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-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 02:10:48,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 02:10:48,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 02:10:48,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 02:10:48,843 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 02:10:48,845 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 02:10:48,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 02:10:48,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 02:10:48,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 02:10:48,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 02:10:48,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 02:10:48,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 02:10:48,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 02:10:48,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 02:10:48,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 02:10:48,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 02:10:48,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 02:10:48,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 02:10:48,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 02:10:48,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 02:10:48,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 02:10:48,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 02:10:48,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 02:10:48,866 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 02:10:48,869 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 02:10:48,869 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 02:10:48,869 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 02:10:48,870 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 02:10:48,870 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 02:10:48,871 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 02:10:48,872 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 02:10:48,873 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 02:10:48,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 02:10:48,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 02:10:48,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 02:10:48,875 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 02:10:48,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 02:10:48,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 02:10:48,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 02:10:48,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 02:10:48,878 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 02:10:48,879 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 [2019-10-15 02:10:48,898 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 02:10:48,899 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 02:10:48,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 02:10:48,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 02:10:48,902 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 02:10:48,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 02:10:48,903 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 02:10:48,903 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 02:10:48,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 02:10:48,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 02:10:48,904 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 02:10:48,904 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 02:10:48,905 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 02:10:48,905 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 02:10:48,905 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 02:10:48,905 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 02:10:48,906 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 02:10:48,906 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 02:10:48,906 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 02:10:48,906 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 02:10:48,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 02:10:48,907 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 02:10:48,907 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 02:10:48,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 02:10:48,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 02:10:48,908 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 02:10:48,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 02:10:48,908 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 02:10:48,909 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 [2019-10-15 02:10:49,240 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 02:10:49,261 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 02:10:49,265 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 02:10:49,266 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 02:10:49,266 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 02:10:49,267 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-15 02:10:49,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63004bb51/237815871b104eaeb05f2c7a11ee0fa8/FLAG484fadc14 [2019-10-15 02:10:50,229 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 02:10:50,230 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-15 02:10:50,282 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63004bb51/237815871b104eaeb05f2c7a11ee0fa8/FLAG484fadc14 [2019-10-15 02:10:50,704 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/63004bb51/237815871b104eaeb05f2c7a11ee0fa8 [2019-10-15 02:10:50,715 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 02:10:50,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 02:10:50,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 02:10:50,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 02:10:50,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 02:10:50,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:10:50" (1/1) ... [2019-10-15 02:10:50,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1dcc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:50, skipping insertion in model container [2019-10-15 02:10:50,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:10:50" (1/1) ... [2019-10-15 02:10:50,734 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 02:10:50,855 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 02:10:52,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:10:52,716 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 02:10:53,230 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 02:10:53,467 INFO L192 MainTranslator]: Completed translation [2019-10-15 02:10:53,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53 WrapperNode [2019-10-15 02:10:53,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 02:10:53,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 02:10:53,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 02:10:53,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 02:10:53,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,563 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (1/1) ... [2019-10-15 02:10:53,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 02:10:53,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 02:10:53,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 02:10:53,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 02:10:53,755 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (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 [2019-10-15 02:10:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 02:10:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 02:10:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 02:10:53,836 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 02:10:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 02:10:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-15 02:10:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-15 02:10:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-15 02:10:53,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 02:10:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 02:10:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 02:10:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 02:10:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 02:10:53,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 02:10:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 