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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:21:37,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:21:37,770 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:21:37,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:21:37,792 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:21:37,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:21:37,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:21:37,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:21:37,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:21:37,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:21:37,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:21:37,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:21:37,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:21:37,822 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:21:37,825 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:21:37,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:21:37,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:21:37,832 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:21:37,834 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:21:37,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:21:37,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:21:37,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:21:37,854 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:21:37,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:21:37,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:21:37,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:21:37,859 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:21:37,861 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:21:37,863 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:21:37,864 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:21:37,864 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:21:37,866 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:21:37,867 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:21:37,868 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:21:37,870 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:21:37,870 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:21:37,871 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:21:37,871 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:21:37,871 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:21:37,872 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:21:37,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:21:37,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 02:21:37,895 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:21:37,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:21:37,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:21:37,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:21:37,898 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:21:37,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:21:37,899 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:21:37,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:21:37,899 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:21:37,899 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:21:37,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:21:37,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:21:37,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:21:37,902 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:21:37,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:21:37,902 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:21:37,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:21:37,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:21:37,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:21:37,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:21:37,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:21:37,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:21:37,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:21:37,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:21:37,904 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:21:37,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:21:37,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:21:37,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:21:37,905 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 02:21:38,190 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:21:38,211 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:21:38,215 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:21:38,217 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:21:38,217 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:21:38,218 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-15 02:21:38,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249e0ab24/9b9a281a7c264a41810d832726ee2f30/FLAG0033cdf6f [2019-10-15 02:21:39,093 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:21:39,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-15 02:21:39,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249e0ab24/9b9a281a7c264a41810d832726ee2f30/FLAG0033cdf6f [2019-10-15 02:21:39,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/249e0ab24/9b9a281a7c264a41810d832726ee2f30 [2019-10-15 02:21:39,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:21:39,659 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:21:39,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:21:39,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:21:39,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:21:39,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:21:39" (1/1) ... [2019-10-15 02:21:39,667 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573a9846 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:39, skipping insertion in model container [2019-10-15 02:21:39,667 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:21:39" (1/1) ... [2019-10-15 02:21:39,675 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:21:39,782 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:21:41,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:21:41,316 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:21:41,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:21:41,756 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:21:41,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41 WrapperNode [2019-10-15 02:21:41,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:21:41,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:21:41,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:21:41,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:21:41,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... [2019-10-15 02:21:41,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:21:41,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:21:41,921 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:21:41,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:21:41,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:21:41,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:21:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:21:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:21:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:21:41,991 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 02:21:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-15 02:21:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:21:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:21:41,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:21:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:21:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:21:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:21:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:21:41,993 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:21:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:21:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-10-15 02:21:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-15 02:21:41,994 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2019-10-15 02:21:41,995 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_bind [2019-10-15 02:21:41,995 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_unbind [2019-10-15 02:21:41,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2019-10-15 02:21:41,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2019-10-15 02:21:41,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_init [2019-10-15 02:21:41,996 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_exit [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-15 02:21:41,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-15 02:21:41,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-15 