java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:06:13,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:06:13,381 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:06:13,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:06:13,400 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:06:13,402 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:06:13,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:06:13,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:06:13,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:06:13,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:06:13,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:06:13,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:06:13,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:06:13,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:06:13,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:06:13,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:06:13,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:06:13,425 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:06:13,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:06:13,430 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:06:13,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:06:13,436 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:06:13,438 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:06:13,439 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:06:13,442 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:06:13,442 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:06:13,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:06:13,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:06:13,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:06:13,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:06:13,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:06:13,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:06:13,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:06:13,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:06:13,453 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:06:13,453 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:06:13,454 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:06:13,454 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:06:13,454 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:06:13,456 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:06:13,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:06:13,460 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 [2019-10-13 22:06:13,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:06:13,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:06:13,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:06:13,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:06:13,475 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:06:13,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:06:13,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:06:13,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:06:13,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:06:13,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:06:13,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:06:13,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:06:13,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:06:13,477 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:06:13,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:06:13,478 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:06:13,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:06:13,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:06:13,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:06:13,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:06:13,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:06:13,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:06:13,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:06:13,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:06:13,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:06:13,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:06:13,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:06:13,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:06:13,480 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:06:13,757 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:06:13,770 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:06:13,773 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:06:13,775 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:06:13,775 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:06:13,776 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2019-10-13 22:06:13,853 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a50b58b/c6dab1b70b1a4db78172499a16dfd669/FLAG5e95d91dc [2019-10-13 22:06:14,626 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:06:14,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2019-10-13 22:06:14,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a50b58b/c6dab1b70b1a4db78172499a16dfd669/FLAG5e95d91dc [2019-10-13 22:06:14,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84a50b58b/c6dab1b70b1a4db78172499a16dfd669 [2019-10-13 22:06:14,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:06:14,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:06:14,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:06:14,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:06:14,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:06:14,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:06:14" (1/1) ... [2019-10-13 22:06:14,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38730a2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:14, skipping insertion in model container [2019-10-13 22:06:14,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:06:14" (1/1) ... [2019-10-13 22:06:14,713 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:06:14,812 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:06:16,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:06:16,190 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:06:16,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:06:16,618 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:06:16,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16 WrapperNode [2019-10-13 22:06:16,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:06:16,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:06:16,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:06:16,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:06:16,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,837 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (1/1) ... [2019-10-13 22:06:16,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:06:16,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:06:16,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:06:16,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:06:16,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (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 [2019-10-13 22:06:17,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:06:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:06:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-13 22:06:17,004 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2019-10-13 22:06:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2019-10-13 22:06:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-13 22:06:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2019-10-13 22:06:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2019-10-13 22:06:17,005 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:06:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 22:06:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 22:06:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 22:06:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-13 22:06:17,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:06:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:06:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:06:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:06:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 22:06:17,007 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2019-10-13 22:06:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_drvdata [2019-10-13 22:06:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-13 22:06:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:06:17,008 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_status [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_ioctl [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_compat_ioctl [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_open [2019-10-13 22:06:17,009 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_release [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_poll [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_isr [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_get_free [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_probe [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_remove [2019-10-13 22:06:17,010 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_suspend [2019-10-13 22:06:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_resume [2019-10-13 22:06:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_init [2019-10-13 22:06:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure phantom_exit [2019-10-13 22:06:17,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:06:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_1 [2019-10-13 22:06:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_2 [2019-10-13 22:06:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_3 [2019-10-13 22:06:17,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_4 [2019-10-13 22:06:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_5 [2019-10-13 22:06:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_6 [2019-10-13 22:06:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_7 [2019-10-13 22:06:17,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_8 [2019-10-13 22:06:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_9 [2019-10-13 22:06:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_10 [2019-10-13 22:06:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-10-13 22:06:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_12 [2019-10-13 22:06:17,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_13 [2019-10-13 22:06:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_14 [2019-10-13 22:06:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_15 [2019-10-13 22:06:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_16 [2019-10-13 22:06:17,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_init_17 [2019-10-13 22:06:17,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cdev_del_18 [2019-10-13 22:06:17,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:06:17,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:06:17,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:06:17,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 22:06:17,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-13 22:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-13 22:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-13 22:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 22:06:17,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 22:06:17,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_open_lock_of_phantom_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_open_lock_of_phantom_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_open_lock_of_phantom_device [2019-10-13 22:06:17,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_open_lock_of_phantom_device [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_open_lock_of_phantom_device [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_open_lock_of_phantom_device [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_open_lock_of_phantom_device [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_phantom_mutex [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_phantom_mutex [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_phantom_mutex [2019-10-13 22:06:17,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_phantom_mutex [2019-10-13 22:06:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_phantom_mutex [2019-10-13 22:06:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_phantom_mutex [2019-10-13 22:06:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_phantom_mutex [2019-10-13 22:06:17,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:06:17,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:06:17,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __class_create [2019-10-13 22:06:17,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2019-10-13 22:06:17,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-13 22:06:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-13 22:06:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __pci_register_driver [2019-10-13 22:06:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:06:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-13 22:06:17,025 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-13 22:06:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:06:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 22:06:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 22:06:17,026 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 22:06:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:06:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_chrdev_region [2019-10-13 22:06:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2019-10-13 22:06:17,027 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2019-10-13 22:06:17,028 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_init [2019-10-13 22:06:17,028 INFO L138 BoogieDeclarations]: Found implementation of procedure class_create_file [2019-10-13 22:06:17,028 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2019-10-13 22:06:17,028 INFO L138 BoogieDeclarations]: Found implementation of procedure class_remove_file [2019-10-13 22:06:17,028 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure device_destroy [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2019-10-13 22:06:17,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-13 22:06:17,030 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-13 22:06:17,031 INFO L138 BoogieDeclarations]: Found implementation of procedure no_llseek [2019-10-13 22:06:17,031 INFO L138 BoogieDeclarations]: Found implementation of procedure nonseekable_open [2019-10-13 22:06:17,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2019-10-13 22:06:17,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2019-10-13 22:06:17,031 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_regions [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unregister_driver [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:06:17,032 INFO L138 BoogieDeclarations]: Found implementation of procedure request_threaded_irq [2019-10-13 22:06:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure show_class_attr_string [2019-10-13 22:06:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure synchronize_irq [2019-10-13 22:06:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2019-10-13 22:06:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_fmt [2019-10-13 22:06:17,033 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-13 22:06:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:06:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:06:17,034 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:06:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:06:17,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:06:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:06:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2019-10-13 22:06:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:06:17,035 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:06:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_fmt [2019-10-13 22:06:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-13 22:06:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2019-10-13 22:06:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2019-10-13 22:06:17,036 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-13 22:06:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:06:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2019-10-13 22:06:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:06:17,037 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2019-10-13 22:06:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-13 22:06:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-13 22:06:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_6 [2019-10-13 22:06:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-13 22:06:17,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_2 [2019-10-13 22:06:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_4 [2019-10-13 22:06:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_7 [2019-10-13 22:06:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_10 [2019-10-13 