02:10:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 02:10:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 02:10:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 02:10:53,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 02:10:53,841 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-15 02:10:53,843 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2019-10-15 02:10:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2019-10-15 02:10:53,844 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_up [2019-10-15 02:10:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocm_to_gigaset [2019-10-15 02:10:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2019-10-15 02:10:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure set_value [2019-10-15 02:10:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2019-10-15 02:10:53,845 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2019-10-15 02:10:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2019-10-15 02:10:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2019-10-15 02:10:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_modem_fill [2019-10-15 02:10:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2019-10-15 02:10:53,846 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_bulk_callback [2019-10-15 02:10:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure send_cb [2019-10-15 02:10:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_cmd [2019-10-15 02:10:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2019-10-15 02:10:53,847 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2019-10-15 02:10:53,848 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure write_modem [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_probe [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_pre_reset [2019-10-15 02:10:53,849 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gigaset_init [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gigaset_exit [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gigaset_ops_1 [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-15 02:10:53,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2019-10-15 02:10:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2019-10-15 02:10:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-10-15 02:10:53,851 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2019-10-15 02:10:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_dev_7 [2019-10-15 02:10:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2019-10-15 02:10:53,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_9 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_10 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_11 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_13 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_14 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_16 [2019-10-15 02:10:53,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_17 [2019-10-15 02:10:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_19 [2019-10-15 02:10:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_20 [2019-10-15 02:10:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_21 [2019-10-15 02:10:53,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2019-10-15 02:10:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_25 [2019-10-15 02:10:53,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_26 [2019-10-15 02:10:53,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2019-10-15 02:10:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-15 02:10:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-15 02:10:53,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-15 02:10:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-15 02:10:53,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-15 02:10:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-15 02:10:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-15 02:10:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-15 02:10:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-15 02:10:53,859 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-15 02:10:53,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 02:10:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_notice [2019-10-15 02:10:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_blockdriver [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_fill_inbuf [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2019-10-15 02:10:53,863 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2019-10-15 02:10:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcs [2019-10-15 02:10:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initdriver [2019-10-15 02:10:53,864 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_input [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_send_skb [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_shutdown [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_skb_sent [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_start [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_stop [2019-10-15 02:10:53,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 02:10:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-10-15 02:10:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2019-10-15 02:10:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 02:10:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2019-10-15 02:10:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 02:10:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-15 02:10:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-15 02:10:53,867 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-15 02:10:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-15 02:10:53,868 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-15 02:10:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-15 02:10:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 02:10:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 02:10:53,869 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 02:10:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 02:10:53,870 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 02:10:53,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 02:10:53,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 02:10:53,875 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 02:10:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 02:10:53,879 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-15 02:10:53,880 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-15 02:10:53,881 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-15 02:10:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-15 02:10:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-15 02:10:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-10-15 02:10:53,888 INFO L130 BoogieDeclarations]: Found specification of procedure dev_notice [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_17 [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_dev_7 [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_16 [2019-10-15 02:10:53,889 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_21 [2019-10-15 02:10:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-15 02:10:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_25 [2019-10-15 02:10:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-15 02:10:53,890 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_26 [2019-10-15 02:10:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2019-10-15 02:10:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_11 [2019-10-15 02:10:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_9 [2019-10-15 02:10:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_10 [2019-10-15 02:10:53,891 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_13 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_14 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_19 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_20 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2019-10-15 02:10:53,892 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-15 02:10:53,893 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-15 02:10:53,894 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 02:10:53,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 02:10:53,896 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 02:10:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 02:10:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 02:10:53,897 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 02:10:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 02:10:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-15 02:10:53,898 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gigaset_ops_1 [2019-10-15 02:10:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2019-10-15 02:10:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 02:10:53,899 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_send_skb [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_input [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_skb_sent [2019-10-15 02:10:53,900 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initdriver [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_blockdriver [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcs [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_start [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_stop [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_shutdown [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2019-10-15 02:10:53,901 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_up [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_fill_inbuf [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_probe [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2019-10-15 02:10:53,902 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_pre_reset [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure tiocm_to_gigaset [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure set_value [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2019-10-15 02:10:53,903 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write_modem [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure send_cb [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_modem_fill [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_bulk_callback [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_cmd [2019-10-15 02:10:53,904 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2019-10-15 02:10:53,905 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2019-10-15 02:10:53,906 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2019-10-15 02:10:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gigaset_init [2019-10-15 02:10:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gigaset_exit [2019-10-15 02:10:53,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2019-10-15 02:10:53,911 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-15 02:10:53,912 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-15 02:10:53,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 02:10:53,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 02:10:53,915 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 02:10:55,306 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 02:10:58,716 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2019-10-15 02:11:04,121 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 02:11:04,122 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 02:11:04,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:11:04 BoogieIcfgContainer [2019-10-15 02:11:04,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 02:11:04,125 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 02:11:04,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 02:11:04,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 02:11:04,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:10:50" (1/3) ... [2019-10-15 02:11:04,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f78dbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:11:04, skipping insertion in model container [2019-10-15 02:11:04,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:10:53" (2/3) ... [2019-10-15 02:11:04,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f78dbfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:11:04, skipping insertion in model container [2019-10-15 02:11:04,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:11:04" (3/3) ... [2019-10-15 02:11:04,133 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-15 02:11:04,143 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 02:11:04,157 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 02:11:04,169 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 02:11:04,218 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 02:11:04,219 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 02:11:04,219 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 02:11:04,219 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 02:11:04,219 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 02:11:04,219 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 02:11:04,219 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 02:11:04,219 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 02:11:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states. [2019-10-15 02:11:04,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-15 02:11:04,286 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:04,287 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:04,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:04,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:04,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2026677764, now seen corresponding path program 1 times [2019-10-15 02:11:04,302 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:04,302 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486285095] [2019-10-15 02:11:04,302 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:04,303 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:04,303 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:11:05,163 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486285095] [2019-10-15 02:11:05,164 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:05,164 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:05,165 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62444912] [2019-10-15 02:11:05,173 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:05,174 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:05,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:05,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:05,193 INFO L87 Difference]: Start difference. First operand 908 states. Second operand 3 states. [2019-10-15 02:11:05,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:05,437 INFO L93 Difference]: Finished difference Result 1476 states and 1944 transitions. [2019-10-15 02:11:05,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:05,439 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-15 02:11:05,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:05,483 INFO L225 Difference]: With dead ends: 1476 [2019-10-15 02:11:05,484 INFO L226 Difference]: Without dead ends: 1430 [2019-10-15 02:11:05,490 INFO L600 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 [2019-10-15 02:11:05,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2019-10-15 02:11:05,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1419. [2019-10-15 02:11:05,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2019-10-15 02:11:05,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1853 transitions. [2019-10-15 02:11:05,724 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1853 transitions. Word has length 72 [2019-10-15 02:11:05,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:05,725 INFO L462 AbstractCegarLoop]: Abstraction has 1419 states and 1853 transitions. [2019-10-15 02:11:05,725 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:05,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1853 transitions. [2019-10-15 02:11:05,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-15 02:11:05,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:05,744 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:05,744 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:05,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:05,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1596871129, now seen corresponding path program 1 times [2019-10-15 02:11:05,745 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:05,745 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453625976] [2019-10-15 02:11:05,745 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:05,746 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:05,746 