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-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 20:45:11,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 20:45:11,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 20:45:11,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 20:45:11,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 20:45:11,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 20:45:11,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 20:45:11,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 20:45:11,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 20:45:11,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 20:45:11,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 20:45:11,975 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 20:45:11,975 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 20:45:11,976 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 20:45:11,977 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 20:45:11,978 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 20:45:11,979 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 20:45:11,979 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 20:45:11,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 20:45:11,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 20:45:11,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 20:45:11,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 20:45:11,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 20:45:11,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 20:45:11,989 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 20:45:11,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 20:45:11,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 20:45:11,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 20:45:11,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 20:45:11,992 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 20:45:11,992 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 20:45:11,993 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 20:45:11,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 20:45:11,994 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 20:45:11,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 20:45:11,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 20:45:11,996 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 20:45:11,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 20:45:11,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 20:45:11,997 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 20:45:11,998 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 20:45:11,999 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 [2019-09-08 20:45:12,014 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 20:45:12,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 20:45:12,016 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 20:45:12,016 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 20:45:12,016 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 20:45:12,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 20:45:12,017 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 20:45:12,017 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 20:45:12,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 20:45:12,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 20:45:12,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 20:45:12,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 20:45:12,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 20:45:12,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 20:45:12,020 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 20:45:12,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 20:45:12,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 20:45:12,021 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 20:45:12,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 20:45:12,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 20:45:12,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 20:45:12,021 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 20:45:12,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 20:45:12,022 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 20:45:12,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 20:45:12,095 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 20:45:12,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 20:45:12,103 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 20:45:12,103 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 20:45:12,104 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2019-09-08 20:45:12,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d2d114f/54e2cb7ea4f64b17a2d39acb20625f3f/FLAGea4c743c5 [2019-09-08 20:45:12,930 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 20:45:12,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2019-09-08 20:45:12,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d2d114f/54e2cb7ea4f64b17a2d39acb20625f3f/FLAGea4c743c5 [2019-09-08 20:45:13,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64d2d114f/54e2cb7ea4f64b17a2d39acb20625f3f [2019-09-08 20:45:13,028 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 20:45:13,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 20:45:13,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 20:45:13,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 20:45:13,034 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 20:45:13,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:45:13" (1/1) ... [2019-09-08 20:45:13,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c5502d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:13, skipping insertion in model container [2019-09-08 20:45:13,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 08:45:13" (1/1) ... [2019-09-08 20:45:13,046 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 20:45:13,204 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 20:45:14,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 20:45:14,890 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 20:45:15,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 20:45:15,333 INFO L192 MainTranslator]: Completed translation [2019-09-08 20:45:15,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15 WrapperNode [2019-09-08 20:45:15,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 20:45:15,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 20:45:15,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 20:45:15,335 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 20:45:15,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (1/1) ... [2019-09-08 20:45:15,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 20:45:15,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 20:45:15,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 20:45:15,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 20:45:15,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (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 [2019-09-08 20:45:15,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 20:45:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 20:45:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-09-08 20:45:15,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2019-09-08 20:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-09-08 20:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-09-08 20:45:15,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-09-08 20:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-09-08 20:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-09-08 20:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-09-08 20:45:15,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-09-08 20:45:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-09-08 20:45:15,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-09-08 20:45:15,870 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-09-08 20:45:15,871 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-09-08 20:45:15,871 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-09-08 20:45:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2019-09-08 20:45:15,874 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_splice [2019-09-08 20:45:15,875 INFO L138 BoogieDeclarations]: Found implementation of procedure list_splice_init [2019-09-08 20:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-09-08 20:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_and_test [2019-09-08 20:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2019-09-08 20:45:15,876 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-09-08 20:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock_5 [2019-09-08 20:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock_9 [2019-09-08 20:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2019-09-08 20:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_init [2019-09-08 20:45:15,877 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_get [2019-09-08 20:45:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2019-09-08 20:45:15,878 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2019-09-08 20:45:15,879 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_tpgs [2019-09-08 20:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_data [2019-09-08 20:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_rdac_req [2019-09-08 20:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_failover_get [2019-09-08 20:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure release_controller [2019-09-08 20:45:15,880 INFO L138 BoogieDeclarations]: Found implementation of procedure get_controller [2019-09-08 20:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure submit_inquiry [2019-09-08 20:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lun_info [2019-09-08 20:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure check_ownership [2019-09-08 20:45:15,881 INFO L138 BoogieDeclarations]: Found implementation of procedure initialize_controller [2019-09-08 20:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_select [2019-09-08 20:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure mode_select_handle_sense [2019-09-08 20:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure send_mode_select [2019-09-08 20:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_mode_select [2019-09-08 20:45:15,882 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_activate [2019-09-08 20:45:15,883 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_prep_fn [2019-09-08 20:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_check_sense [2019-09-08 20:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_match [2019-09-08 20:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_attach [2019-09-08 20:45:15,884 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_bus_detach [2019-09-08 20:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_init [2019-09-08 20:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure rdac_exit [2019-09-08 20:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2019-09-08 20:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure invoke_work_1 [2019-09-08 20:45:15,885 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2019-09-08 20:45:15,887 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2019-09-08 20:45:15,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_scsi_device_handler_2 [2019-09-08 20:45:15,887 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2019-09-08 20:45:15,887 INFO L138 BoogieDeclarations]: Found implementation of procedure work_init_1 [2019-09-08 20:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 20:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-09-08 20:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-09-08 20:45:15,888 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-09-08 20:45:15,889 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-09-08 20:45:15,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_15 [2019-09-08 20:45:15,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_16 [2019-09-08 20:45:15,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_17 [2019-09-08 20:45:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_18 [2019-09-08 20:45:15,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_19 [2019-09-08 20:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-09-08 20:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kmem_cache_alloc_25 [2019-09-08 20:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_29 [2019-09-08 20:45:15,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_scsi_register_device_handler_30 [2019-09-08 20:45:15,892 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_scsi_unregister_device_handler_31 [2019-09-08 20:45:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_workqueue_32 [2019-09-08 20:45:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_scsi_unregister_device_handler_33 [2019-09-08 20:45:15,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-09-08 20:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-09-08 20:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-09-08 20:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-09-08 20:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-09-08 20:45:15,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2019-09-08 20:45:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags_and_return_some_page [2019-09-08 20:45:15,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2019-09-08 20:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2019-09-08 20:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2019-09-08 20:45:15,896 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_trylock [2019-09-08 20:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __alloc_workqueue_key [2019-09-08 20:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2019-09-08 20:45:15,897 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_execute_rq [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_get_request [2019-09-08 20:45:15,899 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_put_request [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_map_kern [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_set_block_pc [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_some_page [2019-09-08 20:45:15,900 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_normalize_sense [2019-09-08 20:45:15,901 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_register_device_handler [2019-09-08 20:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_unregister_device_handler [2019-09-08 20:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure sdev_prefix_printk [2019-09-08 20:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-09-08 20:45:15,902 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-09-08 20:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-09-08 20:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-09-08 20:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-09-08 20:45:15,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-09-08 20:45:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-08 20:45:15,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 20:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-09-08 20:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-09-08 20:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-09-08 20:45:15,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-09-08 20:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2019-09-08 20:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2019-09-08 20:45:15,909 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 20:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 20:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-09-08 20:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 20:45:15,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-09-08 20:45:15,911 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-09-08 20:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 20:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-09-08 20:45:15,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 20:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-09-08 20:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-09-08 20:45:15,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-09-08 20:45:15,915 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-09-08 20:45:15,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-09-08 20:45:15,920 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-09-08 20:45:15,921 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-09-08 20:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-09-08 20:45:15,922 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-09-08 20:45:15,930 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-09-08 20:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 20:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-09-08 20:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-09-08 20:45:15,931 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 20:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-09-08 20:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-09-08 20:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2019-09-08 20:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure __list_splice [2019-09-08 20:45:15,932 INFO L130 BoogieDeclarations]: Found specification of procedure list_splice_init [2019-09-08 20:45:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-09-08 20:45:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-09-08 20:45:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2019-09-08 20:45:15,933 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-09-08 20:45:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2019-09-08 20:45:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-09-08 20:45:15,934 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-09-08 20:45:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2019-09-08 20:45:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-09-08 20:45:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 20:45:15,935 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_and_test [2019-09-08 20:45:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2019-09-08 20:45:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-09-08 20:45:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-09-08 20:45:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-09-08 20:45:15,936 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock_5 [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock_9 [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure __alloc_workqueue_key [2019-09-08 20:45:15,937 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_workqueue_32 [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_15 [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_17 [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_16 [2019-09-08 20:45:15,938 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_19 [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_18 [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_29 [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure kref_init [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure kref_get [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-09-08 20:45:15,939 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kmem_cache_alloc_25 [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure invoke_work_1 [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2019-09-08 20:45:15,940 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_scsi_device_handler_2 [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure work_init_1 [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_normalize_sense [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure blk_put_request [2019-09-08 20:45:15,941 INFO L130 BoogieDeclarations]: Found specification of procedure blk_get_request [2019-09-08 20:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_set_block_pc [2019-09-08 20:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_map_kern [2019-09-08 20:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure blk_execute_rq [2019-09-08 20:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure sdev_prefix_printk [2019-09-08 20:45:15,942 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_register_device_handler [2019-09-08 20:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_scsi_register_device_handler_30 [2019-09-08 20:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_unregister_device_handler [2019-09-08 20:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_scsi_unregister_device_handler_31 [2019-09-08 20:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_scsi_unregister_device_handler_33 [2019-09-08 20:45:15,943 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_tpgs [2019-09-08 20:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 20:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure send_mode_select [2019-09-08 20:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_data [2019-09-08 20:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure get_rdac_req [2019-09-08 20:45:15,944 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_failover_get [2019-09-08 20:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure release_controller [2019-09-08 20:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure get_controller [2019-09-08 20:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-09-08 20:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 20:45:15,945 INFO L130 BoogieDeclarations]: Found specification of procedure submit_inquiry [2019-09-08 20:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure get_lun_info [2019-09-08 20:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure check_ownership [2019-09-08 20:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure initialize_controller [2019-09-08 20:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_select [2019-09-08 20:45:15,946 INFO L130 BoogieDeclarations]: Found specification of procedure mode_select_handle_sense [2019-09-08 20:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2019-09-08 20:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure queue_mode_select [2019-09-08 20:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_activate [2019-09-08 20:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_prep_fn [2019-09-08 20:45:15,947 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_check_sense [2019-09-08 20:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_match [2019-09-08 20:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_attach [2019-09-08 20:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_bus_detach [2019-09-08 20:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_init [2019-09-08 20:45:15,948 INFO L130 BoogieDeclarations]: Found specification of procedure rdac_exit [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-09-08 20:45:15,949 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-09-08 20:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_some_page [2019-09-08 20:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags_and_return_some_page [2019-09-08 20:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2019-09-08 20:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_trylock [2019-09-08 20:45:15,950 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-09-08 20:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 20:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 20:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 20:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-08 20:45:15,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-08 20:45:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 20:45:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-09-08 20:45:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-09-08 20:45:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-09-08 20:45:15,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-09-08 20:45:17,139 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-09-08 20:57:28,443 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 20:57:28,443 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 20:57:28,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:57:28 BoogieIcfgContainer [2019-09-08 20:57:28,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 20:57:28,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 20:57:28,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 20:57:28,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 20:57:28,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 08:45:13" (1/3) ... [2019-09-08 20:57:28,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701d0702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:57:28, skipping insertion in model container [2019-09-08 20:57:28,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 08:45:15" (2/3) ... [2019-09-08 20:57:28,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@701d0702 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 08:57:28, skipping insertion in model container [2019-09-08 20:57:28,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 08:57:28" (3/3) ... [2019-09-08 20:57:28,454 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--device_handler--scsi_dh_rdac.ko-entry_point.cil.out.i [2019-09-08 20:57:28,464 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 20:57:28,474 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 20:57:28,491 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 20:57:28,529 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 20:57:28,530 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 20:57:28,530 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 20:57:28,530 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 20:57:28,530 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 20:57:28,530 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 20:57:28,531 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 20:57:28,531 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 20:57:28,531 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 20:57:28,576 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states. [2019-09-08 20:57:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-09-08 20:57:28,588 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:28,589 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:28,592 INFO L418 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:28,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:28,598 INFO L82 PathProgramCache]: Analyzing trace with hash 2041841539, now seen corresponding path program 1 times [2019-09-08 20:57:28,600 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:28,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:28,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:28,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:28,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:29,426 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-09-08 20:57:29,430 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:29,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 20:57:29,436 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 20:57:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 20:57:29,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 20:57:29,454 INFO L87 Difference]: Start difference. First operand 825 states. Second operand 3 states. [2019-09-08 20:57:29,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:29,978 INFO L93 Difference]: Finished difference Result 1866 states and 2433 transitions. [2019-09-08 20:57:29,979 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 20:57:29,980 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2019-09-08 20:57:29,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:30,023 INFO L225 Difference]: With dead ends: 1866 [2019-09-08 20:57:30,024 INFO L226 Difference]: Without dead ends: 1022 [2019-09-08 20:57:30,034 INFO L628 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 [2019-09-08 20:57:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1022 states. [2019-09-08 20:57:30,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1022 to 1015. [2019-09-08 20:57:30,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2019-09-08 20:57:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1307 transitions. [2019-09-08 20:57:30,184 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1307 transitions. Word has length 73 [2019-09-08 20:57:30,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:30,185 INFO L475 AbstractCegarLoop]: Abstraction has 1015 states and 1307 transitions. [2019-09-08 20:57:30,185 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 20:57:30,185 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1307 transitions. [2019-09-08 20:57:30,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-08 20:57:30,193 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:30,194 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:30,194 INFO L418 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:30,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:30,194 INFO L82 PathProgramCache]: Analyzing trace with hash -475120060, now seen corresponding path program 1 times [2019-09-08 20:57:30,195 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:30,195 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:30,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:30,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:30,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:30,468 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-08 20:57:30,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:30,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 20:57:30,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 20:57:30,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 20:57:30,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 20:57:30,472 INFO L87 Difference]: Start difference. First operand 1015 states and 1307 transitions. Second operand 6 states. [2019-09-08 20:57:30,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:30,600 INFO L93 Difference]: Finished difference Result 2006 states and 2590 transitions. [2019-09-08 20:57:30,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 20:57:30,601 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2019-09-08 20:57:30,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:30,611 INFO L225 Difference]: With dead ends: 2006 [2019-09-08 20:57:30,611 INFO L226 Difference]: Without dead ends: 1026 [2019-09-08 20:57:30,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:30,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2019-09-08 20:57:30,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2019-09-08 20:57:30,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2019-09-08 