22:06:17,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-10-13 22:06:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_12 [2019-10-13 22:06:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_13 [2019-10-13 22:06:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_14 [2019-10-13 22:06:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_16 [2019-10-13 22:06:17,040 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2019-10-13 22:06:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_9 [2019-10-13 22:06:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-13 22:06:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_1 [2019-10-13 22:06:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_3 [2019-10-13 22:06:17,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_5 [2019-10-13 22:06:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_8 [2019-10-13 22:06:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_15 [2019-10-13 22:06:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-13 22:06:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-13 22:06:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-13 22:06:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-13 22:06:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-13 22:06:17,043 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_open_lock_of_phantom_device [2019-10-13 22:06:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_open_lock_of_phantom_device [2019-10-13 22:06:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_open_lock_of_phantom_device [2019-10-13 22:06:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_phantom_mutex [2019-10-13 22:06:17,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_phantom_mutex [2019-10-13 22:06:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:06:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:06:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 22:06:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 22:06:17,045 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 22:06:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:06:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:06:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 22:06:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 22:06:17,046 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2019-10-13 22:06:17,047 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_chrdev_region [2019-10-13 22:06:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2019-10-13 22:06:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure no_llseek [2019-10-13 22:06:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure nonseekable_open [2019-10-13 22:06:17,048 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-13 22:06:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure class_create_file [2019-10-13 22:06:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure class_remove_file [2019-10-13 22:06:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure show_class_attr_string [2019-10-13 22:06:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure __class_create [2019-10-13 22:06:17,049 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2019-10-13 22:06:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 22:06:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 22:06:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure device_create [2019-10-13 22:06:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure device_destroy [2019-10-13 22:06:17,050 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 22:06:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2019-10-13 22:06:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2019-10-13 22:06:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_regions [2019-10-13 22:06:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2019-10-13 22:06:17,051 INFO L130 BoogieDeclarations]: Found specification of procedure __pci_register_driver [2019-10-13 22:06:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unregister_driver [2019-10-13 22:06:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:06:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:06:17,052 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:06:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:06:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:06:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:06:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:06:17,053 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:06:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 22:06:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2019-10-13 22:06:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_drvdata [2019-10-13 22:06:17,054 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:06:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-13 22:06:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-13 22:06:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:06:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:06:17,055 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2019-10-13 22:06:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-13 22:06:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:06:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure synchronize_irq [2019-10-13 22:06:17,056 INFO L130 BoogieDeclarations]: Found specification of procedure request_threaded_irq [2019-10-13 22:06:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2019-10-13 22:06:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2019-10-13 22:06:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_init [2019-10-13 22:06:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_init_17 [2019-10-13 22:06:17,057 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cdev_del_18 [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_status [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:06:17,058 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_ioctl [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_compat_ioctl [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_open [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_release [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_poll [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_isr [2019-10-13 22:06:17,059 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_get_free [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_probe [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_remove [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_suspend [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_resume [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_init [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure phantom_exit [2019-10-13 22:06:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_cred_guard_mutex_of_signal_struct [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-13 22:06:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_open_lock_of_phantom_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_open_lock_of_phantom_device [2019-10-13 22:06:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_open_lock_of_phantom_device [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_open_lock_of_phantom_device [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_phantom_mutex [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_phantom_mutex [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_phantom_mutex [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_phantom_mutex [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_phantom_mutex [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:06:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:06:17,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:06:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:06:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:06:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:06:17,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:06:23,359 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:06:23,359 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:06:23,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:06:23 BoogieIcfgContainer [2019-10-13 22:06:23,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:06:23,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:06:23,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:06:23,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:06:23,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:06:14" (1/3) ... [2019-10-13 22:06:23,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8b566f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:06:23, skipping