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-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:03:17,850 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:03:17,853 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:03:17,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:03:17,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:03:17,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:03:17,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:03:17,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:03:17,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:03:17,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:03:17,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:03:17,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:03:17,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:03:17,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:03:17,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:03:17,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:03:17,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:03:17,884 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:03:17,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:03:17,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:03:17,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:03:17,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:03:17,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:03:17,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:03:17,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:03:17,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:03:17,895 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:03:17,896 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:03:17,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:03:17,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:03:17,898 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:03:17,899 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:03:17,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:03:17,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:03:17,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:03:17,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:03:17,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:03:17,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:03:17,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:03:17,903 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:03:17,904 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:03:17,905 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 23:03:17,919 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:03:17,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:03:17,921 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:03:17,921 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:03:17,921 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:03:17,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:03:17,922 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:03:17,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:03:17,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:03:17,922 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:03:17,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:03:17,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:03:17,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:03:17,923 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:03:17,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:03:17,923 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:03:17,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:03:17,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:03:17,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:03:17,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:03:17,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:03:17,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:03:17,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:03:17,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:03:17,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:03:17,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:03:17,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:03:17,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:03:17,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:03:18,245 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:03:18,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:03:18,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:03:18,267 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:03:18,267 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:03:18,268 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-14 23:03:18,339 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baed49582/6088348cf6cb4108be7357811bb1bb5e/FLAG79a2871d0 [2019-10-14 23:03:19,142 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:03:19,143 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-14 23:03:19,183 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baed49582/6088348cf6cb4108be7357811bb1bb5e/FLAG79a2871d0 [2019-10-14 23:03:19,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baed49582/6088348cf6cb4108be7357811bb1bb5e [2019-10-14 23:03:19,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:03:19,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:03:19,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:03:19,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:03:19,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:03:19,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:03:19" (1/1) ... [2019-10-14 23:03:19,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de6d83a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:19, skipping insertion in model container [2019-10-14 23:03:19,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:03:19" (1/1) ... [2019-10-14 23:03:19,697 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:03:19,826 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:03:21,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:03:21,118 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:03:21,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:03:21,675 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:03:21,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21 WrapperNode [2019-10-14 23:03:21,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:03:21,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:03:21,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:03:21,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:03:21,698 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,698 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,789 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (1/1) ... [2019-10-14 23:03:21,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:03:21,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:03:21,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:03:21,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:03:21,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (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 23:03:22,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:03:22,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:03:22,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:03:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 23:03:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-14 23:03:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-14 23:03:22,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 23:03:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 23:03:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 23:03:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 23:03:22,063 INFO L138 BoogieDeclarations]: Found implementation of procedure always_connected [2019-10-14 23:03:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure m5632_recover [2019-10-14 23:03:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_prereset [2019-10-14 23:03:22,064 INFO L138 BoogieDeclarations]: Found implementation of procedure dummy_postreset [2019-10-14 23:03:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_init [2019-10-14 23:03:22,065 INFO L138 BoogieDeclarations]: Found implementation of procedure cdc_subset_driver_exit [2019-10-14 23:03:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-14 23:03:22,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:03:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2019-10-14 23:03:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_6 [2019-10-14 23:03:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_7 [2019-10-14 23:03:22,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_8 [2019-10-14 23:03:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_9 [2019-10-14 23:03:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-14 23:03:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_11 [2019-10-14 23:03:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_12 [2019-10-14 23:03:22,068 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv___ldv_usb_unlock_device_13 [2019-10-14 23:03:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-10-14 23:03:22,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-10-14 23:03:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 23:03:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-14 23:03:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-14 23:03:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-14 23:03:22,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-14 23:03:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-14 23:03:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-14 23:03:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-14 23:03:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-14 23:03:22,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-14 