20:57:30,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1318 transitions. [2019-09-08 20:57:30,683 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1318 transitions. Word has length 115 [2019-09-08 20:57:30,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:30,685 INFO L475 AbstractCegarLoop]: Abstraction has 1026 states and 1318 transitions. [2019-09-08 20:57:30,686 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 20:57:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1318 transitions. [2019-09-08 20:57:30,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 20:57:30,697 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:30,697 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:30,698 INFO L418 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:30,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:30,699 INFO L82 PathProgramCache]: Analyzing trace with hash -413843714, now seen corresponding path program 1 times [2019-09-08 20:57:30,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:30,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:30,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:30,711 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:30,711 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-08 20:57:31,100 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:31,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 20:57:31,102 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 20:57:31,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 20:57:31,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 20:57:31,103 INFO L87 Difference]: Start difference. First operand 1026 states and 1318 transitions. Second operand 9 states. [2019-09-08 20:57:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:31,510 INFO L93 Difference]: Finished difference Result 2023 states and 2606 transitions. [2019-09-08 20:57:31,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 20:57:31,510 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2019-09-08 20:57:31,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:31,520 INFO L225 Difference]: With dead ends: 2023 [2019-09-08 20:57:31,520 INFO L226 Difference]: Without dead ends: 1032 [2019-09-08 20:57:31,527 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2019-09-08 20:57:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2019-09-08 20:57:31,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1030. [2019-09-08 20:57:31,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1030 states. [2019-09-08 20:57:31,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1322 transitions. [2019-09-08 20:57:31,590 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1322 transitions. Word has length 116 [2019-09-08 20:57:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:31,592 INFO L475 AbstractCegarLoop]: Abstraction has 1030 states and 1322 transitions. [2019-09-08 20:57:31,592 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 20:57:31,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1322 transitions. [2019-09-08 20:57:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2019-09-08 20:57:31,604 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:31,605 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:31,605 INFO L418 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:31,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:31,605 INFO L82 PathProgramCache]: Analyzing trace with hash 403804736, now seen corresponding path program 1 times [2019-09-08 20:57:31,605 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:31,606 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:31,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:31,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-09-08 20:57:31,913 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:31,913 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 20:57:31,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 20:57:31,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 20:57:31,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 20:57:31,915 INFO L87 Difference]: Start difference. First operand 1030 states and 1322 transitions. Second operand 3 states. [2019-09-08 20:57:31,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:31,972 INFO L93 Difference]: Finished difference Result 1122 states and 1442 transitions. [2019-09-08 20:57:31,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 20:57:31,973 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 116 [2019-09-08 20:57:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:31,984 INFO L225 Difference]: With dead ends: 1122 [2019-09-08 20:57:31,985 INFO L226 Difference]: Without dead ends: 1119 [2019-09-08 20:57:31,986 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 20:57:31,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-09-08 20:57:32,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1098. [2019-09-08 20:57:32,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2019-09-08 20:57:32,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1411 transitions. [2019-09-08 20:57:32,047 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1411 transitions. Word has length 116 [2019-09-08 20:57:32,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:32,047 INFO L475 AbstractCegarLoop]: Abstraction has 1098 states and 1411 transitions. [2019-09-08 20:57:32,047 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 20:57:32,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1411 transitions. [2019-09-08 20:57:32,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-09-08 20:57:32,056 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:32,057 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:32,057 INFO L418 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:32,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:32,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1793987834, now seen corresponding path program 1 times [2019-09-08 20:57:32,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:32,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:32,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:32,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:32,061 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:32,436 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2019-09-08 20:57:32,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:32,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 20:57:32,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 20:57:32,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 20:57:32,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 20:57:32,439 INFO L87 Difference]: Start difference. First operand 1098 states and 1411 transitions. Second operand 6 states. [2019-09-08 20:57:35,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:35,045 INFO L93 Difference]: Finished difference Result 2170 states and 2795 transitions. [2019-09-08 20:57:35,045 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 20:57:35,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 229 [2019-09-08 20:57:35,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:35,053 INFO L225 Difference]: With dead ends: 2170 [2019-09-08 20:57:35,054 INFO L226 Difference]: Without dead ends: 1107 [2019-09-08 20:57:35,059 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:35,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1107 states. [2019-09-08 20:57:35,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1107 to 1103. [2019-09-08 20:57:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1103 states. [2019-09-08 20:57:35,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1103 states to 1103 states and 1416 transitions. [2019-09-08 20:57:35,112 INFO L78 Accepts]: Start accepts. Automaton has 1103 states and 1416 transitions. Word has length 229 [2019-09-08 20:57:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:35,113 INFO L475 AbstractCegarLoop]: Abstraction has 1103 states and 1416 transitions. [2019-09-08 20:57:35,113 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 20:57:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1103 states and 1416 transitions. [2019-09-08 20:57:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-09-08 20:57:35,122 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:35,122 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:35,123 INFO L418 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:35,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:35,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1564225368, now seen corresponding path program 1 times [2019-09-08 20:57:35,123 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:35,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:35,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:35,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:35,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:35,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-08 20:57:35,716 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:57:35,716 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:57:35,745 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:37,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 5185 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 20:57:37,172 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:57:37,261 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2019-09-08 20:57:37,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 20:57:37,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-08 20:57:37,286 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 20:57:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 20:57:37,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:37,287 INFO L87 Difference]: Start difference. First operand 1103 states and 1416 transitions. Second operand 7 states. [2019-09-08 20:57:39,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:39,914 INFO L93 Difference]: Finished difference Result 2180 states and 2811 transitions. [2019-09-08 20:57:39,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 20:57:39,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2019-09-08 20:57:39,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:39,922 INFO L225 Difference]: With dead ends: 2180 [2019-09-08 20:57:39,922 INFO L226 Difference]: Without dead ends: 1112 [2019-09-08 