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:05,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:11:06,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453625976] [2019-10-15 02:11:06,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:06,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:06,189 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858093062] [2019-10-15 02:11:06,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:06,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:06,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:06,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:06,192 INFO L87 Difference]: Start difference. First operand 1419 states and 1853 transitions. Second operand 3 states. [2019-10-15 02:11:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:06,329 INFO L93 Difference]: Finished difference Result 3451 states and 4516 transitions. [2019-10-15 02:11:06,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:06,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2019-10-15 02:11:06,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:06,345 INFO L225 Difference]: With dead ends: 3451 [2019-10-15 02:11:06,346 INFO L226 Difference]: Without dead ends: 2055 [2019-10-15 02:11:06,355 INFO L600 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 [2019-10-15 02:11:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2019-10-15 02:11:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2046. [2019-10-15 02:11:06,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2019-10-15 02:11:06,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2676 transitions. [2019-10-15 02:11:06,468 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2676 transitions. Word has length 73 [2019-10-15 02:11:06,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:06,468 INFO L462 AbstractCegarLoop]: Abstraction has 2046 states and 2676 transitions. [2019-10-15 02:11:06,468 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:06,469 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2676 transitions. [2019-10-15 02:11:06,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-15 02:11:06,472 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:06,472 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:06,472 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:06,473 INFO L82 PathProgramCache]: Analyzing trace with hash -2037225313, now seen corresponding path program 1 times [2019-10-15 02:11:06,473 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:06,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302238857] [2019-10-15 02:11:06,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:06,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:06,474 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:06,668 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:11:06,668 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302238857] [2019-10-15 02:11:06,669 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:06,669 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:06,669 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806982938] [2019-10-15 02:11:06,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:06,670 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:06,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:06,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:06,671 INFO L87 Difference]: Start difference. First operand 2046 states and 2676 transitions. Second operand 3 states. [2019-10-15 02:11:06,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:06,804 INFO L93 Difference]: Finished difference Result 2669 states and 3506 transitions. [2019-10-15 02:11:06,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:06,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-10-15 02:11:06,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:06,829 INFO L225 Difference]: With dead ends: 2669 [2019-10-15 02:11:06,829 INFO L226 Difference]: Without dead ends: 2666 [2019-10-15 02:11:06,833 INFO L600 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 [2019-10-15 02:11:06,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2019-10-15 02:11:06,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2658. [2019-10-15 02:11:06,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2019-10-15 02:11:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3494 transitions. [2019-10-15 02:11:06,987 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3494 transitions. Word has length 74 [2019-10-15 02:11:06,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:06,988 INFO L462 AbstractCegarLoop]: Abstraction has 2658 states and 3494 transitions. [2019-10-15 02:11:06,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:06,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3494 transitions. [2019-10-15 02:11:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 02:11:06,994 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:06,994 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:06,994 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:06,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1269906844, now seen corresponding path program 1 times [2019-10-15 02:11:06,995 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:06,995 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692471503] [2019-10-15 02:11:06,995 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:06,996 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:06,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:07,256 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:11:07,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692471503] [2019-10-15 02:11:07,257 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:07,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:07,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539854950] [2019-10-15 02:11:07,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:07,260 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:07,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:07,262 INFO L87 Difference]: Start difference. First operand 2658 states and 3494 transitions. Second operand 3 states. [2019-10-15 02:11:07,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:07,350 INFO L93 Difference]: Finished difference Result 2660 states and 3495 transitions. [2019-10-15 02:11:07,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:07,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-15 02:11:07,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:07,378 INFO L225 Difference]: With dead ends: 2660 [2019-10-15 02:11:07,378 INFO L226 Difference]: Without dead ends: 2657 [2019-10-15 02:11:07,380 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2019-10-15 02:11:07,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2657. [2019-10-15 02:11:07,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2657 states. [2019-10-15 02:11:07,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3492 transitions. [2019-10-15 02:11:07,551 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3492 transitions. Word has length 75 [2019-10-15 02:11:07,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:07,551 INFO L462 AbstractCegarLoop]: Abstraction has 2657 states and 3492 transitions. [2019-10-15 02:11:07,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:07,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3492 transitions. [2019-10-15 02:11:07,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-15 02:11:07,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:07,555 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:07,556 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:07,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:07,556 INFO L82 PathProgramCache]: Analyzing trace with hash 711793474, now seen corresponding path program 1 times [2019-10-15 02:11:07,556 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:07,557 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590353181] [2019-10-15 02:11:07,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:07,557 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:07,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 02:11:07,751 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590353181] [2019-10-15 02:11:07,751 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:07,752 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:07,752 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948030776] [2019-10-15 02:11:07,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:07,753 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:07,754 INFO L87 Difference]: Start difference. First operand 2657 states and 3492 transitions. Second operand 3 states. [2019-10-15 02:11:07,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:07,977 INFO L93 Difference]: Finished difference Result 2659 states and 3493 transitions. [2019-10-15 02:11:07,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:07,978 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-15 02:11:07,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:07,999 INFO L225 Difference]: With dead ends: 2659 [2019-10-15 02:11:07,999 INFO L226 Difference]: Without dead ends: 2627 [2019-10-15 02:11:08,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2019-10-15 02:11:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2627. [2019-10-15 02:11:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2019-10-15 02:11:08,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3457 transitions. [2019-10-15 02:11:08,177 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3457 transitions. Word has length 76 [2019-10-15 02:11:08,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:08,178 INFO L462 AbstractCegarLoop]: Abstraction has 2627 states and 3457 transitions. [2019-10-15 02:11:08,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:08,178 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3457 transitions. [2019-10-15 02:11:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-15 02:11:08,186 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:08,187 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-10-15 02:11:08,187 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1231498152, now seen corresponding path program 1 times [2019-10-15 02:11:08,188 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:08,188 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706064817] [2019-10-15 02:11:08,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:08,188 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:08,188 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:08,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:08,457 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 02:11:08,458 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706064817] [2019-10-15 02:11:08,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:08,458 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:08,459 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842384554] [2019-10-15 02:11:08,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:08,459 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:08,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:08,460 INFO L87 Difference]: Start difference. First operand 2627 states and 3457 transitions. Second operand 3 states. [2019-10-15 02:11:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:08,755 INFO L93 Difference]: Finished difference Result 6743 states and 8865 transitions. [2019-10-15 02:11:08,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:08,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-10-15 02:11:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:08,785 INFO L225 Difference]: With dead ends: 6743 [2019-10-15 02:11:08,786 INFO L226 Difference]: Without dead ends: 4139 [2019-10-15 02:11:08,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:08,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2019-10-15 02:11:09,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4047. [2019-10-15 02:11:09,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2019-10-15 02:11:09,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5327 transitions. [2019-10-15 02:11:09,026 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5327 transitions. Word has length 154 [2019-10-15 02:11:09,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:09,027 INFO L462 AbstractCegarLoop]: Abstraction has 4047 states and 5327 transitions. [2019-10-15 02:11:09,027 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:09,028 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5327 transitions. [2019-10-15 02:11:09,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-15 02:11:09,038 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:09,038 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2019-10-15 02:11:09,039 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:09,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:09,039 INFO L82 PathProgramCache]: Analyzing trace with hash -386892738, now seen corresponding path program 1 times [2019-10-15 02:11:09,039 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:09,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277572336] [2019-10-15 02:11:09,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:09,040 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:09,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:09,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:09,264 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-15 02:11:09,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277572336] [2019-10-15 02:11:09,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708489108] [2019-10-15 02:11:09,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:11:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:10,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 02:11:10,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:11:10,183 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-15 02:11:10,184 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:11:10,519 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 02:11:10,520 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 02:11:10,520 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 6 [2019-10-15 02:11:10,520 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321033406] [2019-10-15 02:11:10,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:10,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:10,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:11:10,523 INFO L87 Difference]: Start difference. First operand 4047 states and 5327 transitions. Second operand 3 states. [2019-10-15 02:11:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:11,174 INFO L93 Difference]: Finished difference Result 9795 states and 12895 transitions. [2019-10-15 02:11:11,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:11,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-15 02:11:11,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:11,226 INFO L225 Difference]: With dead ends: 9795 [2019-10-15 02:11:11,227 INFO L226 Difference]: Without dead ends: 5771 [2019-10-15 02:11:11,249 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 391 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:11:11,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2019-10-15 02:11:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5671. [2019-10-15 02:11:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2019-10-15 02:11:11,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7461 transitions. [2019-10-15 02:11:11,854 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7461 transitions. Word has length 196 [2019-10-15 02:11:11,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:11,854 INFO L462 AbstractCegarLoop]: Abstraction has 5671 states and 7461 transitions. [2019-10-15 02:11:11,854 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:11,855 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7461 transitions. [2019-10-15 02:11:11,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-15 02:11:11,880 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:11,881 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2019-10-15 02:11:12,637 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:11:12,638 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:12,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1021883817, now seen corresponding path program 1 times [2019-10-15 02:11:12,639 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:12,639 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430831158] [2019-10-15 02:11:12,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:12,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:12,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:12,888 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-15 02:11:12,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430831158] [2019-10-15 02:11:12,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1483646238] [2019-10-15 02:11:12,889 INFO L94 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 [2019-10-15 02:11:13,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:13,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:11:13,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:11:13,723 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-15 02:11:13,724 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:11:13,959 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-15 02:11:13,960 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:11:13,960 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2019-10-15 02:11:13,960 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145188053] [2019-10-15 02:11:13,961 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:13,962 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:13,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:13,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:11:13,962 INFO L87 Difference]: Start difference. First operand 5671 states and 7461 transitions. Second operand 3 states. [2019-10-15 02:11:15,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:15,746 INFO L93 Difference]: Finished difference Result 11345 states and 14929 transitions. [2019-10-15 02:11:15,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:15,746 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2019-10-15 02:11:15,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:15,792 INFO L225 Difference]: With dead ends: 11345 [2019-10-15 02:11:15,792 INFO L226 Difference]: Without dead ends: 5694 [2019-10-15 02:11:15,810 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 458 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-15 02:11:15,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2019-10-15 02:11:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5674. [2019-10-15 02:11:16,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5674 states. [2019-10-15 02:11:16,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 7461 transitions. [2019-10-15 02:11:16,078 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 7461 transitions. Word has length 229 [2019-10-15 02:11:16,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:16,079 INFO L462 AbstractCegarLoop]: Abstraction has 5674 states and 7461 transitions. [2019-10-15 02:11:16,079 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 7461 transitions. [2019-10-15 02:11:16,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-15 02:11:16,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:16,100 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 02:11:16,311 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 02:11:16,312 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:16,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:16,312 INFO L82 PathProgramCache]: Analyzing trace with hash 1815854815, now seen corresponding path program 1 times [2019-10-15 02:11:16,313 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:16,313 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114544241] [2019-10-15 02:11:16,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:16,313 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:16,313 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:16,655 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-10-15 02:11:16,655 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114544241] [2019-10-15 02:11:16,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 02:11:16,656 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 02:11:16,656 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49178802] [2019-10-15 02:11:16,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 02:11:16,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:16,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 02:11:16,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:16,658 INFO L87 Difference]: Start difference. First operand 5674 states and 7461 transitions. Second operand 3 states. [2019-10-15 02:11:18,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:18,369 INFO L93 Difference]: Finished difference Result 11271 states and 14856 transitions. [2019-10-15 02:11:18,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 02:11:18,370 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2019-10-15 02:11:18,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:18,396 INFO L225 Difference]: With dead ends: 11271 [2019-10-15 02:11:18,396 INFO L226 Difference]: Without dead ends: 5274 [2019-10-15 02:11:18,416 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 02:11:18,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2019-10-15 02:11:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5274. [2019-10-15 02:11:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5274 states. [2019-10-15 02:11:18,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 6946 transitions. [2019-10-15 02:11:18,668 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 6946 transitions. Word has length 244 [2019-10-15 02:11:18,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 02:11:18,669 INFO L462 AbstractCegarLoop]: Abstraction has 5274 states and 6946 transitions. [2019-10-15 02:11:18,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 02:11:18,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 6946 transitions. [2019-10-15 02:11:18,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-15 02:11:18,680 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 02:11:18,681 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 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] [2019-10-15 02:11:18,681 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 02:11:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 02:11:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash -548648853, now seen corresponding path program 1 times [2019-10-15 02:11:18,682 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 02:11:18,682 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424973226] [2019-10-15 02:11:18,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:18,682 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 02:11:18,683 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 02:11:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:19,121 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-15 02:11:19,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424973226] [2019-10-15 02:11:19,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975405377] [2019-10-15 02:11:19,122 INFO L94 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 [2019-10-15 02:11:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 02:11:20,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 02:11:20,146 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 02:11:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-15 02:11:20,242 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 02:11:20,528 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-15 02:11:20,528 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 02:11:20,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 11 [2019-10-15 02:11:20,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377848940] [2019-10-15 02:11:20,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 02:11:20,530 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 02:11:20,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 02:11:20,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-15 02:11:20,531 INFO L87 Difference]: Start difference. First operand 5274 states and 6946 transitions. Second operand 6 states. [2019-10-15 02:11:20,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 02:11:20,748 INFO L93 Difference]: Finished difference Result 10522 states and 13862 transitions. [2019-10-15 02:11:20,748 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 02:11:20,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2019-10-15 02:11:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 02:11:20,774 INFO L225 Difference]: With dead ends: 10522 [2019-10-15 02:11:20,774 INFO L226 Difference]: Without dead ends: 5276 [2019-10-15 02:11:20,793 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 502 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-10-15 02:11:20,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states.