insertion in model container [2019-10-13 22:06:23,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:06:16" (2/3) ... [2019-10-13 22:06:23,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f8b566f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:06:23, skipping insertion in model container [2019-10-13 22:06:23,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:06:23" (3/3) ... [2019-10-13 22:06:23,369 INFO L109 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--misc--phantom.ko-main.cil.out.i [2019-10-13 22:06:23,378 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:06:23,388 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:06:23,399 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:06:23,431 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:06:23,431 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:06:23,431 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:06:23,431 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:06:23,432 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:06:23,432 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:06:23,432 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:06:23,432 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:06:23,477 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states. [2019-10-13 22:06:23,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-13 22:06:23,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:23,489 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:23,491 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:23,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:23,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2074278368, now seen corresponding path program 1 times [2019-10-13 22:06:23,505 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:23,506 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393006718] [2019-10-13 22:06:23,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:23,506 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:23,506 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:24,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:24,162 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393006718] [2019-10-13 22:06:24,163 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:24,163 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:24,164 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727187694] [2019-10-13 22:06:24,168 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:24,168 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:24,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:24,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:24,189 INFO L87 Difference]: Start difference. First operand 773 states. Second operand 3 states. [2019-10-13 22:06:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:24,469 INFO L93 Difference]: Finished difference Result 1578 states and 2052 transitions. [2019-10-13 22:06:24,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:24,470 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-13 22:06:24,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:24,499 INFO L225 Difference]: With dead ends: 1578 [2019-10-13 22:06:24,500 INFO L226 Difference]: Without dead ends: 911 [2019-10-13 22:06:24,515 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2019-10-13 22:06:24,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 874. [2019-10-13 22:06:24,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 874 states. [2019-10-13 22:06:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1109 transitions. [2019-10-13 22:06:24,678 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1109 transitions. Word has length 25 [2019-10-13 22:06:24,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:24,679 INFO L462 AbstractCegarLoop]: Abstraction has 874 states and 1109 transitions. [2019-10-13 22:06:24,681 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1109 transitions. [2019-10-13 22:06:24,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-13 22:06:24,687 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:24,687 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:24,687 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:24,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:24,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1615595574, now seen corresponding path program 1 times [2019-10-13 22:06:24,688 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:24,688 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53461965] [2019-10-13 22:06:24,688 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:24,689 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:24,689 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:24,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:24,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:24,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53461965] [2019-10-13 22:06:24,859 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:24,859 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:24,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891431998] [2019-10-13 22:06:24,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:24,861 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:24,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:24,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:24,862 INFO L87 Difference]: Start difference. First operand 874 states and 1109 transitions. Second operand 3 states. [2019-10-13 22:06:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:26,012 INFO L93 Difference]: Finished difference Result 2486 states and 3159 transitions. [2019-10-13 22:06:26,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:26,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-13 22:06:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:26,037 INFO L225 Difference]: With dead ends: 2486 [2019-10-13 22:06:26,038 INFO L226 Difference]: Without dead ends: 1621 [2019-10-13 22:06:26,042 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:26,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2019-10-13 22:06:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1614. [2019-10-13 22:06:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1614 states. [2019-10-13 22:06:26,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1614 states to 1614 states and 2047 transitions. [2019-10-13 22:06:26,183 INFO L78 Accepts]: Start accepts. Automaton has 1614 states and 2047 transitions. Word has length 40 [2019-10-13 22:06:26,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:26,183 INFO L462 AbstractCegarLoop]: Abstraction has 1614 states and 2047 transitions. [2019-10-13 22:06:26,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:26,184 INFO L276 IsEmpty]: Start isEmpty. Operand 1614 states and 2047 transitions. [2019-10-13 22:06:26,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-13 22:06:26,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:26,195 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:26,195 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:26,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:26,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1852843633, now seen corresponding path program 1 times [2019-10-13 22:06:26,196 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:26,198 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493966250] [2019-10-13 22:06:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:26,198 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:26,198 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:26,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:26,417 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493966250] [2019-10-13 22:06:26,417 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:26,417 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:26,418 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749349503] [2019-10-13 22:06:26,418 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:26,418 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:26,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:26,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:26,419 INFO L87 Difference]: Start difference. First operand 1614 states and 2047 transitions. Second operand 3 states. [2019-10-13 22:06:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:27,445 INFO L93 Difference]: Finished difference Result 1616 states and 2048 transitions. [2019-10-13 22:06:27,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:27,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-13 