java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 11:49:04,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 11:49:04,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 11:49:04,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 11:49:04,597 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 11:49:04,598 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 11:49:04,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 11:49:04,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 11:49:04,612 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 11:49:04,613 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 11:49:04,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 11:49:04,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 11:49:04,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 11:49:04,616 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 11:49:04,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 11:49:04,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 11:49:04,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 11:49:04,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 11:49:04,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 11:49:04,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 11:49:04,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 11:49:04,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 11:49:04,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 11:49:04,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 11:49:04,629 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 11:49:04,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 11:49:04,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 11:49:04,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 11:49:04,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 11:49:04,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 11:49:04,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 11:49:04,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 11:49:04,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 11:49:04,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 11:49:04,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 11:49:04,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 11:49:04,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 11:49:04,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 11:49:04,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 11:49:04,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 11:49:04,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 11:49:04,638 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 [2019-10-07 11:49:04,652 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 11:49:04,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 11:49:04,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 11:49:04,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 11:49:04,654 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 11:49:04,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 11:49:04,654 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 11:49:04,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 11:49:04,655 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 11:49:04,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 11:49:04,656 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 11:49:04,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 11:49:04,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 11:49:04,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 11:49:04,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 11:49:04,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 11:49:04,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 11:49:04,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 11:49:04,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 11:49:04,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 11:49:04,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 11:49:04,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 11:49:04,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 11:49:04,658 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 [2019-10-07 11:49:04,999 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 11:49:05,020 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 11:49:05,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 11:49:05,025 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 11:49:05,026 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 11:49:05,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2019-10-07 11:49:05,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f02d7e22/a43d42367dd442fd961e47f5f33d23f0/FLAG84783ca6e [2019-10-07 11:49:05,883 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 11:49:05,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2019-10-07 11:49:05,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f02d7e22/a43d42367dd442fd961e47f5f33d23f0/FLAG84783ca6e [2019-10-07 11:49:06,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f02d7e22/a43d42367dd442fd961e47f5f33d23f0 [2019-10-07 11:49:06,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 11:49:06,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 11:49:06,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 11:49:06,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 11:49:06,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 11:49:06,439 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 11:49:06" (1/1) ... [2019-10-07 11:49:06,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d0b3c54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:06, skipping insertion in model container [2019-10-07 11:49:06,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 11:49:06" (1/1) ... [2019-10-07 11:49:06,451 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 11:49:06,600 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 11:49:08,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 11:49:08,574 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 11:49:08,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 11:49:09,493 INFO L192 MainTranslator]: Completed translation [2019-10-07 11:49:09,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09 WrapperNode [2019-10-07 11:49:09,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 11:49:09,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 11:49:09,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 11:49:09,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 11:49:09,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,770 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (1/1) ... [2019-10-07 11:49:09,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 11:49:09,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 11:49:09,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 11:49:09,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 11:49:09,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (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 [2019-10-07 11:49:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 11:49:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 11:49:09,881 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-07 11:49:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2019-10-07 11:49:09,882 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-07 11:49:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-07 11:49:09,883 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-07 11:49:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-07 11:49:09,884 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2019-10-07 11:49:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-07 11:49:09,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-07 11:49:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-07 11:49:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-07 11:49:09,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-07 11:49:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-07 11:49:09,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-07 11:49:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-07 11:49:09,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-07 11:49:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-07 11:49:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-07 11:49:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-07 11:49:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2019-10-07 11:49:09,890 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-07 11:49:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2019-10-07 11:49:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-07 11:49:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2019-10-07 11:49:09,891 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2019-10-07 11:49:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-07 11:49:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-07 11:49:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-07 11:49:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_name [2019-10-07 11:49:09,892 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-07 11:49:09,893 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure pm_runtime_mark_last_busy [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2019-10-07 11:49:09,894 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_control_urb [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_translate_errors [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_find_device_by_minor [2019-10-07 11:49:09,895 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_out_callback [2019-10-07 11:49:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_in_callback [2019-10-07 11:49:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_int_callback [2019-10-07 11:49:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_urbs [2019-10-07 11:49:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure free_urbs [2019-10-07 11:49:09,896 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-10-07 11:49:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_write [2019-10-07 11:49:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_wdm_read_flag [2019-10-07 11:49:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_read [2019-10-07 11:49:09,897 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_flush [2019-10-07 11:49:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_poll [2019-10-07 11:49:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_open [2019-10-07 11:49:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_release [2019-10-07 11:49:09,898 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_ioctl [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_rxwork [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_create [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_manage_power [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_probe [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_cdc_wdm_register [2019-10-07 11:49:09,899 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_disconnect [2019-10-07 11:49:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_suspend [2019-10-07 11:49:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_from_urb_loss [2019-10-07 11:49:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_resume [2019-10-07 11:49:09,900 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_pre_reset [2019-10-07 11:49:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_post_reset [2019-10-07 11:49:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_driver_init [2019-10-07 11:49:09,901 INFO L138 BoogieDeclarations]: Found implementation of procedure wdm_driver_exit [2019-10-07 11:49:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2019-10-07 11:49:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure invoke_work_1 [2019-10-07 11:49:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-07 11:49:09,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_3 [2019-10-07 11:49:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2019-10-07 11:49:09,903 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_1 [2019-10-07 11:49:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2019-10-07 11:49:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure work_init_1 [2019-10-07 11:49:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 11:49:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2019-10-07 11:49:09,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_5 [2019-10-07 11:49:09,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_6 [2019-10-07 11:49:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_work_on_7 [2019-10-07 11:49:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_8 [2019-10-07 11:49:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_queue_delayed_work_on_9 [2019-10-07 11:49:09,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_10 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_11 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_12 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_13 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_14 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_15 [2019-10-07 11:49:09,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_16 [2019-10-07 11:49:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_17 [2019-10-07 11:49:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_18 [2019-10-07 11:49:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_19 [2019-10-07 11:49:09,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_20 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_21 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_22 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_23 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_24 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_25 [2019-10-07 11:49:09,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_26 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_27 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_28 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_29 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_30 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_31 [2019-10-07 11:49:09,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_32 [2019-10-07 11:49:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_33 [2019-10-07 11:49:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_34 [2019-10-07 11:49:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_35 [2019-10-07 11:49:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_36 [2019-10-07 11:49:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_37 [2019-10-07 11:49:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_38 [2019-10-07 11:49:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_39 [2019-10-07 11:49:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_40 [2019-10-07 11:49:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_41 [2019-10-07 11:49:09,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_42 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_43 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_cancel_work_sync_44 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_45 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_46 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_47 [2019-10-07 11:49:09,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_48 [2019-10-07 11:49:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-07 11:49:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-07 11:49:09,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-07 11:49:09,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-07 11:49:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-07 11:49:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-07 11:49:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-07 11:49:09,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-07 11:49:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-07 11:49:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-07 11:49:09,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-07 11:49:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-07 11:49:09,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-07 11:49:09,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-07 11:49:09,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-07 11:49:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-07 11:49:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-07 11:49:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock [2019-10-07 11:49:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_lock [2019-10-07 11:49:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_lock [2019-10-07 11:49:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_lock [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_lock [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mutex_of_device [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_mutex_of_device [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-07 11:49:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_rlock_of_wdm_device [2019-10-07 11:49:09,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_rlock_of_wdm_device [2019-10-07 11:49:09,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_rlock_of_wdm_device [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_rlock_of_wdm_device [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_rlock_of_wdm_device [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_wdm_mutex [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_wdm_mutex [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wdm_mutex [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_wdm_mutex [2019-10-07 11:49:09,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_wdm_mutex [2019-10-07 11:49:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_wdm_mutex [2019-10-07 11:49:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wdm_mutex [2019-10-07 11:49:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_wdm_mutex [2019-10-07 11:49:09,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_wdm_mutex [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_wdm_mutex [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_wdm_mutex [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_wlock_of_wdm_device [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_killable_wlock_of_wdm_device [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_wlock_of_wdm_device [2019-10-07 11:49:09,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_trylock_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_dec_and_mutex_lock_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_is_locked_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_trylock_device_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_lock_device_for_reset_wlock_of_wdm_device [2019-10-07 11:49:09,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_unlock_device_wlock_of_wdm_device [2019-10-07 11:49:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-07 11:49:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_from_user_overflow [2019-10-07 11:49:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-07 11:49:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_dev_dbg [2019-10-07 11:49:09,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_pr_debug [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2019-10-07 11:49:09,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-07 11:49:09,941 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irq [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irq [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-07 11:49:09,942 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-10-07 11:49:09,943 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_trylock [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2019-10-07 11:49:09,944 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_get_interface [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-07 11:49:09,945 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-07 11:49:09,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-07 11:49:09,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-07 11:49:09,947 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2019-10-07 11:49:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 11:49:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-07 11:49:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-07 11:49:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-07 11:49:09,947 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-07 11:49:09,949 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-07 11:49:09,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_pr_debug [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_dev_dbg [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2019-10-07 11:49:09,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 11:49:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2019-10-07 11:49:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-07 11:49:09,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 11:49:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-07 11:49:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-07 11:49:09,956 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_trylock [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_15 [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_11 [2019-10-07 11:49:09,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_12 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_16 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_18 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_19 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_21 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_24 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_25 [2019-10-07 11:49:09,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_28 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_29 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_34 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_35 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_36 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_40 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_41 [2019-10-07 11:49:09,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_45 [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_46 [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-07 11:49:09,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-07 11:49:09,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2019-10-07 11:49:09,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_17 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_20 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_10 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_13 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_14 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_22 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_23 [2019-10-07 11:49:09,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_26 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_27 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_30 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_31 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_32 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_37 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_38 [2019-10-07 11:49:09,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_42 [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_43 [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_i_mutex_of_inode [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_i_mutex_of_inode [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mutex_of_device [2019-10-07 11:49:09,965 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_mutex_of_device [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mutex_of_device [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_rlock_of_wdm_device [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_rlock_of_wdm_device [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_rlock_of_wdm_device [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wdm_mutex [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wdm_mutex [2019-10-07 11:49:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_wlock_of_wdm_device [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_wlock_of_wdm_device [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_wlock_of_wdm_device [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irq [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-07 11:49:09,967 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irq [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-07 11:49:09,968 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2019-10-07 11:49:09,969 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_5 [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_work_on_7 [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_6 [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_queue_delayed_work_on_9 [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2019-10-07 11:49:09,970 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_8 [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_33 [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_39 [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_cancel_work_sync_44 [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2019-10-07 11:49:09,971 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2019-10-07 11:49:09,972 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure invoke_work_1 [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-07 11:49:09,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_3 [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_1 [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure work_init_1 [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_name [2019-10-07 11:49:09,974 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2019-10-07 11:49:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-07 11:49:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_from_user_overflow [2019-10-07 11:49:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-07 11:49:09,976 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2019-10-07 11:49:09,977 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~VOID [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-07 11:49:09,978 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure pm_runtime_mark_last_busy [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_get_interface [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface [2019-10-07 11:49:09,979 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_47 [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_48 [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_control_urb [2019-10-07 11:49:09,980 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_translate_errors [2019-10-07 11:49:09,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_cdc_wdm_register [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_find_device_by_minor [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_out_callback [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_in_callback [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 11:49:09,982 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_int_callback [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure kill_urbs [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure free_urbs [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_write [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure clear_wdm_read_flag [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_read [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_flush [2019-10-07 11:49:09,983 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_poll [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_open [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_release [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_ioctl [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_rxwork [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_create [2019-10-07 11:49:09,984 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_manage_power [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_probe [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_disconnect [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_suspend [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure recover_from_urb_loss [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_resume [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_pre_reset [2019-10-07 11:49:09,985 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_post_reset [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_driver_init [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure wdm_driver_exit [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-07 11:49:09,986 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_i_mutex_of_inode [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_i_mutex_of_inode [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_i_mutex_of_inode [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_i_mutex_of_inode [2019-10-07 11:49:09,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_i_mutex_of_inode [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_i_mutex_of_inode [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_i_mutex_of_inode [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_i_mutex_of_inode [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_i_mutex_of_inode [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_lock [2019-10-07 11:49:09,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_lock [2019-10-07 11:49:09,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_mutex_of_device [2019-10-07 11:49:09,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_mutex_of_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_rlock_of_wdm_device [2019-10-07 11:49:09,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_rlock_of_wdm_device [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_wdm_mutex [2019-10-07 11:49:09,992 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_wdm_mutex [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_wdm_mutex [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_wdm_mutex [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_killable_wlock_of_wdm_device [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_trylock_wlock_of_wdm_device [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_dec_and_mutex_lock_wlock_of_wdm_device [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_is_locked_wlock_of_wdm_device [2019-10-07 11:49:09,993 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_wlock_of_wdm_device [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_trylock_device_wlock_of_wdm_device [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_lock_device_for_reset_wlock_of_wdm_device [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_unlock_device_wlock_of_wdm_device [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-07 11:49:09,994 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 11:49:09,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 11:49:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-07 11:49:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-07 11:49:09,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 11:49:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 11:49:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-07 11:49:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-07 11:49:09,999 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-07 11:49:10,999 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-07 11:49:25,855 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 11:49:25,855 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 11:49:25,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 11:49:25 BoogieIcfgContainer [2019-10-07 11:49:25,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 11:49:25,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 11:49:25,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 11:49:25,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 11:49:25,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 11:49:06" (1/3) ... [2019-10-07 11:49:25,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed37470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 11:49:25, skipping insertion in model container [2019-10-07 11:49:25,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 11:49:09" (2/3) ... [2019-10-07 11:49:25,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ed37470 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 11:49:25, skipping insertion in model container [2019-10-07 11:49:25,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 11:49:25" (3/3) ... [2019-10-07 11:49:25,865 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--usb--class--cdc-wdm.ko-entry_point.cil.out.i [2019-10-07 11:49:25,875 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 11:49:25,885 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 11:49:25,894 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 11:49:25,933 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 11:49:25,933 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 11:49:25,933 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 11:49:25,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 11:49:25,934 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 11:49:25,934 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 11:49:25,934 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 11:49:25,934 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 11:49:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 1541 states. [2019-10-07 11:49:26,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-07 11:49:26,001 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:26,002 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:26,004 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:26,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:26,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1915252360, now seen corresponding path program 1 times [2019-10-07 11:49:26,020 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:26,021 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:26,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:26,021 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:26,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:26,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2019-10-07 11:49:27,069 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:27,070 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:27,071 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:27,077 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:27,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:27,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:27,104 INFO L87 Difference]: Start difference. First operand 1541 states. Second operand 3 states. [2019-10-07 11:49:29,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:29,864 INFO L93 Difference]: Finished difference Result 3323 states and 4533 transitions. [2019-10-07 11:49:29,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:29,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-07 11:49:29,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:29,921 INFO L225 Difference]: With dead ends: 3323 [2019-10-07 11:49:29,921 INFO L226 Difference]: Without dead ends: 2195 [2019-10-07 11:49:29,937 INFO L606 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 [2019-10-07 11:49:29,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2195 states. [2019-10-07 11:49:30,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2195 to 2185. [2019-10-07 11:49:30,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2185 states. [2019-10-07 11:49:30,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2185 states to 2185 states and 2884 transitions. [2019-10-07 11:49:30,219 INFO L78 Accepts]: Start accepts. Automaton has 2185 states and 2884 transitions. Word has length 170 [2019-10-07 11:49:30,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:30,223 INFO L462 AbstractCegarLoop]: Abstraction has 2185 states and 2884 transitions. [2019-10-07 11:49:30,223 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:30,223 INFO L276 IsEmpty]: Start isEmpty. Operand 2185 states and 2884 transitions. [2019-10-07 11:49:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-07 11:49:30,237 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:30,238 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:30,238 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:30,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:30,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1700868557, now seen corresponding path program 1 times [2019-10-07 11:49:30,239 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:30,239 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:30,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:30,239 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:30,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:30,665 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2019-10-07 11:49:30,666 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:30,666 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:30,666 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:30,669 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:30,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:30,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:30,670 INFO L87 Difference]: Start difference. First operand 2185 states and 2884 transitions. Second operand 3 states. [2019-10-07 11:49:31,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:31,064 INFO L93 Difference]: Finished difference Result 5479 states and 7155 transitions. [2019-10-07 11:49:31,065 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:31,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2019-10-07 11:49:31,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:31,091 INFO L225 Difference]: With dead ends: 5479 [2019-10-07 11:49:31,092 INFO L226 Difference]: Without dead ends: 3345 [2019-10-07 11:49:31,102 INFO L606 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 [2019-10-07 11:49:31,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2019-10-07 11:49:31,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 3313. [2019-10-07 11:49:31,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3313 states. [2019-10-07 11:49:31,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3313 states to 3313 states and 4300 transitions. [2019-10-07 11:49:31,297 INFO L78 Accepts]: Start accepts. Automaton has 3313 states and 4300 transitions. Word has length 170 [2019-10-07 11:49:31,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:31,298 INFO L462 AbstractCegarLoop]: Abstraction has 3313 states and 4300 transitions. [2019-10-07 11:49:31,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:31,298 INFO L276 IsEmpty]: Start isEmpty. Operand 3313 states and 4300 transitions. [2019-10-07 11:49:31,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2019-10-07 11:49:31,301 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:31,302 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:31,302 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:31,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:31,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1903521262, now seen corresponding path program 1 times [2019-10-07 11:49:31,303 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:31,303 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:31,303 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:31,303 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:31,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:31,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:31,816 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:31,816 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:31,816 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:31,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:31,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:31,819 INFO L87 Difference]: Start difference. First operand 3313 states and 4300 transitions. Second operand 3 states. [2019-10-07 11:49:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:31,938 INFO L93 Difference]: Finished difference Result 3315 states and 4301 transitions. [2019-10-07 11:49:31,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:31,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 186 [2019-10-07 11:49:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:31,964 INFO L225 Difference]: With dead ends: 3315 [2019-10-07 11:49:31,965 INFO L226 Difference]: Without dead ends: 3312 [2019-10-07 11:49:31,968 INFO L606 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 [2019-10-07 11:49:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3312 states. [2019-10-07 11:49:32,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3312 to 3312. [2019-10-07 11:49:32,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3312 states. [2019-10-07 11:49:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3312 states to 3312 states and 4298 transitions. [2019-10-07 11:49:32,354 INFO L78 Accepts]: Start accepts. Automaton has 3312 states and 4298 transitions. Word has length 186 [2019-10-07 11:49:32,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:32,356 INFO L462 AbstractCegarLoop]: Abstraction has 3312 states and 4298 transitions. [2019-10-07 11:49:32,356 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 3312 states and 4298 transitions. [2019-10-07 11:49:32,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2019-10-07 11:49:32,360 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:32,361 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:32,361 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:32,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:32,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1121323256, now seen corresponding path program 1 times [2019-10-07 11:49:32,362 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:32,362 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:32,363 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:32,363 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:32,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:32,796 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:32,796 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:32,797 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:32,797 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:32,798 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:32,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:32,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:32,798 INFO L87 Difference]: Start difference. First operand 3312 states and 4298 transitions. Second operand 3 states. [2019-10-07 11:49:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:32,909 INFO L93 Difference]: Finished difference Result 3314 states and 4299 transitions. [2019-10-07 11:49:32,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:32,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 187 [2019-10-07 11:49:32,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:32,936 INFO L225 Difference]: With dead ends: 3314 [2019-10-07 11:49:32,936 INFO L226 Difference]: Without dead ends: 3311 [2019-10-07 11:49:32,940 INFO L606 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 [2019-10-07 11:49:32,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3311 states. [2019-10-07 11:49:33,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3311 to 3311. [2019-10-07 11:49:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3311 states. [2019-10-07 11:49:33,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3311 states to 3311 states and 4296 transitions. [2019-10-07 11:49:33,124 INFO L78 Accepts]: Start accepts. Automaton has 3311 states and 4296 transitions. Word has length 187 [2019-10-07 11:49:33,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:33,125 INFO L462 AbstractCegarLoop]: Abstraction has 3311 states and 4296 transitions. [2019-10-07 11:49:33,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:33,125 INFO L276 IsEmpty]: Start isEmpty. Operand 3311 states and 4296 transitions. [2019-10-07 11:49:33,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-07 11:49:33,128 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:33,128 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:33,129 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:33,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:33,129 INFO L82 PathProgramCache]: Analyzing trace with hash 1653963701, now seen corresponding path program 1 times [2019-10-07 11:49:33,129 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:33,130 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:33,130 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:33,130 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:33,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2019-10-07 11:49:33,470 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:33,471 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:33,471 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:33,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:33,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:33,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:33,472 INFO L87 Difference]: Start difference. First operand 3311 states and 4296 transitions. Second operand 3 states. [2019-10-07 11:49:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:34,023 INFO L93 Difference]: Finished difference Result 8202 states and 10659 transitions. [2019-10-07 11:49:34,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:34,024 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2019-10-07 11:49:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:34,058 INFO L225 Difference]: With dead ends: 8202 [2019-10-07 11:49:34,058 INFO L226 Difference]: Without dead ends: 4948 [2019-10-07 11:49:34,075 INFO L606 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 [2019-10-07 11:49:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4948 states. [2019-10-07 11:49:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4948 to 4903. [2019-10-07 11:49:34,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4903 states. [2019-10-07 11:49:34,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 6378 transitions. [2019-10-07 11:49:34,536 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 6378 transitions. Word has length 194 [2019-10-07 11:49:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:34,537 INFO L462 AbstractCegarLoop]: Abstraction has 4903 states and 6378 transitions. [2019-10-07 11:49:34,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:34,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 6378 transitions. [2019-10-07 11:49:34,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2019-10-07 11:49:34,539 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:34,540 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:34,540 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash -402217935, now seen corresponding path program 1 times [2019-10-07 11:49:34,541 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:34,541 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:34,541 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:34,541 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:34,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:35,053 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:35,053 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:35,053 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:35,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:35,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:35,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:35,056 INFO L87 Difference]: Start difference. First operand 4903 states and 6378 transitions. Second operand 3 states. [2019-10-07 11:49:35,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:35,232 INFO L93 Difference]: Finished difference Result 4905 states and 6379 transitions. [2019-10-07 11:49:35,232 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:35,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 188 [2019-10-07 11:49:35,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:35,267 INFO L225 Difference]: With dead ends: 4905 [2019-10-07 11:49:35,267 INFO L226 Difference]: Without dead ends: 4902 [2019-10-07 11:49:35,271 INFO L606 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 [2019-10-07 11:49:35,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2019-10-07 11:49:35,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4902. [2019-10-07 11:49:35,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4902 states. [2019-10-07 11:49:35,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6376 transitions. [2019-10-07 11:49:35,564 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6376 transitions. Word has length 188 [2019-10-07 11:49:35,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:35,565 INFO L462 AbstractCegarLoop]: Abstraction has 4902 states and 6376 transitions. [2019-10-07 11:49:35,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6376 transitions. [2019-10-07 11:49:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2019-10-07 11:49:35,569 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:35,570 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:35,570 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:35,571 INFO L82 PathProgramCache]: Analyzing trace with hash 415215403, now seen corresponding path program 1 times [2019-10-07 11:49:35,571 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:35,571 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:35,571 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:35,571 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:35,901 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:35,901 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:35,901 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:35,901 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:35,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:35,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:35,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:35,903 INFO L87 Difference]: Start difference. First operand 4902 states and 6376 transitions. Second operand 3 states. [2019-10-07 11:49:37,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:37,002 INFO L93 Difference]: Finished difference Result 13881 states and 18008 transitions. [2019-10-07 11:49:37,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:37,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 189 [2019-10-07 11:49:37,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:37,073 INFO L225 Difference]: With dead ends: 13881 [2019-10-07 11:49:37,073 INFO L226 Difference]: Without dead ends: 9036 [2019-10-07 11:49:37,098 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:37,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9036 states. [2019-10-07 11:49:37,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9036 to 9013. [2019-10-07 11:49:37,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9013 states. [2019-10-07 11:49:37,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9013 states to 9013 states and 11657 transitions. [2019-10-07 11:49:37,596 INFO L78 Accepts]: Start accepts. Automaton has 9013 states and 11657 transitions. Word has length 189 [2019-10-07 11:49:37,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:37,598 INFO L462 AbstractCegarLoop]: Abstraction has 9013 states and 11657 transitions. [2019-10-07 11:49:37,598 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:37,598 INFO L276 IsEmpty]: Start isEmpty. Operand 9013 states and 11657 transitions. [2019-10-07 11:49:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2019-10-07 11:49:37,601 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:37,601 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:37,601 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:37,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:37,602 INFO L82 PathProgramCache]: Analyzing trace with hash -14150028, now seen corresponding path program 1 times [2019-10-07 11:49:37,602 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:37,602 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:37,603 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:37,603 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:38,020 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:38,022 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:38,022 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:38,024 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:38,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:38,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:38,025 INFO L87 Difference]: Start difference. First operand 9013 states and 11657 transitions. Second operand 3 states. [2019-10-07 11:49:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:38,581 INFO L93 Difference]: Finished difference Result 9783 states and 12317 transitions. [2019-10-07 11:49:38,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:38,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 190 [2019-10-07 11:49:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:38,641 INFO L225 Difference]: With dead ends: 9783 [2019-10-07 11:49:38,641 INFO L226 Difference]: Without dead ends: 9779 [2019-10-07 11:49:38,646 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:38,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9779 states. [2019-10-07 11:49:39,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9779 to 9773. [2019-10-07 11:49:39,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9773 states. [2019-10-07 11:49:39,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9773 states to 9773 states and 12296 transitions. [2019-10-07 11:49:39,145 INFO L78 Accepts]: Start accepts. Automaton has 9773 states and 12296 transitions. Word has length 190 [2019-10-07 11:49:39,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:39,146 INFO L462 AbstractCegarLoop]: Abstraction has 9773 states and 12296 transitions. [2019-10-07 11:49:39,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:39,146 INFO L276 IsEmpty]: Start isEmpty. Operand 9773 states and 12296 transitions. [2019-10-07 11:49:39,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-10-07 11:49:39,149 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:39,149 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:49:39,149 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:39,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:39,150 INFO L82 PathProgramCache]: Analyzing trace with hash -439571634, now seen corresponding path program 1 times [2019-10-07 11:49:39,150 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:39,150 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:39,151 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:39,151 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:39,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:39,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:39,532 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:39,532 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:39,533 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:39,533 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:39,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:39,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:39,534 INFO L87 Difference]: Start difference. First operand 9773 states and 12296 transitions. Second operand 3 states. [2019-10-07 11:49:40,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:40,414 INFO L93 Difference]: Finished difference Result 27035 states and 34158 transitions. [2019-10-07 11:49:40,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:40,414 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 191 [2019-10-07 11:49:40,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:40,497 INFO L225 Difference]: With dead ends: 27035 [2019-10-07 11:49:40,498 INFO L226 Difference]: Without dead ends: 17301 [2019-10-07 11:49:40,538 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:40,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17301 states. [2019-10-07 11:49:41,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17301 to 17258. [2019-10-07 11:49:41,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17258 states. [2019-10-07 11:49:41,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17258 states to 17258 states and 21816 transitions. [2019-10-07 11:49:41,595 INFO L78 Accepts]: Start accepts. Automaton has 17258 states and 21816 transitions. Word has length 191 [2019-10-07 11:49:41,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:41,595 INFO L462 AbstractCegarLoop]: Abstraction has 17258 states and 21816 transitions. [2019-10-07 11:49:41,595 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:41,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17258 states and 21816 transitions. [2019-10-07 11:49:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-10-07 11:49:41,605 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:41,605 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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] [2019-10-07 11:49:41,606 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:41,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:41,606 INFO L82 PathProgramCache]: Analyzing trace with hash 2107704175, now seen corresponding path program 1 times [2019-10-07 11:49:41,607 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:41,607 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:41,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:41,607 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:41,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:42,149 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-10-07 11:49:42,150 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:42,151 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:42,151 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:42,151 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:42,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:42,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:42,156 INFO L87 Difference]: Start difference. First operand 17258 states and 21816 transitions. Second operand 3 states. [2019-10-07 11:49:45,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:45,336 INFO L93 Difference]: Finished difference Result 42825 states and 54065 transitions. [2019-10-07 11:49:45,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:45,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 242 [2019-10-07 11:49:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:45,472 INFO L225 Difference]: With dead ends: 42825 [2019-10-07 11:49:45,473 INFO L226 Difference]: Without dead ends: 25624 [2019-10-07 11:49:45,560 INFO L606 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 [2019-10-07 11:49:45,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25624 states. [2019-10-07 11:49:46,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25624 to 25554. [2019-10-07 11:49:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25554 states. [2019-10-07 11:49:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25554 states to 25554 states and 32043 transitions. [2019-10-07 11:49:46,892 INFO L78 Accepts]: Start accepts. Automaton has 25554 states and 32043 transitions. Word has length 242 [2019-10-07 11:49:46,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:46,893 INFO L462 AbstractCegarLoop]: Abstraction has 25554 states and 32043 transitions. [2019-10-07 11:49:46,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:46,893 INFO L276 IsEmpty]: Start isEmpty. Operand 25554 states and 32043 transitions. [2019-10-07 11:49:46,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2019-10-07 11:49:46,901 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:46,901 INFO L385 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 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] [2019-10-07 11:49:46,901 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash -505821272, now seen corresponding path program 1 times [2019-10-07 11:49:46,902 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:46,902 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:46,902 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:46,903 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:47,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2019-10-07 11:49:47,304 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:47,305 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:47,305 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:47,306 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:47,307 INFO L87 Difference]: Start difference. First operand 25554 states and 32043 transitions. Second operand 3 states. [2019-10-07 11:49:50,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:50,313 INFO L93 Difference]: Finished difference Result 38653 states and 48453 transitions. [2019-10-07 11:49:50,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:50,313 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 250 [2019-10-07 11:49:50,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:50,359 INFO L225 Difference]: With dead ends: 38653 [2019-10-07 11:49:50,359 INFO L226 Difference]: Without dead ends: 13153 [2019-10-07 11:49:50,404 INFO L606 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 [2019-10-07 11:49:50,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13153 states. [2019-10-07 11:49:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13153 to 12926. [2019-10-07 11:49:50,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12926 states. [2019-10-07 11:49:50,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12926 states to 12926 states and 16234 transitions. [2019-10-07 11:49:50,880 INFO L78 Accepts]: Start accepts. Automaton has 12926 states and 16234 transitions. Word has length 250 [2019-10-07 11:49:50,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:50,881 INFO L462 AbstractCegarLoop]: Abstraction has 12926 states and 16234 transitions. [2019-10-07 11:49:50,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:50,881 INFO L276 IsEmpty]: Start isEmpty. Operand 12926 states and 16234 transitions. [2019-10-07 11:49:50,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-10-07 11:49:50,896 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:50,897 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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] [2019-10-07 11:49:50,897 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:50,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:50,898 INFO L82 PathProgramCache]: Analyzing trace with hash -242223261, now seen corresponding path program 1 times [2019-10-07 11:49:50,898 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:50,898 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:50,898 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:50,898 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:50,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2019-10-07 11:49:51,255 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:51,255 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:51,255 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:51,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:51,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:51,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:51,257 INFO L87 Difference]: Start difference. First operand 12926 states and 16234 transitions. Second operand 3 states. [2019-10-07 11:49:53,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:53,832 INFO L93 Difference]: Finished difference Result 12934 states and 16240 transitions. [2019-10-07 11:49:53,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:53,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 260 [2019-10-07 11:49:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:53,882 INFO L225 Difference]: With dead ends: 12934 [2019-10-07 11:49:53,883 INFO L226 Difference]: Without dead ends: 12931 [2019-10-07 11:49:53,890 INFO L606 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 [2019-10-07 11:49:53,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12931 states. [2019-10-07 11:49:54,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12931 to 12925. [2019-10-07 11:49:54,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12925 states. [2019-10-07 11:49:54,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12925 states to 12925 states and 16220 transitions. [2019-10-07 11:49:54,544 INFO L78 Accepts]: Start accepts. Automaton has 12925 states and 16220 transitions. Word has length 260 [2019-10-07 11:49:54,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:54,545 INFO L462 AbstractCegarLoop]: Abstraction has 12925 states and 16220 transitions. [2019-10-07 11:49:54,545 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:54,545 INFO L276 IsEmpty]: Start isEmpty. Operand 12925 states and 16220 transitions. [2019-10-07 11:49:54,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-10-07 11:49:54,553 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:54,553 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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] [2019-10-07 11:49:54,553 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:54,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:54,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1712382887, now seen corresponding path program 1 times [2019-10-07 11:49:54,554 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:54,554 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:54,554 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:54,554 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:54,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:54,950 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-10-07 11:49:54,951 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:54,951 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:54,951 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-07 11:49:54,952 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-07 11:49:54,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-07 11:49:54,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-07 11:49:54,953 INFO L87 Difference]: Start difference. First operand 12925 states and 16220 transitions. Second operand 3 states. [2019-10-07 11:49:57,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:49:57,655 INFO L93 Difference]: Finished difference Result 30024 states and 37709 transitions. [2019-10-07 11:49:57,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-07 11:49:57,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 269 [2019-10-07 11:49:57,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:49:57,718 INFO L225 Difference]: With dead ends: 30024 [2019-10-07 11:49:57,718 INFO L226 Difference]: Without dead ends: 17260 [2019-10-07 11:49:57,752 INFO L606 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 [2019-10-07 11:49:57,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17260 states. [2019-10-07 11:49:58,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17260 to 17181. [2019-10-07 11:49:58,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17181 states. [2019-10-07 11:49:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17181 states to 17181 states and 21515 transitions. [2019-10-07 11:49:59,542 INFO L78 Accepts]: Start accepts. Automaton has 17181 states and 21515 transitions. Word has length 269 [2019-10-07 11:49:59,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:49:59,542 INFO L462 AbstractCegarLoop]: Abstraction has 17181 states and 21515 transitions. [2019-10-07 11:49:59,542 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-07 11:49:59,542 INFO L276 IsEmpty]: Start isEmpty. Operand 17181 states and 21515 transitions. [2019-10-07 11:49:59,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2019-10-07 11:49:59,547 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:49:59,547 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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] [2019-10-07 11:49:59,547 INFO L410 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:49:59,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:49:59,547 INFO L82 PathProgramCache]: Analyzing trace with hash 286262903, now seen corresponding path program 1 times [2019-10-07 11:49:59,548 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:49:59,548 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:59,548 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:59,548 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:49:59,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:49:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:49:59,923 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2019-10-07 11:49:59,923 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:49:59,923 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:49:59,924 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 11:49:59,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 11:49:59,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 11:49:59,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-07 11:49:59,925 INFO L87 Difference]: Start difference. First operand 17181 states and 21515 transitions. Second operand 8 states. [2019-10-07 11:50:13,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:50:13,658 INFO L93 Difference]: Finished difference Result 41618 states and 52203 transitions. [2019-10-07 11:50:13,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 11:50:13,658 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 286 [2019-10-07 11:50:13,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:50:13,752 INFO L225 Difference]: With dead ends: 41618 [2019-10-07 11:50:13,752 INFO L226 Difference]: Without dead ends: 24598 [2019-10-07 11:50:13,802 INFO L606 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 [2019-10-07 11:50:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24598 states. [2019-10-07 11:50:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24598 to 24412. [2019-10-07 11:50:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24412 states. [2019-10-07 11:50:15,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24412 states to 24412 states and 30530 transitions. [2019-10-07 11:50:15,082 INFO L78 Accepts]: Start accepts. Automaton has 24412 states and 30530 transitions. Word has length 286 [2019-10-07 11:50:15,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:50:15,083 INFO L462 AbstractCegarLoop]: Abstraction has 24412 states and 30530 transitions. [2019-10-07 11:50:15,083 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 11:50:15,088 INFO L276 IsEmpty]: Start isEmpty. Operand 24412 states and 30530 transitions. [2019-10-07 11:50:15,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2019-10-07 11:50:15,096 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:50:15,096 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1] [2019-10-07 11:50:15,096 INFO L410 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:50:15,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:50:15,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1515808071, now seen corresponding path program 1 times [2019-10-07 11:50:15,097 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:50:15,097 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:50:15,098 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:50:15,098 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:50:15,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:50:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:50:15,777 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-10-07 11:50:15,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:50:15,778 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:50:15,778 INFO L95 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 [2019-10-07 11:50:17,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:50:17,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 4401 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-07 11:50:17,283 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:50:17,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-10-07 11:50:17,659 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:50:17,735 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:17,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:17,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2019-10-07 11:50:18,493 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 11:50:18,493 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [11] total 17 [2019-10-07 11:50:18,496 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-07 11:50:18,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-07 11:50:18,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=204, Unknown=0, NotChecked=0, Total=272 [2019-10-07 11:50:18,497 INFO L87 Difference]: Start difference. First operand 24412 states and 30530 transitions. Second operand 12 states. [2019-10-07 11:50:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:50:45,085 INFO L93 Difference]: Finished difference Result 72159 states and 90222 transitions. [2019-10-07 11:50:45,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-10-07 11:50:45,085 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 283 [2019-10-07 11:50:45,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:50:45,501 INFO L225 Difference]: With dead ends: 72159 [2019-10-07 11:50:45,502 INFO L226 Difference]: Without dead ends: 47908 [2019-10-07 11:50:45,619 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 564 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=119, Invalid=387, Unknown=0, NotChecked=0, Total=506 [2019-10-07 11:50:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47908 states. [2019-10-07 11:50:48,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47908 to 44556. [2019-10-07 11:50:48,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44556 states. [2019-10-07 11:50:48,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44556 states to 44556 states and 55679 transitions. [2019-10-07 11:50:48,491 INFO L78 Accepts]: Start accepts. Automaton has 44556 states and 55679 transitions. Word has length 283 [2019-10-07 11:50:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:50:48,491 INFO L462 AbstractCegarLoop]: Abstraction has 44556 states and 55679 transitions. [2019-10-07 11:50:48,492 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-07 11:50:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44556 states and 55679 transitions. [2019-10-07 11:50:48,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-10-07 11:50:48,505 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:50:48,505 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 3, 3, 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] [2019-10-07 11:50:48,719 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:50:48,720 INFO L410 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:50:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:50:48,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1191460862, now seen corresponding path program 1 times [2019-10-07 11:50:48,721 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:50:48,721 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:50:48,721 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:50:48,721 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:50:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:50:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:50:51,072 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 493 trivial. 0 not checked. [2019-10-07 11:50:51,072 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:50:51,073 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:50:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:50:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:50:52,336 INFO L256 TraceCheckSpWp]: Trace formula consists of 4468 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 11:50:52,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:50:52,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2019-10-07 11:50:52,546 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:50:53,375 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:50:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 533 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2019-10-07 11:50:53,594 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 11:50:53,595 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [6] total 17 [2019-10-07 11:50:53,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-07 11:50:53,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-07 11:50:53,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2019-10-07 11:50:53,597 INFO L87 Difference]: Start difference. First operand 44556 states and 55679 transitions. Second operand 13 states. [2019-10-07 11:51:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:51:09,123 INFO L93 Difference]: Finished difference Result 89154 states and 111409 transitions. [2019-10-07 11:51:09,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 11:51:09,124 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 308 [2019-10-07 11:51:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:51:09,326 INFO L225 Difference]: With dead ends: 89154 [2019-10-07 11:51:09,326 INFO L226 Difference]: Without dead ends: 44468 [2019-10-07 11:51:09,442 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 622 GetRequests, 606 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-10-07 11:51:09,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44468 states. [2019-10-07 11:51:11,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44468 to 43733. [2019-10-07 11:51:11,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43733 states. [2019-10-07 11:51:11,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43733 states to 43733 states and 54609 transitions. [2019-10-07 11:51:11,103 INFO L78 Accepts]: Start accepts. Automaton has 43733 states and 54609 transitions. Word has length 308 [2019-10-07 11:51:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:51:11,104 INFO L462 AbstractCegarLoop]: Abstraction has 43733 states and 54609 transitions. [2019-10-07 11:51:11,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-07 11:51:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 43733 states and 54609 transitions. [2019-10-07 11:51:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2019-10-07 11:51:11,118 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:51:11,119 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:51:11,332 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:51:11,332 INFO L410 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:51:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:51:11,333 INFO L82 PathProgramCache]: Analyzing trace with hash 758014988, now seen corresponding path program 1 times [2019-10-07 11:51:11,333 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:51:11,333 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:51:11,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:51:11,334 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:51:11,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:51:11,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:51:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-10-07 11:51:12,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:51:12,166 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:51:12,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:51:13,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:51:13,413 INFO L256 TraceCheckSpWp]: Trace formula consists of 4594 conjuncts, 31 conjunts are in the unsatisfiable core [2019-10-07 11:51:13,425 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:51:13,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:13,714 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2019-10-07 11:51:13,714 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:51:13,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:13,875 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:13,877 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:14,047 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 11:51:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2019-10-07 11:51:14,321 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 11:51:14,321 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [14] total 26 [2019-10-07 11:51:14,322 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-07 11:51:14,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-07 11:51:14,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2019-10-07 11:51:14,323 INFO L87 Difference]: Start difference. First operand 43733 states and 54609 transitions. Second operand 18 states. [2019-10-07 11:51:39,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:51:39,381 INFO L93 Difference]: Finished difference Result 105258 states and 131558 transitions. [2019-10-07 11:51:39,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2019-10-07 11:51:39,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 308 [2019-10-07 11:51:39,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:51:39,642 INFO L225 Difference]: With dead ends: 105258 [2019-10-07 11:51:39,642 INFO L226 Difference]: Without dead ends: 61143 [2019-10-07 11:51:39,760 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 652 GetRequests, 608 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=301, Invalid=1505, Unknown=0, NotChecked=0, Total=1806 [2019-10-07 11:51:39,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61143 states. [2019-10-07 11:51:41,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61143 to 55406. [2019-10-07 11:51:41,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55406 states. [2019-10-07 11:51:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55406 states to 55406 states and 69287 transitions. [2019-10-07 11:51:42,005 INFO L78 Accepts]: Start accepts. Automaton has 55406 states and 69287 transitions. Word has length 308 [2019-10-07 11:51:42,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:51:42,006 INFO L462 AbstractCegarLoop]: Abstraction has 55406 states and 69287 transitions. [2019-10-07 11:51:42,006 INFO L463 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-07 11:51:42,006 INFO L276 IsEmpty]: Start isEmpty. Operand 55406 states and 69287 transitions. [2019-10-07 11:51:42,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2019-10-07 11:51:42,016 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:51:42,016 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:51:42,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:51:42,235 INFO L410 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:51:42,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:51:42,235 INFO L82 PathProgramCache]: Analyzing trace with hash 262857199, now seen corresponding path program 1 times [2019-10-07 11:51:42,235 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:51:42,236 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:51:42,236 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:51:42,236 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:51:42,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:51:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:51:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 522 trivial. 