02:21:41,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-15 02:21:41,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-10-15 02:21:41,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-10-15 02:21:41,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-10-15 02:21:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-15 02:21:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 02:21:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-15 02:21:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-15 02:21:42,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-15 02:21:42,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-15 02:21:42,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2019-10-15 02:21:42,003 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 02:21:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-15 02:21:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-15 02:21:42,004 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-10-15 02:21:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2019-10-15 02:21:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-15 02:21:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-15 02:21:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2019-10-15 02:21:42,005 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-10-15 02:21:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2019-10-15 02:21:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-10-15 02:21:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-10-15 02:21:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2019-10-15 02:21:42,006 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-10-15 02:21:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:21:42,007 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:21:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:21:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:21:42,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:21:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:21:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:21:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:21:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-10-15 02:21:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:21:42,010 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:21:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:21:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:21:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 02:21:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-15 02:21:42,011 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-15 02:21:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-15 02:21:42,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2019-10-15 02:21:42,013 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-15 02:21:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-15 02:21:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 02:21:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-15 02:21:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:21:42,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:21:42,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:21:42,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:21:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:21:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:21:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:21:42,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:21:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:21:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2019-10-15 02:21:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-15 02:21:42,018 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2019-10-15 02:21:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-10-15 02:21:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-15 02:21:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-10-15 02:21:42,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-15 02:21:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-10-15 02:21:42,020 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2019-10-15 02:21:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2019-10-15 02:21:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-15 02:21:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:21:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:21:42,021 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-10-15 02:21:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-10-15 02:21:42,022 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-10-15 02:21:42,023 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:21:42,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:21:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:21:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_bind [2019-10-15 02:21:42,027 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_unbind [2019-10-15 02:21:42,028 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2019-10-15 02:21:42,035 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2019-10-15 02:21:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_init [2019-10-15 02:21:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_exit [2019-10-15 02:21:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-15 02:21:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:21:42,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:21:42,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 02:21:42,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:21:42,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:21:42,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:21:42,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:21:42,651 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:21:46,024 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:21:46,024 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 02:21:46,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:21:46 BoogieIcfgContainer [2019-10-15 02:21:46,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:21:46,027 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:21:46,027 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:21:46,030 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:21:46,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:21:39" (1/3) ... [2019-10-15 02:21:46,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a0c64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:21:46, skipping insertion in model container [2019-10-15 02:21:46,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:21:41" (2/3) ... [2019-10-15 02:21:46,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73a0c64f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:21:46, skipping insertion in model container [2019-10-15 02:21:46,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:21:46" (3/3) ... [2019-10-15 02:21:46,034 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-10-15 02:21:46,044 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:21:46,054 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:21:46,067 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:21:46,096 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:21:46,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:21:46,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:21:46,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:21:46,097 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:21:46,097 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:21:46,097 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:21:46,097 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:21:46,125 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states. [2019-10-15 02:21:46,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-15 02:21:46,138 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:46,140 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:21:46,142 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:46,149 INFO L82 PathProgramCache]: Analyzing trace with hash 708915959, now seen corresponding path program 1 times [2019-10-15 02:21:46,161 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:46,162 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231986378] [2019-10-15 02:21:46,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:46,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:46,163 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:46,822 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-15 02:21:46,823 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231986378] [2019-10-15 02:21:46,824 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:46,824 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:46,824 