/usr/bin/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-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 0.1.25-c90d42b [2020-09-24 15:36:34,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:36:34,668 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:36:34,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:36:34,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:36:34,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:36:34,698 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:36:34,700 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:36:34,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:36:34,703 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:36:34,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:36:34,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:36:34,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:36:34,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:36:34,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:36:34,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:36:34,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:36:34,713 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:36:34,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:36:34,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:36:34,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:36:34,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:36:34,722 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:36:34,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:36:34,726 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:36:34,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:36:34,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:36:34,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:36:34,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:36:34,730 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:36:34,730 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:36:34,731 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:36:34,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:36:34,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:36:34,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:36:34,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:36:34,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:36:34,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:36:34,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:36:34,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:36:34,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:36:34,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-09-24 15:36:34,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:36:34,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:36:34,769 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:36:34,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:36:34,769 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:36:34,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:36:34,770 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:36:34,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:36:34,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:36:34,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:36:34,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:36:34,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:36:34,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:36:34,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:36:34,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:36:34,772 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:36:34,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:36:34,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:36:34,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:36:34,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:36:34,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:36:34,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:36:34,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:36:34,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:36:34,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:36:34,774 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:36:34,774 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-24 15:36:34,774 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:36:35,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:36:35,294 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:36:35,299 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:36:35,303 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:36:35,303 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:36:35,304 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-24 15:36:35,399 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50beda8f6/c87d8bc86f714c979a5de47461dcf80d/FLAGb71e30c32 [2020-09-24 15:36:36,399 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:36:36,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-24 15:36:36,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50beda8f6/c87d8bc86f714c979a5de47461dcf80d/FLAGb71e30c32 [2020-09-24 15:36:36,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50beda8f6/c87d8bc86f714c979a5de47461dcf80d [2020-09-24 15:36:36,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:36:36,833 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:36:36,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:36:36,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:36:36,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:36:36,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:36" (1/1) ... [2020-09-24 15:36:36,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c19b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:36, skipping insertion in model container [2020-09-24 15:36:36,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:36:36" (1/1) ... [2020-09-24 15:36:36,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:36:36,996 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:36:38,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:36:38,616 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:36:39,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:36:39,147 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:36:39,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39 WrapperNode [2020-09-24 15:36:39,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:36:39,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:36:39,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:36:39,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:36:39,169 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... [2020-09-24 15:36:39,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:36:39,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:36:39,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:36:39,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:36:39,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-24 15:36:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:36:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:36:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-24 15:36:39,440 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-09-24 15:36:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-09-24 15:36:39,441 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-24 15:36:39,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-24 15:36:39,443 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-24 15:36:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 15:36:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-24 15:36:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-24 15:36:39,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-24 15:36:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-24 15:36:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-24 15:36:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-24 15:36:39,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-24 15:36:39,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-24 15:36:39,447 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-09-24 15:36:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-09-24 15:36:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-09-24 15:36:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-09-24 15:36:39,448 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-09-24 15:36:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-09-24 15:36:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-09-24 15:36:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-09-24 15:36:39,449 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-09-24 15:36:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-09-24 15:36:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-09-24 15:36:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-09-24 15:36:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-09-24 15:36:39,450 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-09-24 15:36:39,451 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-09-24 15:36:39,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-24 15:36:39,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-09-24 15:36:39,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:36:39,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-09-24 15:36:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-09-24 15:36:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-09-24 15:36:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-09-24 15:36:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-09-24 15:36:39,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-09-24 15:36:39,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-09-24 15:36:39,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-09-24 15:36:39,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-09-24 15:36:39,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-24 15:36:39,454 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-24 15:36:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-09-24 15:36:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-09-24 15:36:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-09-24 15:36:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-24 15:36:39,455 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-09-24 15:36:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-24 15:36:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-24 15:36:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-09-24 15:36:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-09-24 15:36:39,456 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-09-24 15:36:39,457 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-09-24 15:36:39,457 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-09-24 15:36:39,457 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-09-24 15:36:39,457 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-09-24 15:36:39,457 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-09-24 15:36:39,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-09-24 15:36:39,458 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-09-24 15:36:39,458 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-09-24 15:36:39,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-24 15:36:39,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-24 15:36:39,459 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-24 15:36:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:36:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-24 