20:57:39,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 20:57:39,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2019-09-08 20:57:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1109. [2019-09-08 20:57:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2019-09-08 20:57:39,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1425 transitions. [2019-09-08 20:57:39,983 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1425 transitions. Word has length 250 [2019-09-08 20:57:39,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:39,984 INFO L475 AbstractCegarLoop]: Abstraction has 1109 states and 1425 transitions. [2019-09-08 20:57:39,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 20:57:39,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1425 transitions. [2019-09-08 20:57:39,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-09-08 20:57:39,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:39,996 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:39,996 INFO L418 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:39,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:39,997 INFO L82 PathProgramCache]: Analyzing trace with hash 670567474, now seen corresponding path program 1 times [2019-09-08 20:57:39,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:39,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:40,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:40,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:40,004 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:40,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2019-09-08 20:57:40,623 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:57:40,623 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 20:57:40,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:57:42,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:42,164 INFO L256 TraceCheckSpWp]: Trace formula consists of 5289 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-08 20:57:42,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:57:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-09-08 20:57:42,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 20:57:42,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-08 20:57:42,336 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 20:57:42,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 20:57:42,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:42,337 INFO L87 Difference]: Start difference. First operand 1109 states and 1425 transitions. Second operand 7 states. [2019-09-08 20:57:45,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:45,072 INFO L93 Difference]: Finished difference Result 2194 states and 2832 transitions. [2019-09-08 20:57:45,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 20:57:45,073 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2019-09-08 20:57:45,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:45,081 INFO L225 Difference]: With dead ends: 2194 [2019-09-08 20:57:45,082 INFO L226 Difference]: Without dead ends: 1120 [2019-09-08 20:57:45,089 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 20:57:45,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-09-08 20:57:45,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 1111. [2019-09-08 20:57:45,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1111 states. [2019-09-08 20:57:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1428 transitions. [2019-09-08 20:57:45,167 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1428 transitions. Word has length 266 [2019-09-08 20:57:45,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:45,169 INFO L475 AbstractCegarLoop]: Abstraction has 1111 states and 1428 transitions. [2019-09-08 20:57:45,169 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 20:57:45,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1428 transitions. [2019-09-08 20:57:45,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-09-08 20:57:45,178 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:45,179 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:45,179 INFO L418 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:45,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:45,180 INFO L82 PathProgramCache]: Analyzing trace with hash -86233264, now seen corresponding path program 1 times [2019-09-08 20:57:45,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:45,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:45,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:45,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:45,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:45,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-08 20:57:45,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:45,795 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 20:57:45,797 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 20:57:45,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 20:57:45,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 20:57:45,798 INFO L87 Difference]: Start difference. First operand 1111 states and 1428 transitions. Second operand 4 states. [2019-09-08 20:57:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:45,907 INFO L93 Difference]: Finished difference Result 2190 states and 2825 transitions. [2019-09-08 20:57:45,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 20:57:45,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2019-09-08 20:57:45,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:45,921 INFO L225 Difference]: With dead ends: 2190 [2019-09-08 20:57:45,922 INFO L226 Difference]: Without dead ends: 1114 [2019-09-08 20:57:45,929 INFO L628 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 [2019-09-08 20:57:45,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2019-09-08 20:57:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1113. [2019-09-08 20:57:45,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2019-09-08 20:57:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1430 transitions. [2019-09-08 20:57:45,991 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1430 transitions. Word has length 268 [2019-09-08 20:57:45,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:45,992 INFO L475 AbstractCegarLoop]: Abstraction has 1113 states and 1430 transitions. [2019-09-08 20:57:45,993 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 20:57:45,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1430 transitions. [2019-09-08 20:57:46,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-09-08 20:57:46,010 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:46,011 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:46,011 INFO L418 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:46,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:46,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1080926962, now seen corresponding path program 1 times [2019-09-08 20:57:46,012 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:46,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:46,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:46,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:46,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2019-09-08 20:57:46,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:46,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 20:57:46,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 20:57:46,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 20:57:46,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 20:57:46,645 INFO L87 Difference]: Start difference. First operand 1113 states and 1430 transitions. Second operand 4 states. [2019-09-08 20:57:46,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:46,731 INFO L93 Difference]: Finished difference Result 2197 states and 2832 transitions. [2019-09-08 20:57:46,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 20:57:46,732 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 268 [2019-09-08 20:57:46,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:46,742 INFO L225 Difference]: With dead ends: 2197 [2019-09-08 20:57:46,743 INFO L226 Difference]: Without dead ends: 1119 [2019-09-08 20:57:46,750 INFO L628 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 [2019-09-08 20:57:46,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2019-09-08 20:57:46,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1115. [2019-09-08 20:57:46,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1115 states. [2019-09-08 20:57:46,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1432 transitions. [2019-09-08 20:57:46,811 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1432 transitions. Word has length 268 [2019-09-08 20:57:46,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:46,811 INFO L475 AbstractCegarLoop]: Abstraction has 1115 states and 1432 transitions. [2019-09-08 20:57:46,812 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 20:57:46,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1432 transitions. [2019-09-08 20:57:46,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2019-09-08 20:57:46,825 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:46,825 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:46,826 INFO L418 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:46,826 INFO L82 PathProgramCache]: Analyzing trace with hash 796136268, now seen corresponding path program 1 times [2019-09-08 20:57:46,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:46,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:46,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:46,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:46,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:47,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:48,121 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-09-08 20:57:48,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:48,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 20:57:48,123 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 20:57:48,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 20:57:48,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 20:57:48,124 INFO L87 Difference]: Start difference. First operand 1115 states and 1432 transitions. Second operand 6 states. [2019-09-08 20:57:50,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:50,770 INFO L93 Difference]: Finished difference Result 2204 states and 2842 transitions. [2019-09-08 20:57:50,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 20:57:50,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 268 [2019-09-08 20:57:50,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:50,778 INFO L225 Difference]: With dead ends: 2204 [2019-09-08 20:57:50,778 INFO L226 Difference]: Without dead ends: 1124 [2019-09-08 20:57:50,784 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2019-09-08 20:57:50,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1120. [2019-09-08 20:57:50,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1120 states. [2019-09-08 20:57:50,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1440 transitions. [2019-09-08 20:57:50,837 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1440 transitions. Word has length 268 [2019-09-08 20:57:50,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:50,838 INFO L475 AbstractCegarLoop]: Abstraction has 1120 states and 1440 transitions. [2019-09-08 20:57:50,839 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 20:57:50,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1440 transitions. [2019-09-08 20:57:50,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-09-08 20:57:50,850 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:50,850 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:50,850 INFO L418 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:50,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:50,851 INFO L82 PathProgramCache]: Analyzing trace with hash -149251816, now seen corresponding path program 1 times [2019-09-08 20:57:50,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:50,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:50,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:50,854 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:50,854 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:51,872 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-09-08 20:57:51,872 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:51,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 20:57:51,873 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 20:57:51,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 20:57:51,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 20:57:51,874 INFO L87 Difference]: Start difference. First operand 1120 states and 1440 transitions. Second operand 6 states. [2019-09-08 20:57:54,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:54,651 INFO L93 Difference]: Finished difference Result 2210 states and 2850 transitions. [2019-09-08 20:57:54,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 20:57:54,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2019-09-08 20:57:54,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:54,659 INFO L225 Difference]: With dead ends: 2210 [2019-09-08 20:57:54,660 INFO L226 Difference]: Without dead ends: 1125 [2019-09-08 20:57:54,669 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:54,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2019-09-08 20:57:54,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1117. [2019-09-08 20:57:54,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1117 states. [2019-09-08 20:57:54,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1434 transitions. [2019-09-08 20:57:54,730 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1434 transitions. Word has length 284 [2019-09-08 20:57:54,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:54,730 INFO L475 AbstractCegarLoop]: Abstraction has 1117 states and 1434 transitions. [2019-09-08 20:57:54,731 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 20:57:54,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1434 transitions. [2019-09-08 20:57:54,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-09-08 20:57:54,740 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:54,741 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:54,741 INFO L418 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:54,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:54,741 INFO L82 PathProgramCache]: Analyzing trace with hash 510279706, now seen corresponding path program 1 times [2019-09-08 20:57:54,742 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:54,742 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:54,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:54,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:54,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2019-09-08 20:57:55,727 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:57:55,728 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:57:55,772 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:56,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 5396 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-08 20:57:56,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:57:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2019-09-08 20:57:57,109 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 20:57:57,109 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2019-09-08 20:57:57,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 20:57:57,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 20:57:57,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-08 20:57:57,111 INFO L87 Difference]: Start difference. First operand 1117 states and 1434 transitions. Second operand 7 states. [2019-09-08 20:57:57,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:57,388 INFO L93 Difference]: Finished difference Result 2214 states and 2914 transitions. [2019-09-08 20:57:57,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 20:57:57,389 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2019-09-08 20:57:57,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:57,398 INFO L225 Difference]: With dead ends: 2214 [2019-09-08 20:57:57,399 INFO L226 Difference]: Without dead ends: 1132 [2019-09-08 20:57:57,405 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 283 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-08 20:57:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1132 states. [2019-09-08 20:57:57,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1132 to 1127. [2019-09-08 20:57:57,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1127 states. [2019-09-08 20:57:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1450 transitions. [2019-09-08 20:57:57,459 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1450 transitions. Word has length 284 [2019-09-08 20:57:57,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:57,459 INFO L475 AbstractCegarLoop]: Abstraction has 1127 states and 1450 transitions. [2019-09-08 20:57:57,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 20:57:57,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1450 transitions. [2019-09-08 20:57:57,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2019-09-08 20:57:57,470 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:57,470 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:57,471 INFO L418 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:57,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:57,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1689437381, now seen corresponding path program 1 times [2019-09-08 20:57:57,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:57,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:57,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:57,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:57,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:57,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:57:58,380 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-08 20:57:58,380 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 20:57:58,381 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 20:57:58,382 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 20:57:58,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 20:57:58,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 20:57:58,383 INFO L87 Difference]: Start difference. First operand 1127 states and 1450 transitions. Second operand 6 states. [2019-09-08 20:57:59,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:57:59,532 INFO L93 Difference]: Finished difference Result 2259 states and 2919 transitions. [2019-09-08 20:57:59,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 20:57:59,533 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 299 [2019-09-08 20:57:59,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:57:59,541 INFO L225 Difference]: With dead ends: 2259 [2019-09-08 20:57:59,541 INFO L226 Difference]: Without dead ends: 1167 [2019-09-08 20:57:59,546 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 20:57:59,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1167 states. [2019-09-08 20:57:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1167 to 1164. [2019-09-08 20:57:59,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1164 states. [2019-09-08 20:57:59,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1500 transitions. [2019-09-08 20:57:59,597 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1500 transitions. Word has length 299 [2019-09-08 20:57:59,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:57:59,598 INFO L475 AbstractCegarLoop]: Abstraction has 1164 states and 1500 transitions. [2019-09-08 20:57:59,598 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 20:57:59,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1500 transitions. [2019-09-08 20:57:59,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-09-08 20:57:59,607 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:57:59,609 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:57:59,609 INFO L418 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:57:59,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:57:59,609 INFO L82 PathProgramCache]: Analyzing trace with hash -750351593, now seen corresponding path program 1 times [2019-09-08 20:57:59,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:57:59,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:57:59,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:57:59,612 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:57:59,612 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:01,183 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-08 20:58:01,186 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:01,187 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:01,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:58:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:02,521 INFO L256 TraceCheckSpWp]: Trace formula consists of 5504 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 20:58:02,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:58:02,642 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 67 proven. 