22:06:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:27,459 INFO L225 Difference]: With dead ends: 1616 [2019-10-13 22:06:27,460 INFO L226 Difference]: Without dead ends: 1613 [2019-10-13 22:06:27,461 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:27,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2019-10-13 22:06:27,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1613. [2019-10-13 22:06:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1613 states. [2019-10-13 22:06:27,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2045 transitions. [2019-10-13 22:06:27,557 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2045 transitions. Word has length 48 [2019-10-13 22:06:27,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:27,558 INFO L462 AbstractCegarLoop]: Abstraction has 1613 states and 2045 transitions. [2019-10-13 22:06:27,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:27,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2045 transitions. [2019-10-13 22:06:27,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-13 22:06:27,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:27,562 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:27,563 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:27,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:27,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1604320674, now seen corresponding path program 1 times [2019-10-13 22:06:27,564 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:27,564 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368090150] [2019-10-13 22:06:27,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:27,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:27,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:27,920 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368090150] [2019-10-13 22:06:27,920 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:27,920 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:27,921 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978185345] [2019-10-13 22:06:27,921 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:27,922 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:27,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:27,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:27,922 INFO L87 Difference]: Start difference. First operand 1613 states and 2045 transitions. Second operand 3 states. [2019-10-13 22:06:28,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:28,502 INFO L93 Difference]: Finished difference Result 1615 states and 2046 transitions. [2019-10-13 22:06:28,502 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:28,502 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2019-10-13 22:06:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:28,512 INFO L225 Difference]: With dead ends: 1615 [2019-10-13 22:06:28,513 INFO L226 Difference]: Without dead ends: 1612 [2019-10-13 22:06:28,514 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:28,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2019-10-13 22:06:28,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1612. [2019-10-13 22:06:28,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2019-10-13 22:06:28,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2043 transitions. [2019-10-13 22:06:28,590 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2043 transitions. Word has length 49 [2019-10-13 22:06:28,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:28,592 INFO L462 AbstractCegarLoop]: Abstraction has 1612 states and 2043 transitions. [2019-10-13 22:06:28,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:28,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2043 transitions. [2019-10-13 22:06:28,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-13 22:06:28,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:28,594 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:28,594 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:28,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:28,594 INFO L82 PathProgramCache]: Analyzing trace with hash 1804928626, now seen corresponding path program 1 times [2019-10-13 22:06:28,595 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:28,595 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628820293] [2019-10-13 22:06:28,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:28,595 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:28,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:28,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:28,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:28,753 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628820293] [2019-10-13 22:06:28,754 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:28,754 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:28,754 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222156514] [2019-10-13 22:06:28,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:28,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:28,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:28,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:28,758 INFO L87 Difference]: Start difference. First operand 1612 states and 2043 transitions. Second operand 3 states. [2019-10-13 22:06:29,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:29,480 INFO L93 Difference]: Finished difference Result 1614 states and 2044 transitions. [2019-10-13 22:06:29,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:29,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 50 [2019-10-13 22:06:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:29,494 INFO L225 Difference]: With dead ends: 1614 [2019-10-13 22:06:29,494 INFO L226 Difference]: Without dead ends: 1611 [2019-10-13 22:06:29,496 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2019-10-13 22:06:29,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1611. [2019-10-13 22:06:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1611 states. [2019-10-13 22:06:29,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1611 states to 1611 states and 2041 transitions. [2019-10-13 22:06:29,596 INFO L78 Accepts]: Start accepts. Automaton has 1611 states and 2041 transitions. Word has length 50 [2019-10-13 22:06:29,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:29,597 INFO L462 AbstractCegarLoop]: Abstraction has 1611 states and 2041 transitions. [2019-10-13 22:06:29,597 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1611 states and 2041 transitions. [2019-10-13 22:06:29,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-13 22:06:29,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:29,601 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:29,602 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash 117479393, now seen corresponding path program 1 times [2019-10-13 22:06:29,602 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:29,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776554410] [2019-10-13 22:06:29,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:29,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:29,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:29,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:29,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776554410] [2019-10-13 22:06:29,739 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:29,739 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:29,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983412550] [2019-10-13 22:06:29,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:29,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:29,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:29,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:29,741 INFO L87 Difference]: Start difference. First operand 1611 states and 2041 transitions. Second operand 3 states. [2019-10-13 22:06:30,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:30,573 INFO L93 Difference]: Finished difference Result 3070 states and 3903 transitions. [2019-10-13 22:06:30,573 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:30,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2019-10-13 22:06:30,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:30,591 INFO L225 Difference]: With dead ends: 3070 [2019-10-13 22:06:30,592 INFO L226 Difference]: Without dead ends: 3065 [2019-10-13 22:06:30,594 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:30,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3065 states. [2019-10-13 22:06:30,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3065 to 3061. [2019-10-13 22:06:30,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3061 states. [2019-10-13 22:06:30,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3061 states to 3061 states and 3891 transitions. [2019-10-13 22:06:30,755 INFO L78 Accepts]: Start accepts. Automaton has 3061 states and 3891 transitions. Word has length 51 [2019-10-13 22:06:30,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:30,758 INFO L462 AbstractCegarLoop]: Abstraction has 3061 states and 3891 transitions. [2019-10-13 22:06:30,758 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:30,758 INFO L276 IsEmpty]: Start isEmpty. Operand 3061 states and 3891 transitions. [2019-10-13 22:06:30,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-13 22:06:30,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:30,759 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:30,760 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:30,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:30,760 INFO L82 PathProgramCache]: Analyzing trace with hash -653834411, now seen corresponding path program 1 times [2019-10-13 22:06:30,760 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:30,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578413000] [2019-10-13 22:06:30,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:30,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:30,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:30,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:06:30,917 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578413000] [2019-10-13 22:06:30,918 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:30,918 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:30,918 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905156088] [2019-10-13 22:06:30,919 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:30,919 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:30,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:30,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:30,920 INFO L87 Difference]: Start difference. First operand 3061 states and 3891 transitions. Second operand 3 states. [2019-10-13 22:06:31,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:31,927 INFO L93 Difference]: Finished difference Result 3090 states and 3910 transitions. [2019-10-13 22:06:31,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:31,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-10-13 22:06:31,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:31,947 INFO L225 Difference]: With dead ends: 3090 [2019-10-13 22:06:31,947 INFO L226 Difference]: Without dead ends: 3041 [2019-10-13 22:06:31,950 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2019-10-13 22:06:32,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 3038. [2019-10-13 22:06:32,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3038 states. [2019-10-13 22:06:32,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3038 states to 3038 states and 3850 transitions. [2019-10-13 22:06:32,109 INFO L78 Accepts]: Start accepts. Automaton has 3038 states and 3850 transitions. Word has length 52 [2019-10-13 22:06:32,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:32,109 INFO L462 AbstractCegarLoop]: Abstraction has 3038 states and 3850 transitions. [2019-10-13 22:06:32,110 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:32,110 INFO L276 IsEmpty]: Start isEmpty. Operand 3038 states and 3850 transitions. [2019-10-13 22:06:32,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-10-13 22:06:32,123 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:32,123 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:32,124 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:32,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:32,124 INFO L82 PathProgramCache]: Analyzing trace with hash 610273958, now seen corresponding path program 1 times [2019-10-13 22:06:32,125 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:32,125 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551934152] [2019-10-13 22:06:32,125 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:32,126 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:32,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:32,482 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2019-10-13 22:06:32,482 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551934152] [2019-10-13 22:06:32,483 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:32,483 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:32,483 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793271271] [2019-10-13 22:06:32,484 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:32,485 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:32,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:32,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:32,486 INFO L87 Difference]: Start difference. First operand 3038 states and 3850 transitions. Second operand 3 states. [2019-10-13 22:06:32,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:32,717 INFO L93 Difference]: Finished difference Result 5669 states and 7177 transitions. [2019-10-13 22:06:32,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:32,717 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2019-10-13 22:06:32,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:32,733 INFO L225 Difference]: With dead ends: 5669 [2019-10-13 22:06:32,734 INFO L226 Difference]: Without dead ends: 2640 [2019-10-13 22:06:32,745 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:32,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2019-10-13 22:06:32,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2399. [2019-10-13 22:06:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2399 states. [2019-10-13 22:06:32,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 3075 transitions. [2019-10-13 22:06:32,860 INFO L78 Accepts]: Start accepts. Automaton has 2399 states and 3075 transitions. Word has length 184 [2019-10-13 22:06:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:32,861 INFO L462 AbstractCegarLoop]: Abstraction has 2399 states and 3075 transitions. [2019-10-13 22:06:32,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2399 states and 3075 transitions. [2019-10-13 22:06:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2019-10-13 22:06:32,868 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:32,868 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:32,869 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:32,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:32,869 INFO L82 PathProgramCache]: Analyzing trace with hash -804080639, now seen corresponding path program 1 times [2019-10-13 22:06:32,869 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:32,870 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890415812] [2019-10-13 22:06:32,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:32,870 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:32,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:32,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:33,172 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 22:06:33,173 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890415812] [2019-10-13 22:06:33,174 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:33,174 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:33,174 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265324162] [2019-10-13 22:06:33,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:33,175 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:33,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:33,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:33,176 INFO L87 Difference]: Start difference. First operand 2399 states and 3075 transitions. Second operand 3 states. [2019-10-13 22:06:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:34,753 INFO L93 Difference]: Finished difference Result 5490 states and 7031 transitions. [2019-10-13 22:06:34,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:34,754 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 219 [2019-10-13 22:06:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:34,773 INFO L225 Difference]: With dead ends: 5490 [2019-10-13 22:06:34,773 INFO L226 Difference]: Without dead ends: 3119 [2019-10-13 22:06:34,783 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:34,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3119 states. [2019-10-13 22:06:34,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3119 to 3051. [2019-10-13 22:06:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3051 states. [2019-10-13 22:06:34,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 3890 transitions. [2019-10-13 22:06:34,922 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 3890 transitions. Word has length 219 [2019-10-13 22:06:34,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:34,924 INFO L462 AbstractCegarLoop]: Abstraction has 3051 states and 3890 transitions. [2019-10-13 22:06:34,925 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:34,925 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 3890 transitions. [2019-10-13 22:06:34,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2019-10-13 22:06:34,929 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:34,930 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:34,930 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:34,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:34,930 INFO L82 PathProgramCache]: Analyzing trace with hash 2103352101, now seen corresponding path program 1 times [2019-10-13 22:06:34,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:34,931 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221614841] [2019-10-13 22:06:34,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:34,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:34,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:35,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:35,207 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:06:35,208 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221614841] [2019-10-13 22:06:35,209 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:35,209 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:06:35,209 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647227101] [2019-10-13 22:06:35,210 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:06:35,210 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:35,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:06:35,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:35,214 INFO L87 Difference]: Start difference. First operand 3051 states and 3890 transitions. Second operand 3 states. [2019-10-13 22:06:35,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:35,902 INFO L93 Difference]: Finished difference Result 3056 states and 3893 transitions. [2019-10-13 22:06:35,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:06:35,903 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 230 [2019-10-13 22:06:35,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:35,920 INFO L225 Difference]: With dead ends: 3056 [2019-10-13 22:06:35,920 INFO L226 Difference]: Without dead ends: 3053 [2019-10-13 22:06:35,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:06:35,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3053 states. [2019-10-13 22:06:36,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3053 to 3050. [2019-10-13 22:06:36,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3050 states. [2019-10-13 22:06:36,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3050 states to 3050 states and 3885 transitions. [2019-10-13 22:06:36,061 INFO L78 Accepts]: Start accepts. Automaton has 3050 states and 3885 transitions. Word has length 230 [2019-10-13 22:06:36,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:36,062 INFO L462 AbstractCegarLoop]: Abstraction has 3050 states and 3885 transitions. [2019-10-13 22:06:36,062 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:06:36,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3050 states and 3885 transitions. [2019-10-13 22:06:36,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-10-13 22:06:36,068 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:36,068 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:36,068 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:36,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:36,069 INFO L82 PathProgramCache]: Analyzing trace with hash -134414782, now seen corresponding path program 1 times [2019-10-13 22:06:36,069 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:36,069 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096906786] [2019-10-13 22:06:36,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:36,070 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:36,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:06:36,485 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096906786] [2019-10-13 22:06:36,486 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:06:36,486 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 22:06:36,486 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084597039] [2019-10-13 22:06:36,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 22:06:36,487 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:36,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 22:06:36,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:06:36,487 INFO L87 Difference]: Start difference. First operand 3050 states and 3885 transitions. Second operand 8 states. [2019-10-13 22:06:43,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:06:43,972 INFO L93 Difference]: Finished difference Result 3106 states and 3948 transitions. [2019-10-13 22:06:43,973 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 22:06:43,973 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2019-10-13 22:06:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:06:43,993 INFO L225 Difference]: With dead ends: 3106 [2019-10-13 22:06:43,994 INFO L226 Difference]: Without dead ends: 3103 [2019-10-13 22:06:43,996 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:06:44,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3103 states. [2019-10-13 22:06:44,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3103 to 3103. [2019-10-13 22:06:44,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3103 states. [2019-10-13 22:06:44,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3103 states to 3103 states and 3942 transitions. [2019-10-13 22:06:44,120 INFO L78 Accepts]: Start accepts. Automaton has 3103 states and 3942 transitions. Word has length 231 [2019-10-13 22:06:44,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:06:44,121 INFO L462 AbstractCegarLoop]: Abstraction has 3103 states and 3942 transitions. [2019-10-13 22:06:44,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 22:06:44,121 INFO L276 IsEmpty]: Start isEmpty. Operand 3103 states and 3942 transitions. [2019-10-13 22:06:44,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2019-10-13 22:06:44,128 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:06:44,128 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:06:44,129 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:06:44,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:06:44,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1002738725, now seen corresponding path program 1 times [2019-10-13 22:06:44,129 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:06:44,130 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134330415] [2019-10-13 22:06:44,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:44,130 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:06:44,130 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:06:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2019-10-13 22:06:44,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134330415] [2019-10-13 22:06:44,583 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023075769] [2019-10-13 22:06:44,583 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 [2019-10-13 22:06:45,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:06:45,550 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 22:06:45,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:06:45,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:06:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2019-10-13 22:06:45,777 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:06:45,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:06:45,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:06:45,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:06:46,351 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 22:06:46,351 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:06:46,352 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [8] total 12 [2019-10-13 22:06:46,352 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297865473] [2019-10-13 22:06:46,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 22:06:46,355 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:06:46,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 22:06:46,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2019-10-13 22:06:46,356 INFO L87 Difference]: Start difference. First operand 3103 states and 3942 transitions. Second operand 8 states.