23:03:22,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-14 23:03:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-14 23:03:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-14 23:03:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-14 23:03:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-14 23:03:22,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2019-10-14 23:03:22,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2019-10-14 23:03:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2019-10-14 23:03:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-14 23:03:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-14 23:03:22,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-14 23:03:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-14 23:03:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-14 23:03:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-14 23:03:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-14 23:03:22,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2019-10-14 23:03:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-14 23:03:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-14 23:03:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-14 23:03:22,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_udev [2019-10-14 23:03:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_udev [2019-10-14 23:03:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_udev [2019-10-14 23:03:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_udev [2019-10-14 23:03:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-10-14 23:03:22,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_udev [2019-10-14 23:03:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_udev [2019-10-14 23:03:22,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_udev [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_udev [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_udev [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_udev [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_usb_unlock_device [2019-10-14 23:03:22,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:03:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-14 23:03:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-14 23:03:22,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-14 23:03:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-14 23:03:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 23:03:22,082 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 23:03:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2019-10-14 23:03:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-10-14 23:03:22,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-10-14 23:03:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-10-14 23:03:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-10-14 23:03:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 23:03:22,084 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 23:03:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 23:03:22,085 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 23:03:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:03:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 23:03:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-14 23:03:22,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_8 [2019-10-14 23:03:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-14 23:03:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_6 [2019-10-14 23:03:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_9 [2019-10-14 23:03:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-14 23:03:22,086 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:03:22,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:03:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:03:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 23:03:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 23:03:22,088 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-14 23:03:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-14 23:03:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 23:03:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 23:03:22,089 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 23:03:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 23:03:22,090 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 23:03:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_usb_unlock_device [2019-10-14 23:03:22,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv___ldv_usb_unlock_device_13 [2019-10-14 23:03:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-14 23:03:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2019-10-14 23:03:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_7 [2019-10-14 23:03:22,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_11 [2019-10-14 23:03:22,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-14 23:03:22,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-14 23:03:22,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-14 23:03:22,093 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-14 23:03:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-14 23:03:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-14 23:03:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-14 23:03:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_udev [2019-10-14 23:03:22,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_udev [2019-10-14 23:03:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-14 23:03:22,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_12 [2019-10-14 23:03:22,096 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2019-10-14 23:03:22,098 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 23:03:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-10-14 23:03:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 23:03:22,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-10-14 23:03:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-10-14 23:03:22,106 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-10-14 23:03:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-10-14 23:03:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-10-14 23:03:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure always_connected [2019-10-14 23:03:22,107 INFO L130 BoogieDeclarations]: Found specification of procedure m5632_recover [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_prereset [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure dummy_postreset [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_init [2019-10-14 23:03:22,108 INFO L130 BoogieDeclarations]: Found specification of procedure cdc_subset_driver_exit [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:03:22,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-14 23:03:22,110 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-14 23:03:22,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-14 23:03:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-14 23:03:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-14 23:03:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2019-10-14 23:03:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-14 23:03:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_udev [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_udev [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_udev [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_udev [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_udev [2019-10-14 23:03:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_udev [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_udev [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_udev [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_udev [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:03:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:03:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:03:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:03:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:03:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:03:22,797 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 23:03:24,165 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:03:24,166 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:03:24,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:03:24 BoogieIcfgContainer [2019-10-14 23:03:24,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:03:24,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:03:24,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:03:24,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:03:24,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:03:19" (1/3) ... [2019-10-14 23:03:24,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772f26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:03:24, skipping insertion in model container [2019-10-14 23:03:24,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:03:21" (2/3) ... [2019-10-14 23:03:24,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2772f26e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:03:24, skipping insertion in model container [2019-10-14 23:03:24,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:03:24" (3/3) ... [2019-10-14 23:03:24,176 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--net--usb--cdc_subset.ko-entry_point.cil.out.i [2019-10-14 23:03:24,185 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:03:24,199 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:03:24,211 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:03:24,247 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:03:24,247 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:03:24,247 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:03:24,247 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:03:24,247 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:03:24,247 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:03:24,248 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:03:24,248 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:03:24,285 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2019-10-14 23:03:24,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2019-10-14 23:03:24,305 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:24,306 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:24,308 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:24,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:24,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1808975188, now seen corresponding path program 1 times [2019-10-14 23:03:24,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:24,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382337193] [2019-10-14 23:03:24,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:24,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:24,321 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,566 WARN L191 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-14 23:03:25,938 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382337193] [2019-10-14 23:03:25,939 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:25,940 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:03:25,943 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439005548] [2019-10-14 23:03:25,950 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:03:25,950 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:25,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:03:25,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:03:25,971 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2019-10-14 23:03:26,500 WARN L191 SmtUtils]: Spent 492.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:27,119 WARN L191 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:27,620 WARN L191 SmtUtils]: Spent 410.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:30,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:30,584 INFO L93 Difference]: Finished difference Result 680 states and 902 transitions. [2019-10-14 23:03:30,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:03:30,587 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 102 [2019-10-14 23:03:30,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:30,606 INFO L225 Difference]: With dead ends: 680 [2019-10-14 23:03:30,606 INFO L226 Difference]: Without dead ends: 414 [2019-10-14 23:03:30,612 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:03:30,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2019-10-14 23:03:30,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 372. [2019-10-14 23:03:30,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2019-10-14 23:03:30,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 479 transitions. [2019-10-14 23:03:30,767 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 479 transitions. Word has length 102 [2019-10-14 23:03:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:30,768 INFO L462 AbstractCegarLoop]: Abstraction has 372 states and 479 transitions. [2019-10-14 23:03:30,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:03:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 479 transitions. [2019-10-14 23:03:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:03:30,784 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:30,784 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:30,785 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:30,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:30,785 INFO L82 PathProgramCache]: Analyzing trace with hash 649460153, now seen corresponding path program 1 times [2019-10-14 23:03:30,786 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:30,786 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555390477] [2019-10-14 23:03:30,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:30,787 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:30,787 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,432 WARN L191 SmtUtils]: Spent 367.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:31,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:31,706 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-10-14 23:03:31,706 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555390477] [2019-10-14 23:03:31,707 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:31,707 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 23:03:31,707 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802621171] [2019-10-14 23:03:31,710 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:03:31,710 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:31,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:03:31,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:03:31,711 INFO L87 Difference]: Start difference. First operand 372 states and 479 transitions. Second operand 8 states. [2019-10-14 23:03:32,145 WARN L191 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:33,299 WARN L191 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:33,967 WARN L191 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:35,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:35,681 INFO L93 Difference]: Finished difference Result 1005 states and 1312 transitions. [2019-10-14 23:03:35,682 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-14 23:03:35,682 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 105 [2019-10-14 23:03:35,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:35,690 INFO L225 Difference]: With dead ends: 1005 [2019-10-14 23:03:35,690 INFO L226 Difference]: Without dead ends: 665 [2019-10-14 23:03:35,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-10-14 23:03:35,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2019-10-14 23:03:35,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 631. [2019-10-14 23:03:35,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-14 23:03:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 826 transitions. [2019-10-14 23:03:35,791 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 826 transitions. Word has length 105 [2019-10-14 23:03:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:35,792 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 826 transitions. [2019-10-14 23:03:35,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:03:35,792 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 826 transitions. [2019-10-14 23:03:35,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:03:35,794 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:35,794 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:35,795 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:35,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:35,795 INFO L82 PathProgramCache]: Analyzing trace with hash -202503043, now seen corresponding path program 1 times [2019-10-14 23:03:35,795 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:35,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958091056] [2019-10-14 23:03:35,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:35,796 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:35,796 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,429 WARN L191 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:36,869 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-14 23:03:36,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958091056] [2019-10-14 23:03:36,870 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:36,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:03:36,871 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631972475] [2019-10-14 23:03:36,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:03:36,873 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:36,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:03:36,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:03:36,874 INFO L87 Difference]: Start difference. First operand 631 states and 826 transitions. Second operand 9 states. [2019-10-14 23:03:37,273 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:37,879 WARN L191 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:38,342 WARN L191 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:40,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:40,252 INFO L93 Difference]: Finished difference Result 683 states and 889 transitions. [2019-10-14 23:03:40,252 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:03:40,253 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-10-14 23:03:40,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:40,259 INFO L225 Difference]: With dead ends: 683 [2019-10-14 23:03:40,259 INFO L226 Difference]: Without dead ends: 672 [2019-10-14 23:03:40,261 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:03:40,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2019-10-14 23:03:40,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 631. [2019-10-14 23:03:40,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-10-14 23:03:40,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 825 transitions. [2019-10-14 23:03:40,340 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 825 transitions. Word has length 125 [2019-10-14 23:03:40,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:40,341 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 825 transitions. [2019-10-14 23:03:40,341 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:03:40,341 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 825 transitions. [2019-10-14 23:03:40,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2019-10-14 23:03:40,343 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:40,343 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:40,343 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:40,344 INFO L82 PathProgramCache]: Analyzing trace with hash -145244741, now seen corresponding path program 1 times [2019-10-14 23:03:40,344 