15:36:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-24 15:36:39,459 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-09-24 15:36:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-09-24 15:36:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-24 15:36:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-24 15:36:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-09-24 15:36:39,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-24 15:36:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-09-24 15:36:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-09-24 15:36:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-24 15:36:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-09-24 15:36:39,461 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-24 15:36:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-24 15:36:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-24 15:36:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-24 15:36:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-24 15:36:39,462 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-24 15:36:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 15:36:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-24 15:36:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:36:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-09-24 15:36:39,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-24 15:36:39,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-24 15:36:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-24 15:36:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-24 15:36:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-24 15:36:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-24 15:36:39,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-09-24 15:36:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-09-24 15:36:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-09-24 15:36:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-09-24 15:36:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-09-24 15:36:39,466 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-09-24 15:36:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-09-24 15:36:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-09-24 15:36:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-24 15:36:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-09-24 15:36:39,467 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-09-24 15:36:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-09-24 15:36:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-09-24 15:36:39,468 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-09-24 15:36:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-09-24 15:36:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-09-24 15:36:39,521 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-09-24 15:36:39,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:36:39,523 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-09-24 15:36:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-09-24 15:36:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-09-24 15:36:39,524 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-09-24 15:36:39,525 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-09-24 15:36:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-09-24 15:36:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-09-24 15:36:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-24 15:36:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-24 15:36:39,526 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-09-24 15:36:39,527 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-09-24 15:36:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-09-24 15:36:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-09-24 15:36:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-09-24 15:36:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-09-24 15:36:39,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-09-24 15:36:39,529 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-24 15:36:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-24 15:36:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:36:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-24 15:36:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-24 15:36:39,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:36:40,478 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-24 15:36:41,316 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-09-24 15:36:41,626 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:36:41,627 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:36:41,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:41 BoogieIcfgContainer [2020-09-24 15:36:41,641 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:36:41,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:36:41,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:36:41,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:36:41,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:36:36" (1/3) ... [2020-09-24 15:36:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad5addd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:41, skipping insertion in model container [2020-09-24 15:36:41,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:36:39" (2/3) ... [2020-09-24 15:36:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad5addd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:36:41, skipping insertion in model container [2020-09-24 15:36:41,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:36:41" (3/3) ... [2020-09-24 15:36:41,650 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 [2020-09-24 15:36:41,662 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:36:41,674 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:36:41,697 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:36:41,732 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:36:41,732 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:36:41,732 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:36:41,732 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:36:41,733 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:36:41,733 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:36:41,733 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:36:41,733 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:36:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2020-09-24 15:36:41,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 15:36:41,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:36:41,797 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-24 15:36:41,798 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:36:41,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:36:41,806 INFO L82 PathProgramCache]: Analyzing trace with hash -126969232, now seen corresponding path program 1 times [2020-09-24 15:36:41,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:36:41,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1366111745] [2020-09-24 15:36:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:36:42,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:42,894 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:36:42,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:42,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:36:43,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:36:43,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:36:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 15:36:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-24 15:36:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 15:36:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 15:36:43,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1366111745] [2020-09-24 15:36:43,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 15:36:43,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 15:36:43,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826302530] [2020-09-24 15:36:43,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:36:43,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:36:43,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:36:43,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:36:43,288 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 7 states. [2020-09-24 15:36:43,628 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:36:44,842 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 15:36:45,193 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-24 15:36:45,515 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 15:36:45,825 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:36:51,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:36:51,792 INFO L93 Difference]: Finished difference Result 2166 states and 2514 transitions. [2020-09-24 15:36:51,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 15:36:51,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-09-24 15:36:51,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:36:51,826 INFO L225 Difference]: With dead ends: 2166 [2020-09-24 15:36:51,826 INFO L226 Difference]: Without dead ends: 1174 [2020-09-24 15:36:51,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:36:51,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2020-09-24 15:36:52,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1062. [2020-09-24 15:36:52,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1062 states. [2020-09-24 15:36:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1062 states to 1062 states and 1184 transitions. [2020-09-24 15:36:52,021 INFO L78 Accepts]: Start accepts. Automaton has 1062 states and 1184 transitions. Word has length 190 [2020-09-24 15:36:52,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:36:52,022 INFO L479 AbstractCegarLoop]: Abstraction has 1062 states and 1184 transitions. [2020-09-24 15:36:52,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:36:52,023 INFO L276 IsEmpty]: Start isEmpty. Operand 1062 states and 1184 transitions. [2020-09-24 15:36:52,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-09-24 15:36:52,029 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:36:52,029 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-24 15:36:52,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:36:52,030 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:36:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:36:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1971199252, now seen corresponding path program 1 times [2020-09-24 15:36:52,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:36:52,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635456422] [2020-09-24 15:36:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:36:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,680 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:36:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:52,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:36:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:36:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:36:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 15:36:52,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 15:36:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2020-09-24 15:36:52,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:52,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:36:52,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:36:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 15:36:53,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635456422] [2020-09-24 15:36:53,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:36:53,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:36:53,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189981563] [2020-09-24 15:36:53,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:36:53,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:36:53,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:36:53,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:36:53,028 INFO L87 Difference]: Start difference. First operand 1062 states and 1184 transitions. Second operand 6 states. [2020-09-24 15:36:53,300 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:36:54,440 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:36:54,981 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 15:36:56,522 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-09-24 15:36:56,817 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 15:37:03,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:03,112 INFO L93 Difference]: Finished difference Result 3025 states and 3422 transitions. [2020-09-24 15:37:03,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 15:37:03,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 198 [2020-09-24 15:37:03,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:03,130 INFO L225 Difference]: With dead ends: 3025 [2020-09-24 15:37:03,130 INFO L226 Difference]: Without dead ends: 2096 [2020-09-24 15:37:03,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:37:03,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2096 states. [2020-09-24 15:37:03,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2096 to 1906. [2020-09-24 15:37:03,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1906 states. [2020-09-24 15:37:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 2135 transitions. [2020-09-24 15:37:03,305 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 2135 transitions. Word has length 198 [2020-09-24 15:37:03,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:03,308 INFO L479 AbstractCegarLoop]: Abstraction has 1906 states and 2135 transitions. [2020-09-24 15:37:03,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:37:03,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 2135 transitions. [2020-09-24 15:37:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-09-24 15:37:03,317 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:03,318 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:03,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:37:03,319 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash 216367441, now seen corresponding path program 1 times [2020-09-24 15:37:03,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:03,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812500283] [2020-09-24 15:37:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:03,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,177 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:37:04,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:37:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:37:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:37:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 15:37:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 15:37:04,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 15:37:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 15:37:04,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812500283] [2020-09-24 15:37:04,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:37:04,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:37:04,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586990532] [2020-09-24 15:37:04,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:37:04,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:04,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:37:04,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:37:04,629 INFO L87 Difference]: Start difference. First operand 1906 states and 2135 transitions. Second operand 6 states. [2020-09-24 15:37:04,916 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:37:05,627 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 15:37:06,018 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:37:06,555 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 15:37:11,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:11,251 INFO L93 Difference]: Finished difference Result 2097 states and 2372 transitions. [2020-09-24 15:37:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:37:11,252 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 212 [2020-09-24 15:37:11,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:11,264 INFO L225 Difference]: With dead ends: 2097 [2020-09-24 15:37:11,264 INFO L226 Difference]: Without dead ends: 2094 [2020-09-24 15:37:11,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:37:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2094 states. [2020-09-24 15:37:11,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2094 to 1905. [2020-09-24 15:37:11,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1905 states. [2020-09-24 15:37:11,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2133 transitions. [2020-09-24 15:37:11,376 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2133 transitions. Word has length 212 [2020-09-24 15:37:11,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:11,377 INFO L479 AbstractCegarLoop]: Abstraction has 1905 states and 2133 transitions. [2020-09-24 15:37:11,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:37:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2133 transitions. [2020-09-24 15:37:11,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-24 15:37:11,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:11,381 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:11,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:37:11,381 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:11,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:11,381 INFO L82 PathProgramCache]: Analyzing trace with hash -1883054238, now seen corresponding path program 1 times [2020-09-24 15:37:11,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:11,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25110253] [2020-09-24 15:37:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,109 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:37:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:37:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:37:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:37:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 15:37:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 15:37:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 15:37:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:12,522 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 15:37:12,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25110253] [2020-09-24 15:37:12,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:37:12,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:37:12,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310358738] [2020-09-24 15:37:12,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:37:12,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:12,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:37:12,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:37:12,530 INFO L87 Difference]: Start difference. First operand 1905 states and 2133 transitions. Second operand 6 states. [2020-09-24 15:37:12,826 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:37:13,743 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-24 15:37:14,126 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-24 15:37:14,602 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-09-24 15:37:19,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:37:19,213 INFO L93 Difference]: Finished difference Result 2096 states and 2370 transitions. [2020-09-24 15:37:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 15:37:19,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 213 [2020-09-24 15:37:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:37:19,225 INFO L225 Difference]: With dead ends: 2096 [2020-09-24 15:37:19,225 INFO L226 Difference]: Without dead ends: 2093 [2020-09-24 15:37:19,227 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-09-24 15:37:19,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2020-09-24 15:37:19,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1904. [2020-09-24 15:37:19,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1904 states. [2020-09-24 15:37:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1904 states to 1904 states and 2131 transitions. [2020-09-24 15:37:19,335 INFO L78 Accepts]: Start accepts. Automaton has 1904 states and 2131 transitions. Word has length 213 [2020-09-24 15:37:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:37:19,336 INFO L479 AbstractCegarLoop]: Abstraction has 1904 states and 2131 transitions. [2020-09-24 15:37:19,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 15:37:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 1904 states and 2131 transitions. [2020-09-24 15:37:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 15:37:19,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:37:19,340 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:37:19,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 15:37:19,340 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:37:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:37:19,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1754355316, now seen corresponding path program 1 times [2020-09-24 15:37:19,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:37:19,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187350751] [2020-09-24 15:37:19,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:37:19,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,102 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-24 15:37:20,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:37:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-24 15:37:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-09-24 15:37:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-24 15:37:20,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-09-24 15:37:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-09-24 15:37:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-24 15:37:20,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-24 15:37:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:37:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-24 15:37:20,550 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187350751] [2020-09-24 15:37:20,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:37:20,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 15:37:20,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804649507] [2020-09-24 15:37:20,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 15:37:20,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:37:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 15:37:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 15:37:20,557 INFO L87 Difference]: Start difference. First operand 1904 states and 2131 transitions. Second operand 6 states. [2020-09-24 15:37:20,913 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-24 15:37:21,865 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-24 15:37:22,281 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-24 15:37:22,714 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 192