0 not checked. [2019-10-07 11:51:42,918 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:51:42,918 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:51:42,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:51:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:51:44,152 INFO L256 TraceCheckSpWp]: Trace formula consists of 4490 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-07 11:51:44,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:51:44,315 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 433 trivial. 0 not checked. [2019-10-07 11:51:44,780 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:51:44,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,881 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,882 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,949 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:44,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:51:45,168 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2019-10-07 11:51:45,168 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 11:51:45,168 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [16] total 24 [2019-10-07 11:51:45,169 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-07 11:51:45,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-07 11:51:45,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2019-10-07 11:51:45,170 INFO L87 Difference]: Start difference. First operand 55406 states and 69287 transitions. Second operand 10 states. [2019-10-07 11:52:04,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:52:04,687 INFO L93 Difference]: Finished difference Result 137935 states and 177148 transitions. [2019-10-07 11:52:04,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-07 11:52:04,687 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 309 [2019-10-07 11:52:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:52:04,979 INFO L225 Difference]: With dead ends: 137935 [2019-10-07 11:52:04,979 INFO L226 Difference]: Without dead ends: 74650 [2019-10-07 11:52:05,167 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 620 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=158, Invalid=834, Unknown=0, NotChecked=0, Total=992 [2019-10-07 11:52:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74650 states. [2019-10-07 11:52:07,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74650 to 66123. [2019-10-07 11:52:07,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66123 states. [2019-10-07 11:52:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66123 states to 66123 states and 83307 transitions. [2019-10-07 11:52:07,758 INFO L78 Accepts]: Start accepts. Automaton has 66123 states and 83307 transitions. Word has length 309 [2019-10-07 11:52:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:52:07,760 INFO L462 AbstractCegarLoop]: Abstraction has 66123 states and 83307 transitions. [2019-10-07 11:52:07,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-07 11:52:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 66123 states and 83307 transitions. [2019-10-07 11:52:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2019-10-07 11:52:07,776 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:52:07,777 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:52:07,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:52:07,991 INFO L410 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:52:07,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:52:07,991 INFO L82 PathProgramCache]: Analyzing trace with hash 44721515, now seen corresponding path program 1 times [2019-10-07 11:52:07,991 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:52:07,991 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:07,992 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:07,992 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:52:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:52:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2019-10-07 11:52:08,508 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:08,509 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:52:08,509 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-07 11:52:08,514 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-07 11:52:08,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-07 11:52:08,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-10-07 11:52:08,515 INFO L87 Difference]: Start difference. First operand 66123 states and 83307 transitions. Second operand 8 states. [2019-10-07 11:52:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:52:22,270 INFO L93 Difference]: Finished difference Result 128476 states and 161380 transitions. [2019-10-07 11:52:22,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-07 11:52:22,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 352 [2019-10-07 11:52:22,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:52:22,511 INFO L225 Difference]: With dead ends: 128476 [2019-10-07 11:52:22,512 INFO L226 Difference]: Without dead ends: 62514 [2019-10-07 11:52:22,622 INFO L606 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 [2019-10-07 11:52:22,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62514 states. [2019-10-07 11:52:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62514 to 62102. [2019-10-07 11:52:24,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62102 states. [2019-10-07 11:52:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62102 states to 62102 states and 77773 transitions. [2019-10-07 11:52:24,951 INFO L78 Accepts]: Start accepts. Automaton has 62102 states and 77773 transitions. Word has length 352 [2019-10-07 11:52:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:52:24,952 INFO L462 AbstractCegarLoop]: Abstraction has 62102 states and 77773 transitions. [2019-10-07 11:52:24,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-07 11:52:24,952 INFO L276 IsEmpty]: Start isEmpty. Operand 62102 states and 77773 transitions. [2019-10-07 11:52:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2019-10-07 11:52:24,973 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:52:24,973 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:52:24,973 INFO L410 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:52:24,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:52:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash -758724917, now seen corresponding path program 1 times [2019-10-07 11:52:24,974 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:52:24,974 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:24,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:24,974 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:52:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:52:25,570 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2019-10-07 11:52:25,571 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:25,571 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:52:25,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:52:26,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:52:26,972 INFO L256 TraceCheckSpWp]: Trace formula consists of 4737 conjuncts, 22 conjunts are in the unsatisfiable core [2019-10-07 11:52:26,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:52:27,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:27,041 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:27,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:27,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:27,120 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 539 trivial. 0 not checked. [2019-10-07 11:52:27,176 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:52:29,670 WARN L191 SmtUtils]: Spent 2.38 s on a formula simplification that was a NOOP. DAG size: 23 [2019-10-07 11:52:30,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:52:30,754 INFO L134 CoverageAnalysis]: Checked inductivity of 568 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2019-10-07 11:52:30,754 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 11:52:30,755 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [9] total 19 [2019-10-07 11:52:30,755 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-07 11:52:30,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-07 11:52:30,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2019-10-07 11:52:30,756 INFO L87 Difference]: Start difference. First operand 62102 states and 77773 transitions. Second operand 13 states. [2019-10-07 11:52:48,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:52:48,020 INFO L93 Difference]: Finished difference Result 125586 states and 157873 transitions. [2019-10-07 11:52:48,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-07 11:52:48,020 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 363 [2019-10-07 11:52:48,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:52:48,142 INFO L225 Difference]: With dead ends: 125586 [2019-10-07 11:52:48,143 INFO L226 Difference]: Without dead ends: 50838 [2019-10-07 11:52:48,236 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 743 GetRequests, 725 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2019-10-07 11:52:48,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50838 states. [2019-10-07 11:52:49,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50838 to 49656. [2019-10-07 11:52:49,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49656 states. [2019-10-07 11:52:49,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49656 states to 49656 states and 62229 transitions. [2019-10-07 11:52:49,540 INFO L78 Accepts]: Start accepts. Automaton has 49656 states and 62229 transitions. Word has length 363 [2019-10-07 11:52:49,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:52:49,541 INFO L462 AbstractCegarLoop]: Abstraction has 49656 states and 62229 transitions. [2019-10-07 11:52:49,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-07 11:52:49,542 INFO L276 IsEmpty]: Start isEmpty. Operand 49656 states and 62229 transitions. [2019-10-07 11:52:49,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2019-10-07 11:52:49,587 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:52:49,587 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:52:49,801 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:52:49,802 INFO L410 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:52:49,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:52:49,803 INFO L82 PathProgramCache]: Analyzing trace with hash 789139651, now seen corresponding path program 1 times [2019-10-07 11:52:49,803 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:52:49,804 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:49,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:49,804 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:52:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:52:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:52:50,306 INFO L134 CoverageAnalysis]: Checked inductivity of 605 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 574 trivial. 0 not checked. [2019-10-07 11:52:50,306 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:52:50,306 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:52:50,307 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 11:52:50,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 11:52:50,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 11:52:50,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-07 11:52:50,308 INFO L87 Difference]: Start difference. First operand 49656 states and 62229 transitions. Second operand 6 states. [2019-10-07 11:52:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:52:57,262 INFO L93 Difference]: Finished difference Result 112472 states and 141325 transitions. [2019-10-07 11:52:57,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 11:52:57,262 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 412 [2019-10-07 11:52:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:52:57,505 INFO L225 Difference]: With dead ends: 112472 [2019-10-07 11:52:57,505 INFO L226 Difference]: Without dead ends: 62977 [2019-10-07 11:52:57,641 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-07 11:52:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62977 states. [2019-10-07 11:52:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62977 to 59843. [2019-10-07 11:52:59,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59843 states. [2019-10-07 11:52:59,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59843 states to 59843 states and 75058 transitions. [2019-10-07 11:52:59,992 INFO L78 Accepts]: Start accepts. Automaton has 59843 states and 75058 transitions. Word has length 412 [2019-10-07 11:52:59,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:52:59,992 INFO L462 AbstractCegarLoop]: Abstraction has 59843 states and 75058 transitions. [2019-10-07 11:52:59,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 11:52:59,993 INFO L276 IsEmpty]: Start isEmpty. Operand 59843 states and 75058 transitions. [2019-10-07 11:53:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2019-10-07 11:53:00,031 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:53:00,032 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:53:00,032 INFO L410 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:53:00,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:53:00,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1989004182, now seen corresponding path program 1 times [2019-10-07 11:53:00,032 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:53:00,033 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:00,033 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:00,033 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:53:00,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:53:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 615 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2019-10-07 11:53:00,664 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:00,664 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:53:00,664 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-07 11:53:00,665 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-07 11:53:00,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-07 11:53:00,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2019-10-07 11:53:00,666 INFO L87 Difference]: Start difference. First operand 59843 states and 75058 transitions. Second operand 9 states. [2019-10-07 11:53:10,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:53:10,473 INFO L93 Difference]: Finished difference Result 137416 states and 172865 transitions. [2019-10-07 11:53:10,475 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-07 11:53:10,475 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 439 [2019-10-07 11:53:10,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:53:10,673 INFO L225 Difference]: With dead ends: 137416 [2019-10-07 11:53:10,674 INFO L226 Difference]: Without dead ends: 77734 [2019-10-07 11:53:10,752 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2019-10-07 11:53:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77734 states. [2019-10-07 11:53:12,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77734 to 73065. [2019-10-07 11:53:12,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73065 states. [2019-10-07 11:53:13,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73065 states to 73065 states and 91761 transitions. [2019-10-07 11:53:13,023 INFO L78 Accepts]: Start accepts. Automaton has 73065 states and 91761 transitions. Word has length 439 [2019-10-07 11:53:13,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:53:13,024 INFO L462 AbstractCegarLoop]: Abstraction has 73065 states and 91761 transitions. [2019-10-07 11:53:13,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-07 11:53:13,024 INFO L276 IsEmpty]: Start isEmpty. Operand 73065 states and 91761 transitions. [2019-10-07 11:53:13,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2019-10-07 11:53:13,091 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:53:13,091 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:53:13,091 INFO L410 AbstractCegarLoop]: === Iteration 23 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:53:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:53:13,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1428977036, now seen corresponding path program 1 times [2019-10-07 11:53:13,092 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:53:13,092 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:13,092 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:13,093 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:53:13,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:53:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 723 trivial. 0 not checked. [2019-10-07 11:53:13,626 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:13,627 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 11:53:13,627 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 11:53:13,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 11:53:13,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 11:53:13,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 11:53:13,630 INFO L87 Difference]: Start difference. First operand 73065 states and 91761 transitions. Second operand 6 states. [2019-10-07 11:53:15,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:53:15,945 INFO L93 Difference]: Finished difference Result 146244 states and 183855 transitions. [2019-10-07 11:53:15,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 11:53:15,945 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 510 [2019-10-07 11:53:15,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:53:16,109 INFO L225 Difference]: With dead ends: 146244 [2019-10-07 11:53:16,109 INFO L226 Difference]: Without dead ends: 73340 [2019-10-07 11:53:16,193 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-07 11:53:16,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73340 states. [2019-10-07 11:53:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73340 to 73165. [2019-10-07 11:53:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73165 states. [2019-10-07 11:53:18,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73165 states to 73165 states and 91861 transitions. [2019-10-07 11:53:18,115 INFO L78 Accepts]: Start accepts. Automaton has 73165 states and 91861 transitions. Word has length 510 [2019-10-07 11:53:18,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:53:18,116 INFO L462 AbstractCegarLoop]: Abstraction has 73165 states and 91861 transitions. [2019-10-07 11:53:18,116 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 11:53:18,116 INFO L276 IsEmpty]: Start isEmpty. Operand 73165 states and 91861 transitions. [2019-10-07 11:53:18,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2019-10-07 11:53:18,172 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:53:18,172 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:53:18,172 INFO L410 AbstractCegarLoop]: === Iteration 24 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:53:18,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:53:18,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1134702184, now seen corresponding path program 1 times [2019-10-07 11:53:18,173 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:53:18,173 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:18,173 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:18,173 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:53:18,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:53:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:53:28,579 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2019-10-07 11:53:28,579 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:53:28,580 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:53:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:56:36,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:56:36,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 5866 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-07 11:56:36,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 11:56:36,748 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:56:36,914 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 254 proven. 0 refuted. 0 times theorem prover too weak. 479 trivial. 0 not checked. [2019-10-07 11:56:36,915 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 11:56:37,537 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:56:37,569 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 11:56:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 733 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2019-10-07 11:56:37,839 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-07 11:56:37,839 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 11 [2019-10-07 11:56:37,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 11:56:37,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 11:56:37,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-07 11:56:37,841 INFO L87 Difference]: Start difference. First operand 73165 states and 91861 transitions. Second operand 6 states. [2019-10-07 11:56:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 11:56:39,561 INFO L93 Difference]: Finished difference Result 146305 states and 183699 transitions. [2019-10-07 11:56:39,562 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 11:56:39,562 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 514 [2019-10-07 11:56:39,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 11:56:39,794 INFO L225 Difference]: With dead ends: 146305 [2019-10-07 11:56:39,795 INFO L226 Difference]: Without dead ends: 73166 [2019-10-07 11:56:40,278 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 1035 GetRequests, 1021 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2019-10-07 11:56:40,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73166 states. [2019-10-07 11:56:42,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73166 to 73166. [2019-10-07 11:56:42,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73166 states. [2019-10-07 11:56:42,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73166 states to 73166 states and 91862 transitions. [2019-10-07 11:56:42,314 INFO L78 Accepts]: Start accepts. Automaton has 73166 states and 91862 transitions. Word has length 514 [2019-10-07 11:56:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 11:56:42,314 INFO L462 AbstractCegarLoop]: Abstraction has 73166 states and 91862 transitions. [2019-10-07 11:56:42,314 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 11:56:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 73166 states and 91862 transitions. [2019-10-07 11:56:42,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2019-10-07 11:56:42,377 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 11:56:42,377 INFO L385 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 11:56:42,578 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 11:56:42,578 INFO L410 AbstractCegarLoop]: === Iteration 25 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 11:56:42,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 11:56:42,579 INFO L82 PathProgramCache]: Analyzing trace with hash 972230122, now seen corresponding path program 1 times [2019-10-07 11:56:42,579 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 11:56:42,580 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:56:42,580 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:56:42,580 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 11:56:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 11:56:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 11:56:49,814 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2019-10-07 11:56:49,815 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 11:56:49,815 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 11:56:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:01:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:01:54,365 INFO L256 TraceCheckSpWp]: Trace formula consists of 5920 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-07 12:01:54,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:01:54,661 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 206 proven. 1 refuted. 0 times theorem prover too weak. 643 trivial. 0 not checked. [2019-10-07 12:01:54,661 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:01:55,501 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:01:55,539 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:01:55,540 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:01:55,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:01:55,695 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:01:57,780 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 38 [2019-10-07 12:01:57,986 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2019-10-07 12:01:57,986 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 12:01:58,038 INFO L162 IcfgInterpreter]: Started Sifa with 309 locations of interest [2019-10-07 12:01:58,038 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 12:01:58,045 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 12:01:58,052 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 12:01:58,052 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 12:02:08,181 WARN L191 SmtUtils]: Spent 1.18 s on a formula simplification that was a NOOP. DAG size: 2255