1 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-09-08 20:58:02,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:58:02,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-08 20:58:02,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 20:58:02,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 20:58:02,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-09-08 20:58:02,667 INFO L87 Difference]: Start difference. First operand 1164 states and 1500 transitions. Second operand 9 states. [2019-09-08 20:58:03,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:58:03,300 INFO L93 Difference]: Finished difference Result 2320 states and 3064 transitions. [2019-09-08 20:58:03,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 20:58:03,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 305 [2019-09-08 20:58:03,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:58:03,311 INFO L225 Difference]: With dead ends: 2320 [2019-09-08 20:58:03,311 INFO L226 Difference]: Without dead ends: 1176 [2019-09-08 20:58:03,319 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-09-08 20:58:03,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2019-09-08 20:58:03,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1169. [2019-09-08 20:58:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1169 states. [2019-09-08 20:58:03,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1169 states to 1169 states and 1506 transitions. [2019-09-08 20:58:03,369 INFO L78 Accepts]: Start accepts. Automaton has 1169 states and 1506 transitions. Word has length 305 [2019-09-08 20:58:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:58:03,370 INFO L475 AbstractCegarLoop]: Abstraction has 1169 states and 1506 transitions. [2019-09-08 20:58:03,370 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 20:58:03,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1169 states and 1506 transitions. [2019-09-08 20:58:03,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2019-09-08 20:58:03,380 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:58:03,381 INFO L399 BasicCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:58:03,381 INFO L418 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:58:03,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:58:03,382 INFO L82 PathProgramCache]: Analyzing trace with hash 234529288, now seen corresponding path program 1 times [2019-09-08 20:58:03,382 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:58:03,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:58:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:03,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:58:03,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:04,295 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2019-09-08 20:58:04,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:04,296 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:04,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:58:05,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:05,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 5568 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 20:58:05,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:58:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 86 proven. 3 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-08 20:58:05,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:58:05,823 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6] total 8 [2019-09-08 20:58:05,824 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 20:58:05,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 20:58:05,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 20:58:05,825 INFO L87 Difference]: Start difference. First operand 1169 states and 1506 transitions. Second operand 8 states. [2019-09-08 20:58:06,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:58:06,032 INFO L93 Difference]: Finished difference Result 2316 states and 3055 transitions. [2019-09-08 20:58:06,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 20:58:06,033 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 314 [2019-09-08 20:58:06,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:58:06,043 INFO L225 Difference]: With dead ends: 2316 [2019-09-08 20:58:06,043 INFO L226 Difference]: Without dead ends: 1182 [2019-09-08 20:58:06,051 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2019-09-08 20:58:06,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2019-09-08 20:58:06,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1173. [2019-09-08 20:58:06,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2019-09-08 20:58:06,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1512 transitions. [2019-09-08 20:58:06,099 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1512 transitions. Word has length 314 [2019-09-08 20:58:06,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:58:06,100 INFO L475 AbstractCegarLoop]: Abstraction has 1173 states and 1512 transitions. [2019-09-08 20:58:06,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 20:58:06,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1512 transitions. [2019-09-08 20:58:06,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2019-09-08 20:58:06,109 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:58:06,110 INFO L399 BasicCegarLoop]: trace histogram [9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:58:06,110 INFO L418 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:58:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:58:06,111 INFO L82 PathProgramCache]: Analyzing trace with hash -334635665, now seen corresponding path program 2 times [2019-09-08 20:58:06,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:58:06,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:58:06,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:06,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 20:58:06,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:06,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:07,005 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2019-09-08 20:58:07,005 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:07,005 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 20:58:07,027 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:10,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-09-08 20:58:10,040 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 20:58:10,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 5592 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 20:58:10,113 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:58:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 103 proven. 6 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2019-09-08 20:58:10,261 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:58:10,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-09-08 20:58:10,263 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 20:58:10,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 20:58:10,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-08 20:58:10,263 INFO L87 Difference]: Start difference. First operand 1173 states and 1512 transitions. Second operand 10 states. [2019-09-08 20:58:10,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:58:10,516 INFO L93 Difference]: Finished difference Result 2328 states and 3074 transitions. [2019-09-08 20:58:10,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-08 20:58:10,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 319 [2019-09-08 20:58:10,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:58:10,524 INFO L225 Difference]: With dead ends: 2328 [2019-09-08 20:58:10,525 INFO L226 Difference]: Without dead ends: 1190 [2019-09-08 20:58:10,531 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2019-09-08 20:58:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-09-08 20:58:10,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1177. [2019-09-08 20:58:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2019-09-08 20:58:10,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1518 transitions. [2019-09-08 20:58:10,584 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1518 transitions. Word has length 319 [2019-09-08 20:58:10,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:58:10,584 INFO L475 AbstractCegarLoop]: Abstraction has 1177 states and 1518 transitions. [2019-09-08 20:58:10,585 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 20:58:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1518 transitions. [2019-09-08 20:58:10,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2019-09-08 20:58:10,592 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:58:10,593 INFO L399 BasicCegarLoop]: trace histogram [12, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:58:10,593 INFO L418 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:58:10,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:58:10,594 INFO L82 PathProgramCache]: Analyzing trace with hash -516222752, now seen corresponding path program 3 times [2019-09-08 20:58:10,594 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:58:10,594 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:58:10,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:10,599 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 20:58:10,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:11,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:11,581 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2019-09-08 20:58:11,582 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:11,582 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:11,613 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2019-09-08 20:58:40,217 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-09-08 20:58:40,217 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 20:58:40,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 5562 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-08 20:58:40,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:58:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 257 backedges. 79 proven. 10 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2019-09-08 20:58:40,575 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:58:40,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-08 20:58:40,576 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 20:58:40,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 20:58:40,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2019-09-08 20:58:40,577 INFO L87 Difference]: Start difference. First operand 1177 states and 1518 transitions. Second operand 12 states. [2019-09-08 20:58:40,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:58:40,827 INFO L93 Difference]: Finished difference Result 2340 states and 3093 transitions. [2019-09-08 20:58:40,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 20:58:40,827 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 324 [2019-09-08 20:58:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:58:40,835 INFO L225 Difference]: With dead ends: 2340 [2019-09-08 20:58:40,835 INFO L226 Difference]: Without dead ends: 1198 [2019-09-08 20:58:40,844 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2019-09-08 20:58:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2019-09-08 20:58:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 1181. [2019-09-08 20:58:40,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1181 states. [2019-09-08 20:58:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1524 transitions. [2019-09-08 20:58:40,886 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1524 transitions. Word has length 324 [2019-09-08 20:58:40,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:58:40,886 INFO L475 AbstractCegarLoop]: Abstraction has 1181 states and 1524 transitions. [2019-09-08 20:58:40,886 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 20:58:40,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1524 transitions. [2019-09-08 20:58:40,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-09-08 20:58:40,893 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:58:40,893 INFO L399 BasicCegarLoop]: trace histogram [15, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:58:40,893 INFO L418 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:58:40,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:58:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1559368327, now seen corresponding path program 4 times [2019-09-08 20:58:40,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:58:40,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:58:40,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:40,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 20:58:40,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:41,686 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2019-09-08 20:58:41,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:41,688 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 20:58:41,712 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:43,095 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-09-08 20:58:43,095 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 20:58:43,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 5640 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-08 20:58:43,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:58:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 102 proven. 15 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-09-08 20:58:43,306 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:58:43,306 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 14 [2019-09-08 20:58:43,307 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-09-08 20:58:43,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-09-08 20:58:43,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2019-09-08 20:58:43,307 INFO L87 Difference]: Start difference. First operand 1181 states and 1524 transitions. Second operand 14 states. [2019-09-08 20:58:43,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:58:43,574 INFO L93 Difference]: Finished difference Result 2352 states and 3112 transitions. [2019-09-08 20:58:43,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-08 20:58:43,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 329 [2019-09-08 20:58:43,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:58:43,581 INFO L225 Difference]: With dead ends: 2352 [2019-09-08 20:58:43,582 INFO L226 Difference]: Without dead ends: 1206 [2019-09-08 20:58:43,588 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 323 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=276, Unknown=0, NotChecked=0, Total=380 [2019-09-08 20:58:43,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2019-09-08 20:58:43,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 1185. [2019-09-08 20:58:43,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1185 states. [2019-09-08 20:58:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1530 transitions. [2019-09-08 20:58:43,630 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1530 transitions. Word has length 329 [2019-09-08 20:58:43,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:58:43,630 INFO L475 AbstractCegarLoop]: Abstraction has 1185 states and 1530 transitions. [2019-09-08 20:58:43,630 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-09-08 20:58:43,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1530 transitions. [2019-09-08 20:58:43,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2019-09-08 20:58:43,638 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:58:43,638 INFO L399 BasicCegarLoop]: trace histogram [18, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:58:43,639 INFO L418 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:58:43,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:58:43,639 INFO L82 PathProgramCache]: Analyzing trace with hash -325471304, now seen corresponding path program 5 times [2019-09-08 20:58:43,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:58:43,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:58:43,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:43,642 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 20:58:43,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:58:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:58:44,504 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-09-08 20:58:44,504 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:58:44,504 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 20:58:44,534 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2019-09-08 20:59:06,495 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2019-09-08 20:59:06,495 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-09-08 20:59:06,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-08 20:59:06,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 20:59:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 183 proven. 25 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-08 20:59:06,592 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 20:59:06,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2019-09-08 20:59:06,593 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 20:59:06,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 20:59:06,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-09-08 20:59:06,594 INFO L87 Difference]: Start difference. First operand 1185 states and 1530 transitions. Second operand 9 states. [2019-09-08 20:59:06,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 20:59:06,870 INFO L93 Difference]: Finished difference Result 2338 states and 3027 transitions. [2019-09-08 20:59:06,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 20:59:06,871 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 334 [2019-09-08 20:59:06,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 20:59:06,877 INFO L225 Difference]: With dead ends: 2338 [2019-09-08 20:59:06,878 INFO L226 Difference]: Without dead ends: 1188 [2019-09-08 20:59:06,883 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 334 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-09-08 20:59:06,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2019-09-08 20:59:06,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1187. [2019-09-08 20:59:06,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1187 states. [2019-09-08 20:59:06,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1187 states to 1187 states and 1532 transitions. [2019-09-08 20:59:06,931 INFO L78 Accepts]: Start accepts. Automaton has 1187 states and 1532 transitions. Word has length 334 [2019-09-08 20:59:06,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 20:59:06,932 INFO L475 AbstractCegarLoop]: Abstraction has 1187 states and 1532 transitions. [2019-09-08 20:59:06,932 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 20:59:06,932 INFO L276 IsEmpty]: Start isEmpty. Operand 1187 states and 1532 transitions. [2019-09-08 20:59:06,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2019-09-08 20:59:06,940 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 20:59:06,941 INFO L399 BasicCegarLoop]: trace histogram [18, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 20:59:06,941 INFO L418 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 20:59:06,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 20:59:06,942 INFO L82 PathProgramCache]: Analyzing trace with hash 2030052244, now seen corresponding path program 6 times [2019-09-08 20:59:06,942 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 20:59:06,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 20:59:06,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:59:06,945 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-09-08 20:59:06,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 20:59:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 20:59:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 4 proven. 36 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2019-09-08 20:59:07,872 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 20:59:07,872 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 20:59:07,896 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000