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164346896] [2019-10-15 02:21:46,830 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:46,830 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:46,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:46,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:46,849 INFO L87 Difference]: Start difference. First operand 361 states. Second operand 3 states. [2019-10-15 02:21:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:47,446 INFO L93 Difference]: Finished difference Result 968 states and 1280 transitions. [2019-10-15 02:21:47,450 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:47,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-10-15 02:21:47,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:47,494 INFO L225 Difference]: With dead ends: 968 [2019-10-15 02:21:47,495 INFO L226 Difference]: Without dead ends: 617 [2019-10-15 02:21:47,510 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:47,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-15 02:21:47,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-10-15 02:21:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-10-15 02:21:47,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 801 transitions. [2019-10-15 02:21:47,684 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 801 transitions. Word has length 53 [2019-10-15 02:21:47,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:47,685 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 801 transitions. [2019-10-15 02:21:47,685 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 801 transitions. [2019-10-15 02:21:47,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-10-15 02:21:47,691 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:47,691 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-15 02:21:47,691 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:47,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:47,692 INFO L82 PathProgramCache]: Analyzing trace with hash 135869433, now seen corresponding path program 1 times [2019-10-15 02:21:47,692 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:47,692 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449794374] [2019-10-15 02:21:47,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:47,693 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:47,693 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:47,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-10-15 02:21:47,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449794374] [2019-10-15 02:21:47,972 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:47,972 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-15 02:21:47,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650059913] [2019-10-15 02:21:47,974 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:21:47,974 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:47,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:21:47,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:21:47,975 INFO L87 Difference]: Start difference. First operand 617 states and 801 transitions. Second operand 6 states. [2019-10-15 02:21:48,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:48,910 INFO L93 Difference]: Finished difference Result 1218 states and 1593 transitions. [2019-10-15 02:21:48,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 02:21:48,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-10-15 02:21:48,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:48,921 INFO L225 Difference]: With dead ends: 1218 [2019-10-15 02:21:48,921 INFO L226 Difference]: Without dead ends: 1197 [2019-10-15 02:21:48,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 02:21:48,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2019-10-15 02:21:48,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2019-10-15 02:21:48,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-10-15 02:21:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1570 transitions. [2019-10-15 02:21:49,006 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1570 transitions. Word has length 67 [2019-10-15 02:21:49,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:49,006 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1570 transitions. [2019-10-15 02:21:49,007 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 02:21:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1570 transitions. [2019-10-15 02:21:49,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-10-15 02:21:49,020 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:49,020 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-15 02:21:49,021 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:49,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:49,021 INFO L82 PathProgramCache]: Analyzing trace with hash 619420607, now seen corresponding path program 1 times [2019-10-15 02:21:49,021 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:49,022 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611132700] [2019-10-15 02:21:49,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,022 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:49,224 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-15 02:21:49,225 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611132700] [2019-10-15 02:21:49,225 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:49,225 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:49,225 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048816262] [2019-10-15 02:21:49,226 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:49,226 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:49,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:49,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:49,227 INFO L87 Difference]: Start difference. First operand 1197 states and 1570 transitions. Second operand 3 states. [2019-10-15 02:21:49,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:49,359 INFO L93 Difference]: Finished difference Result 2659 states and 3487 transitions. [2019-10-15 02:21:49,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:49,360 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-10-15 02:21:49,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:49,369 INFO L225 Difference]: With dead ends: 2659 [2019-10-15 02:21:49,369 INFO L226 Difference]: Without dead ends: 1482 [2019-10-15 02:21:49,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2019-10-15 02:21:49,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1461. [2019-10-15 02:21:49,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2019-10-15 02:21:49,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1916 transitions. [2019-10-15 02:21:49,475 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1916 transitions. Word has length 106 [2019-10-15 02:21:49,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:49,478 INFO L462 AbstractCegarLoop]: Abstraction has 1461 states and 1916 transitions. [2019-10-15 02:21:49,478 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:49,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1916 transitions. [2019-10-15 02:21:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-15 02:21:49,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:49,485 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:21:49,485 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:49,485 INFO L82 PathProgramCache]: Analyzing trace with hash -397243396, now seen corresponding path program 1 times [2019-10-15 02:21:49,486 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:49,487 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450453460] [2019-10-15 02:21:49,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,487 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:49,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:49,708 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-15 02:21:49,710 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450453460] [2019-10-15 02:21:49,711 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:49,711 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:21:49,711 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129338527] [2019-10-15 02:21:49,713 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:21:49,713 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:49,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:21:49,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:49,714 INFO L87 Difference]: Start difference. First operand 1461 states and 1916 transitions. Second operand 3 states. [2019-10-15 02:21:51,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:51,141 INFO L93 Difference]: Finished difference Result 3675 states and 4813 transitions. [2019-10-15 