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:40,344 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966780711] [2019-10-14 23:03:40,344 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:40,345 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:40,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,068 WARN L191 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:41,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:41,431 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-14 23:03:41,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966780711] [2019-10-14 23:03:41,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:41,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:03:41,432 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540898937] [2019-10-14 23:03:41,433 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:03:41,433 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:41,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:03:41,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:03:41,434 INFO L87 Difference]: Start difference. First operand 631 states and 825 transitions. Second operand 9 states. [2019-10-14 23:03:41,882 WARN L191 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:42,543 WARN L191 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:42,966 WARN L191 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:44,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:44,878 INFO L93 Difference]: Finished difference Result 663 states and 863 transitions. [2019-10-14 23:03:44,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:03:44,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 125 [2019-10-14 23:03:44,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:44,884 INFO L225 Difference]: With dead ends: 663 [2019-10-14 23:03:44,885 INFO L226 Difference]: Without dead ends: 660 [2019-10-14 23:03:44,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:03:44,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2019-10-14 23:03:44,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 630. [2019-10-14 23:03:44,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 630 states. [2019-10-14 23:03:44,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 823 transitions. [2019-10-14 23:03:44,954 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 823 transitions. Word has length 125 [2019-10-14 23:03:44,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:44,955 INFO L462 AbstractCegarLoop]: Abstraction has 630 states and 823 transitions. [2019-10-14 23:03:44,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:03:44,955 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 823 transitions. [2019-10-14 23:03:44,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2019-10-14 23:03:44,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:44,957 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:44,957 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:44,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:44,958 INFO L82 PathProgramCache]: Analyzing trace with hash -207810934, now seen corresponding path program 1 times [2019-10-14 23:03:44,958 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:44,958 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596430231] [2019-10-14 23:03:44,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:44,958 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:44,958 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,486 WARN L191 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:45,902 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-14 23:03:45,902 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596430231] [2019-10-14 23:03:45,902 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:45,903 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:03:45,903 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391344739] [2019-10-14 23:03:45,903 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:03:45,907 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:45,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:03:45,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:03:45,908 INFO L87 Difference]: Start difference. First operand 630 states and 823 transitions. Second operand 9 states. [2019-10-14 23:03:46,299 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:46,848 WARN L191 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:47,287 WARN L191 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:49,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:49,401 INFO L93 Difference]: Finished difference Result 662 states and 861 transitions. [2019-10-14 23:03:49,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:03:49,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 126 [2019-10-14 23:03:49,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:49,406 INFO L225 Difference]: With dead ends: 662 [2019-10-14 23:03:49,406 INFO L226 Difference]: Without dead ends: 659 [2019-10-14 23:03:49,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:03:49,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2019-10-14 23:03:49,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 629. [2019-10-14 23:03:49,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 629 states. [2019-10-14 23:03:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 629 states to 629 states and 821 transitions. [2019-10-14 23:03:49,477 INFO L78 Accepts]: Start accepts. Automaton has 629 states and 821 transitions. Word has length 126 [2019-10-14 23:03:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:49,477 INFO L462 AbstractCegarLoop]: Abstraction has 629 states and 821 transitions. [2019-10-14 23:03:49,477 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:03:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 629 states and 821 transitions. [2019-10-14 23:03:49,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2019-10-14 23:03:49,479 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:49,480 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:49,480 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:49,481 INFO L82 PathProgramCache]: Analyzing trace with hash -2147358050, now seen corresponding path program 1 times [2019-10-14 23:03:49,481 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:49,481 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801781985] [2019-10-14 23:03:49,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:49,481 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:49,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:49,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,057 WARN L191 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2019-10-14 23:03:50,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:03:50,415 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-10-14 23:03:50,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801781985] [2019-10-14 23:03:50,416 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:03:50,416 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-14 23:03:50,416 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499172795] [2019-10-14 23:03:50,417 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:03:50,417 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:03:50,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:03:50,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:03:50,417 INFO L87 Difference]: Start difference. First operand 629 states and 821 transitions. Second operand 9 states. [2019-10-14 23:03:50,864 WARN L191 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2019-10-14 23:03:51,500 WARN L191 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 243 [2019-10-14 23:03:51,925 WARN L191 SmtUtils]: Spent 366.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2019-10-14 23:03:53,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:03:53,826 INFO L93 Difference]: Finished difference Result 661 states and 859 transitions. [2019-10-14 23:03:53,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:03:53,833 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 127 [2019-10-14 23:03:53,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:03:53,838 INFO L225 Difference]: With dead ends: 661 [2019-10-14 23:03:53,838 INFO L226 Difference]: Without dead ends: 658 [2019-10-14 23:03:53,839 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:03:53,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2019-10-14 23:03:53,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 628. [2019-10-14 23:03:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2019-10-14 23:03:53,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 819 transitions. [2019-10-14 23:03:53,910 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 819 transitions. Word has length 127 [2019-10-14 23:03:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:03:53,910 INFO L462 AbstractCegarLoop]: Abstraction has 628 states and 819 transitions. [2019-10-14 23:03:53,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:03:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 819 transitions. [2019-10-14 23:03:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-10-14 23:03:53,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:03:53,913 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:53,913 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:03:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:03:53,913 INFO L82 PathProgramCache]: Analyzing trace with hash -2143771635, now seen corresponding path program 1 times [2019-10-14 23:03:53,914 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:03:53,914 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074596433] [2019-10-14 23:03:53,914 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:53,914 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:03:53,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:03:53,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat