_probe [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_disconnect [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_init [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure kbtab_exit [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure init_module [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup_module [2019-10-14 22:19:12,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-14 22:19:12,790 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-10-14 22:19:12,791 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:19:12,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 22:19:12,793 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-14 22:19:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:19:12,794 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure __le16_to_cpup [2019-10-14 22:19:12,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-14 22:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-14 22:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-10-14 22:19:12,795 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-14 22:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-14 22:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-14 22:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure init_module [2019-10-14 22:19:12,796 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup_module [2019-10-14 22:19:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-14 22:19:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-14 22:19:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2019-10-14 22:19:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2019-10-14 22:19:12,797 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-14 22:19:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:19:12,798 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-10-14 22:19:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:19:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 22:19:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-14 22:19:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 22:19:12,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-14 22:19:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:19:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:19:12,800 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-14 22:19:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-14 22:19:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-14 22:19:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-14 22:19:12,801 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-10-14 22:19:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-10-14 22:19:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-14 22:19:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-10-14 22:19:12,802 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-10-14 22:19:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-10-14 22:19:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-10-14 22:19:12,803 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-10-14 22:19:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-10-14 22:19:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-10-14 22:19:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-10-14 22:19:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-10-14 22:19:12,804 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_le16 [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_irq [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_open [2019-10-14 22:19:12,805 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_close [2019-10-14 22:19:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_probe [2019-10-14 22:19:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_disconnect [2019-10-14 22:19:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_init [2019-10-14 22:19:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure kbtab_exit [2019-10-14 22:19:12,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2019-10-14 22:19:12,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2019-10-14 22:19:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2019-10-14 22:19:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:19:12,808 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:19:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:19:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:19:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:19:12,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:19:12,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:19:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:19:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:19:13,493 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 22:19:13,538 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2019-10-14 22:19:13,539 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2019-10-14 22:19:13,957 WARN L732 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-10-14 22:19:14,028 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2019-10-14 22:19:14,029 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2019-10-14 22:19:14,231 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2019-10-14 22:19:14,641 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:19:14,641 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-14 22:19:14,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:19:14 BoogieIcfgContainer [2019-10-14 22:19:14,643 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:19:14,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:19:14,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:19:14,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:19:14,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:19:11" (1/3) ... [2019-10-14 22:19:14,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33caaea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:19:14, skipping insertion in model container [2019-10-14 22:19:14,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:19:12" (2/3) ... [2019-10-14 22:19:14,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33caaea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:19:14, skipping insertion in model container [2019-10-14 22:19:14,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:19:14" (3/3) ... [2019-10-14 22:19:14,651 INFO L109 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-input-tablet-kbtab.ko.cil.out.i [2019-10-14 22:19:14,660 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:19:14,669 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:19:14,680 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:19:14,706 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:19:14,706 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:19:14,706 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:19:14,706 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:19:14,706 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:19:14,707 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:19:14,707 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:19:14,707 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:19:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states. [2019-10-14 22:19:14,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 22:19:14,736 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:14,737 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:19:14,739 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:14,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:14,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1845057656, now seen corresponding path program 1 times [2019-10-14 22:19:14,753 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:14,754 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145334997] [2019-10-14 22:19:14,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:14,754 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:14,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,455 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:15,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:19:15,580 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145334997] [2019-10-14 22:19:15,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:15,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:19:15,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528838741] [2019-10-14 22:19:15,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:19:15,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:15,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:19:15,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:19:15,604 INFO L87 Difference]: Start difference. First operand 282 states. Second operand 4 states. [2019-10-14 22:19:16,014 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-14 22:19:19,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:19,490 INFO L93 Difference]: Finished difference Result 776 states and 1000 transitions. [2019-10-14 22:19:19,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:19:19,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-14 22:19:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:19,512 INFO L225 Difference]: With dead ends: 776 [2019-10-14 22:19:19,512 INFO L226 Difference]: Without dead ends: 537 [2019-10-14 22:19:19,519 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:19:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2019-10-14 22:19:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 475. [2019-10-14 22:19:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2019-10-14 22:19:19,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 558 transitions. [2019-10-14 22:19:19,719 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 558 transitions. Word has length 31 [2019-10-14 22:19:19,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:19,720 INFO L462 AbstractCegarLoop]: Abstraction has 475 states and 558 transitions. [2019-10-14 22:19:19,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:19:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 558 transitions. [2019-10-14 22:19:19,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-14 22:19:19,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:19,721 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:19:19,722 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:19,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1362410536, now seen corresponding path program 1 times [2019-10-14 22:19:19,723 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:19,723 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181287839] [2019-10-14 22:19:19,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:19,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:19,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:19,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,005 WARN L191 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:20,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:19:20,072 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181287839] [2019-10-14 22:19:20,073 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:20,073 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:19:20,073 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160316704] [2019-10-14 22:19:20,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:19:20,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:20,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:19:20,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:19:20,076 INFO L87 Difference]: Start difference. First operand 475 states and 558 transitions. Second operand 4 states. [2019-10-14 22:19:20,413 WARN L191 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-14 22:19:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:23,567 INFO L93 Difference]: Finished difference Result 1437 states and 1737 transitions. [2019-10-14 22:19:23,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 22:19:23,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2019-10-14 22:19:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:23,577 INFO L225 Difference]: With dead ends: 1437 [2019-10-14 22:19:23,578 INFO L226 Difference]: Without dead ends: 979 [2019-10-14 22:19:23,586 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 22:19:23,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2019-10-14 22:19:23,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 928. [2019-10-14 22:19:23,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2019-10-14 22:19:23,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1105 transitions. [2019-10-14 22:19:23,741 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1105 transitions. Word has length 32 [2019-10-14 22:19:23,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:23,741 INFO L462 AbstractCegarLoop]: Abstraction has 928 states and 1105 transitions. [2019-10-14 22:19:23,741 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:19:23,741 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1105 transitions. [2019-10-14 22:19:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-14 22:19:23,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:23,744 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:19:23,745 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:23,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:23,745 INFO L82 PathProgramCache]: Analyzing trace with hash 318886314, now seen corresponding path program 1 times [2019-10-14 22:19:23,745 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:23,746 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246405773] [2019-10-14 22:19:23,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:23,746 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:23,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,093 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:24,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:19:24,259 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246405773] [2019-10-14 22:19:24,260 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:24,260 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 22:19:24,260 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370785166] [2019-10-14 22:19:24,262 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 22:19:24,262 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:24,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 22:19:24,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:19:24,263 INFO L87 Difference]: Start difference. First operand 928 states and 1105 transitions. Second operand 7 states. [2019-10-14 22:19:24,758 WARN L191 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-10-14 22:19:24,999 WARN L191 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2019-10-14 22:19:27,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:27,691 INFO L93 Difference]: Finished difference Result 1878 states and 2257 transitions. [2019-10-14 22:19:27,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 22:19:27,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 74 [2019-10-14 22:19:27,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:27,699 INFO L225 Difference]: With dead ends: 1878 [2019-10-14 22:19:27,699 INFO L226 Difference]: Without dead ends: 972 [2019-10-14 22:19:27,702 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:19:27,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2019-10-14 22:19:27,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 928. [2019-10-14 22:19:27,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 928 states. [2019-10-14 22:19:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 928 states to 928 states and 1104 transitions. [2019-10-14 22:19:27,820 INFO L78 Accepts]: Start accepts. Automaton has 928 states and 1104 transitions. Word has length 74 [2019-10-14 22:19:27,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:27,821 INFO L462 AbstractCegarLoop]: Abstraction has 928 states and 1104 transitions. [2019-10-14 22:19:27,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 22:19:27,821 INFO L276 IsEmpty]: Start isEmpty. Operand 928 states and 1104 transitions. [2019-10-14 22:19:27,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-14 22:19:27,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:27,823 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 22:19:27,824 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:27,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:27,824 INFO L82 PathProgramCache]: Analyzing trace with hash 762786988, now seen corresponding path program 1 times [2019-10-14 22:19:27,824 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:27,824 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883343499] [2019-10-14 22:19:27,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:27,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:27,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,096 WARN L191 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:28,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:28,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 22:19:28,210 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883343499] [2019-10-14 22:19:28,210 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:28,211 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 22:19:28,211 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381508814] [2019-10-14 22:19:28,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:19:28,212 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:28,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:19:28,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:19:28,214 INFO L87 Difference]: Start difference. First operand 928 states and 1104 transitions. Second operand 4 states. [2019-10-14 22:19:30,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:30,437 INFO L93 Difference]: Finished difference Result 1909 states and 2310 transitions. [2019-10-14 22:19:30,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 22:19:30,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2019-10-14 22:19:30,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:30,445 INFO L225 Difference]: With dead ends: 1909 [2019-10-14 22:19:30,445 INFO L226 Difference]: Without dead ends: 1007 [2019-10-14 22:19:30,449 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 22:19:30,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2019-10-14 22:19:30,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 963. [2019-10-14 22:19:30,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2019-10-14 22:19:30,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1150 transitions. [2019-10-14 22:19:30,668 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1150 transitions. Word has length 74 [2019-10-14 22:19:30,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:30,669 INFO L462 AbstractCegarLoop]: Abstraction has 963 states and 1150 transitions. [2019-10-14 22:19:30,670 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:19:30,670 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1150 transitions. [2019-10-14 22:19:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 22:19:30,684 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:30,685 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-14 22:19:30,686 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:30,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:30,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1064835193, now seen corresponding path program 1 times [2019-10-14 22:19:30,686 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:30,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726110676] [2019-10-14 22:19:30,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:30,687 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:30,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:30,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,175 WARN L191 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 22:19:31,375 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726110676] [2019-10-14 22:19:31,375 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:31,375 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:19:31,376 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668876774] [2019-10-14 22:19:31,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:19:31,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:31,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:19:31,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:19:31,380 INFO L87 Difference]: Start difference. First operand 963 states and 1150 transitions. Second operand 8 states. [2019-10-14 22:19:32,553 WARN L191 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 155 [2019-10-14 22:19:32,826 WARN L191 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-10-14 22:19:33,073 WARN L191 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2019-10-14 22:19:34,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:34,393 INFO L93 Difference]: Finished difference Result 1608 states and 1927 transitions. [2019-10-14 22:19:34,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 22:19:34,393 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 129 [2019-10-14 22:19:34,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:34,399 INFO L225 Difference]: With dead ends: 1608 [2019-10-14 22:19:34,399 INFO L226 Difference]: Without dead ends: 672 [2019-10-14 22:19:34,402 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:19:34,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-10-14 22:19:34,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 645. [2019-10-14 22:19:34,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 645 states. [2019-10-14 22:19:34,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 756 transitions. [2019-10-14 22:19:34,470 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 756 transitions. Word has length 129 [2019-10-14 22:19:34,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:34,470 INFO L462 AbstractCegarLoop]: Abstraction has 645 states and 756 transitions. [2019-10-14 22:19:34,470 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:19:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 756 transitions. [2019-10-14 22:19:34,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2019-10-14 22:19:34,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:34,473 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 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] [2019-10-14 22:19:34,473 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:34,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:34,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1415635130, now seen corresponding path program 1 times [2019-10-14 22:19:34,474 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:34,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454951952] [2019-10-14 22:19:34,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:34,474 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:34,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,781 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:35,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:35,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 22:19:35,075 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454951952] [2019-10-14 22:19:35,076 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:35,076 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 22:19:35,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752693946] [2019-10-14 22:19:35,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:19:35,079 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:35,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:19:35,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:19:35,079 INFO L87 Difference]: Start difference. First operand 645 states and 756 transitions. Second operand 9 states. [2019-10-14 22:19:35,449 WARN L191 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-14 22:19:36,536 WARN L191 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2019-10-14 22:19:38,129 WARN L191 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 151 [2019-10-14 22:19:40,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:40,431 INFO L93 Difference]: Finished difference Result 1193 states and 1430 transitions. [2019-10-14 22:19:40,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 22:19:40,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 129 [2019-10-14 22:19:40,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:40,438 INFO L225 Difference]: With dead ends: 1193 [2019-10-14 22:19:40,439 INFO L226 Difference]: Without dead ends: 1190 [2019-10-14 22:19:40,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2019-10-14 22:19:40,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-10-14 22:19:40,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1125. [2019-10-14 22:19:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2019-10-14 22:19:40,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1349 transitions. [2019-10-14 22:19:40,571 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1349 transitions. Word has length 129 [2019-10-14 22:19:40,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:40,571 INFO L462 AbstractCegarLoop]: Abstraction has 1125 states and 1349 transitions. [2019-10-14 22:19:40,571 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:19:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1349 transitions. [2019-10-14 22:19:40,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2019-10-14 22:19:40,573 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:40,574 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-14 22:19:40,574 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:40,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:40,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1340956888, now seen corresponding path program 1 times [2019-10-14 22:19:40,575 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:40,575 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462165413] [2019-10-14 22:19:40,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:40,575 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:40,575 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:40,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,901 WARN L191 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:40,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:41,246 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-14 22:19:41,246 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462165413] [2019-10-14 22:19:41,246 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:41,247 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 22:19:41,247 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217264224] [2019-10-14 22:19:41,247 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:19:41,248 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:41,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:19:41,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:19:41,254 INFO L87 Difference]: Start difference. First operand 1125 states and 1349 transitions. Second operand 9 states. [2019-10-14 22:19:41,583 WARN L191 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-10-14 22:19:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:19:44,411 INFO L93 Difference]: Finished difference Result 2176 states and 2682 transitions. [2019-10-14 22:19:44,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 22:19:44,411 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 132 [2019-10-14 22:19:44,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:19:44,419 INFO L225 Difference]: With dead ends: 2176 [2019-10-14 22:19:44,419 INFO L226 Difference]: Without dead ends: 1211 [2019-10-14 22:19:44,422 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:19:44,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2019-10-14 22:19:44,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 1125. [2019-10-14 22:19:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1125 states. [2019-10-14 22:19:44,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1345 transitions. [2019-10-14 22:19:44,590 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1345 transitions. Word has length 132 [2019-10-14 22:19:44,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:19:44,590 INFO L462 AbstractCegarLoop]: Abstraction has 1125 states and 1345 transitions. [2019-10-14 22:19:44,590 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 22:19:44,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1345 transitions. [2019-10-14 22:19:44,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-14 22:19:44,592 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:19:44,593 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 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] [2019-10-14 22:19:44,593 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:19:44,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:19:44,593 INFO L82 PathProgramCache]: Analyzing trace with hash -986593187, now seen corresponding path program 1 times [2019-10-14 22:19:44,594 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:19:44,594 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796496380] [2019-10-14 22:19:44,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:44,594 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:19:44,594 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:19:44,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,910 WARN L191 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2019-10-14 22:19:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:19:45,180 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-14 22:19:45,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796496380] [2019-10-14 22:19:45,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:19:45,180 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 22:19:45,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600570804] [2019-10-14 22:19:45,181 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 22:19:45,181 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:19:45,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 22:19:45,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-10-14 22:19:45,182 INFO L87 Difference]: Start difference. First operand 1125 states and 1345 transitions. Second operand 9 states. [2019-10-14 22:19:45,413 WARN L191 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2019-10-14 22:19:46,135 WARN L191 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2019-10-14 22:19:46,787 WARN L191 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 161