02:21:51,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:21:51,141 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-10-15 02:21:51,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:51,155 INFO L225 Difference]: With dead ends: 3675 [2019-10-15 02:21:51,156 INFO L226 Difference]: Without dead ends: 2242 [2019-10-15 02:21:51,163 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:21:51,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2019-10-15 02:21:51,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2221. [2019-10-15 02:21:51,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2019-10-15 02:21:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2880 transitions. [2019-10-15 02:21:51,268 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2880 transitions. Word has length 157 [2019-10-15 02:21:51,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:51,269 INFO L462 AbstractCegarLoop]: Abstraction has 2221 states and 2880 transitions. [2019-10-15 02:21:51,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:21:51,269 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2880 transitions. [2019-10-15 02:21:51,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 02:21:51,274 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:51,274 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:21:51,275 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:51,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1288270035, now seen corresponding path program 1 times [2019-10-15 02:21:51,275 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:51,275 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723968312] [2019-10-15 02:21:51,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,276 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,276 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:51,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:51,551 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-10-15 02:21:51,552 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723968312] [2019-10-15 02:21:51,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:51,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-15 02:21:51,553 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585930964] [2019-10-15 02:21:51,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-15 02:21:51,555 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:51,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-15 02:21:51,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:21:51,556 INFO L87 Difference]: Start difference. First operand 2221 states and 2880 transitions. Second operand 5 states. [2019-10-15 02:21:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:51,663 INFO L93 Difference]: Finished difference Result 4468 states and 5849 transitions. [2019-10-15 02:21:51,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 02:21:51,663 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-10-15 02:21:51,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:51,691 INFO L225 Difference]: With dead ends: 4468 [2019-10-15 02:21:51,691 INFO L226 Difference]: Without dead ends: 2275 [2019-10-15 02:21:51,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:21:51,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2019-10-15 02:21:51,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2261. [2019-10-15 02:21:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2019-10-15 02:21:51,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2930 transitions. [2019-10-15 02:21:51,817 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2930 transitions. Word has length 144 [2019-10-15 02:21:51,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:51,818 INFO L462 AbstractCegarLoop]: Abstraction has 2261 states and 2930 transitions. [2019-10-15 02:21:51,818 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-15 02:21:51,818 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2930 transitions. [2019-10-15 02:21:51,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 02:21:51,823 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:51,824 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:21:51,824 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:51,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:51,824 INFO L82 PathProgramCache]: Analyzing trace with hash 1056262520, now seen corresponding path program 1 times [2019-10-15 02:21:51,824 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:51,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519972576] [2019-10-15 02:21:51,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,827 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:51,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:51,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:52,061 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-15 02:21:52,065 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519972576] [2019-10-15 02:21:52,066 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:21:52,066 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 02:21:52,066 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805543866] [2019-10-15 02:21:52,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 02:21:52,067 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:21:52,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 02:21:52,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 02:21:52,067 INFO L87 Difference]: Start difference. First operand 2261 states and 2930 transitions. Second operand 4 states. [2019-10-15 02:21:52,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:21:52,172 INFO L93 Difference]: Finished difference Result 4502 states and 5840 transitions. [2019-10-15 02:21:52,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 02:21:52,173 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-10-15 02:21:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:21:52,190 INFO L225 Difference]: With dead ends: 4502 [2019-10-15 02:21:52,190 INFO L226 Difference]: Without dead ends: 2262 [2019-10-15 02:21:52,197 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 02:21:52,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2019-10-15 02:21:52,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2262. [2019-10-15 02:21:52,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-10-15 02:21:52,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2931 transitions. [2019-10-15 02:21:52,290 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2931 transitions. Word has length 148 [2019-10-15 02:21:52,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:21:52,291 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 2931 transitions. [2019-10-15 02:21:52,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 02:21:52,291 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2931 transitions. [2019-10-15 02:21:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-15 02:21:52,297 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:21:52,297 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:21:52,297 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:21:52,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:21:52,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1615211683, now seen corresponding path program 1 times [2019-10-15 02:21:52,298 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:21:52,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100624438] [2019-10-15 02:21:52,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:52,299 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:21:52,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:21:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:52,528 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 02:21:52,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100624438] [2019-10-15 02:21:52,529 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603829768] [2019-10-15 02:21:52,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:21:53,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:21:53,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 02:21:53,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:21:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 02:21:53,227 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:21:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-15 02:21:53,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1562142219] [2019-10-15 02:21:53,631 INFO L162 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-10-15 02:21:53,631 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 02:21:53,638 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 02:21:53,647 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 02:21:53,647 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs