java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:20:21,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:20:21,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:20:21,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:20:21,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:20:21,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:20:21,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:20:21,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:20:21,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:20:21,397 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:20:21,399 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:20:21,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:20:21,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:20:21,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:20:21,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:20:21,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:20:21,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:20:21,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:20:21,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:20:21,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:20:21,422 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:20:21,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:20:21,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:20:21,429 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:20:21,432 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:20:21,432 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:20:21,433 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:20:21,434 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:20:21,436 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:20:21,437 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:20:21,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:20:21,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:20:21,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:20:21,440 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:20:21,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:20:21,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:20:21,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:20:21,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:20:21,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:20:21,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:20:21,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:20:21,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:20:21,465 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:20:21,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:20:21,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:20:21,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:20:21,469 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:20:21,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:20:21,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:20:21,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:20:21,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:20:21,469 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:20:21,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:20:21,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:20:21,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:20:21,471 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:20:21,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:20:21,472 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:20:21,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:20:21,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:20:21,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:20:21,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:20:21,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:20:21,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:20:21,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:20:21,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:20:21,773 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:20:21,795 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:20:21,798 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:20:21,800 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:20:21,800 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:20:21,801 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2019-10-14 22:20:21,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f83798d/93e5ad8f5ceb454385d26de42d8ebe8f/FLAG13ec0ed74 [2019-10-14 22:20:22,707 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:20:22,707 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2019-10-14 22:20:22,747 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f83798d/93e5ad8f5ceb454385d26de42d8ebe8f/FLAG13ec0ed74 [2019-10-14 22:20:22,782 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56f83798d/93e5ad8f5ceb454385d26de42d8ebe8f [2019-10-14 22:20:22,792 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:20:22,793 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:20:22,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:20:22,795 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:20:22,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:20:22,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:20:22" (1/1) ... [2019-10-14 22:20:22,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9b8ec1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:22, skipping insertion in model container [2019-10-14 22:20:22,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:20:22" (1/1) ... [2019-10-14 22:20:22,809 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:20:22,937 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:20:24,279 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:20:24,306 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:20:24,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:20:24,700 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:20:24,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24 WrapperNode [2019-10-14 22:20:24,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:20:24,703 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:20:24,703 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:20:24,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:20:24,723 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,967 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... [2019-10-14 22:20:24,983 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:20:24,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:20:24,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:20:24,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:20:24,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:20:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:20:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:20:25,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-14 22:20:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-14 22:20:25,142 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2019-10-14 22:20:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-14 22:20:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-14 22:20:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-14 22:20:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 22:20:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 22:20:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 22:20:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 22:20:25,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 22:20:25,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 22:20:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 22:20:25,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-14 22:20:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-14 22:20:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2019-10-14 22:20:25,148 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2019-10-14 22:20:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2019-10-14 22:20:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2019-10-14 22:20:25,149 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2019-10-14 22:20:25,150 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:20:25,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-14 22:20:25,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-14 22:20:25,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-14 22:20:25,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-14 22:20:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2019-10-14 22:20:25,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2019-10-14 22:20:25,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2019-10-14 22:20:25,157 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2019-10-14 22:20:25,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2019-10-14 22:20:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2019-10-14 22:20:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2019-10-14 22:20:25,158 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-14 22:20:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:20:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:20:25,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 22:20:25,160 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 22:20:25,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:20:25,161 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-14 22:20:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2019-10-14 22:20:25,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:20:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2019-10-14 22:20:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-14 22:20:25,163 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-14 22:20:25,164 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-14 22:20:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:20:25,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:20:25,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 22:20:25,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-14 22:20:25,168 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2019-10-14 22:20:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2019-10-14 22:20:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2019-10-14 22:20:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2019-10-14 22:20:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2019-10-14 22:20:25,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2019-10-14 22:20:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2019-10-14 22:20:25,170 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2019-10-14 22:20:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2019-10-14 22:20:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 22:20:25,171 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2019-10-14 22:20:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2019-10-14 22:20:25,172 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2019-10-14 22:20:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2019-10-14 22:20:25,173 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2019-10-14 22:20:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2019-10-14 22:20:25,175 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2019-10-14 22:20:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2019-10-14 22:20:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2019-10-14 22:20:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2019-10-14 22:20:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:20:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:20:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2019-10-14 22:20:25,178 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2019-10-14 22:20:25,179 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2019-10-14 22:20:25,180 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2019-10-14 22:20:25,183 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2019-10-14 22:20:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:20:25,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2019-10-14 22:20:25,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:20:25,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-14 22:20:25,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-14 22:20:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:20:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:20:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:20:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:20:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:20:26,226 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 22:20:26,970 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2019-10-14 22:20:27,473 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:20:27,474 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 22:20:27,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:20:27 BoogieIcfgContainer [2019-10-14 22:20:27,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:20:27,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:20:27,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:20:27,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:20:27,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:20:22" (1/3) ... [2019-10-14 22:20:27,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192825ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:20:27, skipping insertion in model container [2019-10-14 22:20:27,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:20:24" (2/3) ... [2019-10-14 22:20:27,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192825ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:20:27, skipping insertion in model container [2019-10-14 22:20:27,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:20:27" (3/3) ... [2019-10-14 22:20:27,486 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2019-10-14 22:20:27,498 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:20:27,510 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:20:27,527 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:20:27,574 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:20:27,575 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:20:27,575 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:20:27,575 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:20:27,575 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:20:27,576 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:20:27,576 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:20:27,576 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:20:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states. [2019-10-14 22:20:27,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-14 22:20:27,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:27,630 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:27,633 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:27,639 INFO L82 PathProgramCache]: Analyzing trace with hash 29034927, now seen corresponding path program 1 times [2019-10-14 22:20:27,648 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:27,649 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464191028] [2019-10-14 22:20:27,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:27,649 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:27,649 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:27,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,554 WARN L191 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 22:20:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 22:20:28,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464191028] [2019-10-14 22:20:28,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:28,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:20:28,771 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358933681] [2019-10-14 22:20:28,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:20:28,776 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:28,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:20:28,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:20:28,793 INFO L87 Difference]: Start difference. First operand 464 states. Second operand 6 states. [2019-10-14 22:20:29,177 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 22:20:30,157 WARN L191 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-10-14 22:20:31,955 WARN L191 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2019-10-14 22:20:40,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:40,275 INFO L93 Difference]: Finished difference Result 1463 states and 2004 transitions. [2019-10-14 22:20:40,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 22:20:40,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-10-14 22:20:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:40,318 INFO L225 Difference]: With dead ends: 1463 [2019-10-14 22:20:40,318 INFO L226 Difference]: Without dead ends: 1009 [2019-10-14 22:20:40,327 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:20:40,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2019-10-14 22:20:40,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 782. [2019-10-14 22:20:40,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782 states. [2019-10-14 22:20:40,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1006 transitions. [2019-10-14 22:20:40,532 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1006 transitions. Word has length 52 [2019-10-14 22:20:40,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:40,533 INFO L462 AbstractCegarLoop]: Abstraction has 782 states and 1006 transitions. [2019-10-14 22:20:40,533 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 22:20:40,533 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1006 transitions. [2019-10-14 22:20:40,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-10-14 22:20:40,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:40,538 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:40,539 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:40,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:40,539 INFO L82 PathProgramCache]: Analyzing trace with hash -676068209, now seen corresponding path program 1 times [2019-10-14 22:20:40,539 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:40,539 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613520501] [2019-10-14 22:20:40,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:40,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:40,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:40,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:40,884 WARN L191 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 22:20:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:40,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:40,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:41,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:41,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 22:20:41,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613520501] [2019-10-14 22:20:41,068 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [143203552] [2019-10-14 22:20:41,071 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:20:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:41,414 INFO L256 TraceCheckSpWp]: Trace formula consists of 813 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 22:20:41,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:20:41,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 22:20:41,468 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:20:41,468 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2019-10-14 22:20:41,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360477040] [2019-10-14 22:20:41,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 22:20:41,471 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:41,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 22:20:41,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 22:20:41,472 INFO L87 Difference]: Start difference. First operand 782 states and 1006 transitions. Second operand 4 states. [2019-10-14 22:20:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:41,713 INFO L93 Difference]: Finished difference Result 1556 states and 2053 transitions. [2019-10-14 22:20:41,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 22:20:41,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2019-10-14 22:20:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:41,721 INFO L225 Difference]: With dead ends: 1556 [2019-10-14 22:20:41,721 INFO L226 Difference]: Without dead ends: 788 [2019-10-14 22:20:41,726 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:20:41,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2019-10-14 22:20:41,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2019-10-14 22:20:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 788 states. [2019-10-14 22:20:41,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 1014 transitions. [2019-10-14 22:20:41,870 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 1014 transitions. Word has length 56 [2019-10-14 22:20:41,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:41,871 INFO L462 AbstractCegarLoop]: Abstraction has 788 states and 1014 transitions. [2019-10-14 22:20:41,871 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 22:20:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 1014 transitions. [2019-10-14 22:20:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-10-14 22:20:41,874 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:41,874 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:42,081 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:20:42,081 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:42,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:42,081 INFO L82 PathProgramCache]: Analyzing trace with hash -142872701, now seen corresponding path program 1 times [2019-10-14 22:20:42,082 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:42,082 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718427437] [2019-10-14 22:20:42,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:42,082 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:42,082 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,577 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 22:20:42,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:42,774 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 22:20:42,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718427437] [2019-10-14 22:20:42,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:42,775 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:20:42,775 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824093578] [2019-10-14 22:20:42,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:20:42,778 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:42,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:20:42,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:20:42,780 INFO L87 Difference]: Start difference. First operand 788 states and 1014 transitions. Second operand 6 states. [2019-10-14 22:20:43,133 WARN L191 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 22:20:43,584 WARN L191 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-10-14 22:20:44,047 WARN L191 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 22:20:49,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:49,928 INFO L93 Difference]: Finished difference Result 861 states and 1111 transitions. [2019-10-14 22:20:49,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:20:49,929 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2019-10-14 22:20:49,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:49,938 INFO L225 Difference]: With dead ends: 861 [2019-10-14 22:20:49,938 INFO L226 Difference]: Without dead ends: 858 [2019-10-14 22:20:49,939 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:20:49,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2019-10-14 22:20:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 787. [2019-10-14 22:20:50,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 787 states. [2019-10-14 22:20:50,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 1012 transitions. [2019-10-14 22:20:50,070 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 1012 transitions. Word has length 58 [2019-10-14 22:20:50,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:50,073 INFO L462 AbstractCegarLoop]: Abstraction has 787 states and 1012 transitions. [2019-10-14 22:20:50,073 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 22:20:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 1012 transitions. [2019-10-14 22:20:50,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-10-14 22:20:50,080 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:50,080 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:50,081 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:50,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:50,081 INFO L82 PathProgramCache]: Analyzing trace with hash -134463179, now seen corresponding path program 1 times [2019-10-14 22:20:50,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:50,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973069527] [2019-10-14 22:20:50,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:50,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:50,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:50,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,600 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 22:20:50,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 22:20:50,775 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973069527] [2019-10-14 22:20:50,775 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:50,776 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:20:50,776 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738203269] [2019-10-14 22:20:50,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:20:50,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:50,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:20:50,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:20:50,778 INFO L87 Difference]: Start difference. First operand 787 states and 1012 transitions. Second operand 6 states. [2019-10-14 22:20:51,058 WARN L191 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 22:20:51,487 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-10-14 22:20:51,861 WARN L191 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2019-10-14 22:20:56,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:20:56,277 INFO L93 Difference]: Finished difference Result 860 states and 1109 transitions. [2019-10-14 22:20:56,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 22:20:56,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2019-10-14 22:20:56,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:20:56,285 INFO L225 Difference]: With dead ends: 860 [2019-10-14 22:20:56,285 INFO L226 Difference]: Without dead ends: 857 [2019-10-14 22:20:56,286 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2019-10-14 22:20:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2019-10-14 22:20:56,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 786. [2019-10-14 22:20:56,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2019-10-14 22:20:56,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1010 transitions. [2019-10-14 22:20:56,368 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1010 transitions. Word has length 59 [2019-10-14 22:20:56,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:20:56,369 INFO L462 AbstractCegarLoop]: Abstraction has 786 states and 1010 transitions. [2019-10-14 22:20:56,369 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 22:20:56,369 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1010 transitions. [2019-10-14 22:20:56,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-14 22:20:56,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:20:56,370 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-14 22:20:56,371 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:20:56,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:20:56,371 INFO L82 PathProgramCache]: Analyzing trace with hash 126236870, now seen corresponding path program 1 times [2019-10-14 22:20:56,371 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:20:56,371 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10581247] [2019-10-14 22:20:56,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:56,372 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:20:56,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:20:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,754 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2019-10-14 22:20:56,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:20:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-14 22:20:56,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10581247] [2019-10-14 22:20:56,967 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:20:56,967 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 22:20:56,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506819825] [2019-10-14 22:20:56,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 22:20:56,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:20:56,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 22:20:56,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 22:20:56,976 INFO L87 Difference]: Start difference. First operand 786 states and 1010 transitions. Second operand 6 states. [2019-10-14 22:20:57,320 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 22:20:57,729 WARN L191 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 198