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-f4eb214f-m [2019-10-13 22:08:22,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:08:22,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:08:22,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:08:22,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:08:22,112 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:08:22,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:08:22,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:08:22,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:08:22,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:08:22,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:08:22,119 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:08:22,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:08:22,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:08:22,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:08:22,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:08:22,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:08:22,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:08:22,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:08:22,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:08:22,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:08:22,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:08:22,134 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:08:22,135 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:08:22,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:08:22,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:08:22,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:08:22,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:08:22,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:08:22,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:08:22,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:08:22,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:08:22,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:08:22,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:08:22,143 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:08:22,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:08:22,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:08:22,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:08:22,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:08:22,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:08:22,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:08:22,146 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:08:22,160 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:08:22,160 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:08:22,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:08:22,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:08:22,162 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:08:22,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:08:22,163 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:08:22,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:08:22,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:08:22,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:08:22,163 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:08:22,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:08:22,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:08:22,164 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:08:22,164 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:08:22,164 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:08:22,165 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:08:22,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:08:22,165 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:08:22,165 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:08:22,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:08:22,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:08:22,168 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:08:22,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:08:22,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:08:22,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:08:22,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:08:22,169 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:08:22,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:08:22,441 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:08:22,454 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:08:22,458 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:08:22,459 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:08:22,459 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:08:22,460 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-13 22:08:22,529 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b185d4c/5ae89f88323349e8a8e9b35204ff5231/FLAG4d5cb26b5 [2019-10-13 22:08:23,255 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:08:23,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-13 22:08:23,292 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b185d4c/5ae89f88323349e8a8e9b35204ff5231/FLAG4d5cb26b5 [2019-10-13 22:08:23,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/52b185d4c/5ae89f88323349e8a8e9b35204ff5231 [2019-10-13 22:08:23,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:08:23,813 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:08:23,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:08:23,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:08:23,818 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:08:23,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:23" (1/1) ... [2019-10-13 22:08:23,821 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f33ca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:23, skipping insertion in model container [2019-10-13 22:08:23,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:08:23" (1/1) ... [2019-10-13 22:08:23,828 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:08:23,944 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:08:25,607 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:08:25,648 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:08:25,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:08:26,168 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:08:26,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26 WrapperNode [2019-10-13 22:08:26,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:08:26,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:08:26,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:08:26,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:08:26,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... [2019-10-13 22:08:26,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:08:26,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:08:26,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:08:26,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:08:26,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:08:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:08:26,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:08:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 22:08:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 22:08:26,573 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:08:26,575 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2019-10-13 22:08:26,576 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_schedule [2019-10-13 22:08:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 22:08:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:08:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:08:26,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:08:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:08:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:08:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:08:26,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:08:26,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:08:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:08:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:08:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:08:26,587 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_schedule_event [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_down [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_bchannel_up [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure tiocm_to_gigaset [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_modem_ctrl [2019-10-13 22:08:26,588 INFO L138 BoogieDeclarations]: Found implementation of procedure set_value [2019-10-13 22:08:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_baud_rate [2019-10-13 22:08:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_set_line_ctrl [2019-10-13 22:08:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_init_bchannel [2019-10-13 22:08:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_close_bchannel [2019-10-13 22:08:26,589 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_modem_fill [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_read_int_callback [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_bulk_callback [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure send_cb [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_cmd [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_write_room [2019-10-13 22:08:26,590 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_chars_in_buffer [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_brkchars [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freebcshw [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initbcshw [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_reinitbcshw [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecshw [2019-10-13 22:08:26,591 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcshw [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure write_modem [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_probe [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_disconnect [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_suspend [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_resume [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_pre_reset [2019-10-13 22:08:26,592 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gigaset_init [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gigaset_exit [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_gigaset_ops_1 [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-10-13 22:08:26,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2019-10-13 22:08:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2019-10-13 22:08:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-10-13 22:08:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2019-10-13 22:08:26,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_dev_7 [2019-10-13 22:08:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_8 [2019-10-13 22:08:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_9 [2019-10-13 22:08:26,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_10 [2019-10-13 22:08:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_11 [2019-10-13 22:08:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_12 [2019-10-13 22:08:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_13 [2019-10-13 22:08:26,596 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_14 [2019-10-13 22:08:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_16 [2019-10-13 22:08:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_17 [2019-10-13 22:08:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_19 [2019-10-13 22:08:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_20 [2019-10-13 22:08:26,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_dev_21 [2019-10-13 22:08:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2019-10-13 22:08:26,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_25 [2019-10-13 22:08:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_26 [2019-10-13 22:08:26,599 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2019-10-13 22:08:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-10-13 22:08:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-10-13 22:08:26,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-10-13 22:08:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-10-13 22:08:26,601 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-10-13 22:08:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-10-13 22:08:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-10-13 22:08:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-10-13 22:08:26,602 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-10-13 22:08:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-10-13 22:08:26,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-10-13 22:08:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-10-13 22:08:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-10-13 22:08:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-10-13 22:08:26,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-10-13 22:08:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:08:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __tasklet_schedule [2019-10-13 22:08:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-10-13 22:08:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2019-10-13 22:08:26,605 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_notice [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_warn [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_add_event [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_blockdriver [2019-10-13 22:08:26,606 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_dbg_buffer [2019-10-13 22:08:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_fill_inbuf [2019-10-13 22:08:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freecs [2019-10-13 22:08:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_freedriver [2019-10-13 22:08:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initcs [2019-10-13 22:08:26,607 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_initdriver [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_input [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_m10x_send_skb [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_shutdown [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_skb_sent [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_start [2019-10-13 22:08:26,608 INFO L138 BoogieDeclarations]: Found implementation of procedure gigaset_stop [2019-10-13 22:08:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:08:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-10-13 22:08:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_1 [2019-10-13 22:08:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:08:26,609 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2019-10-13 22:08:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 22:08:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_init [2019-10-13 22:08:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2019-10-13 22:08:26,610 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-13 22:08:26,611 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 22:08:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 22:08:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 22:08:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:08:26,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:08:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 22:08:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:08:26,613 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:08:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:08:26,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:08:26,615 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:08:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 22:08:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 22:08:26,619 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:08:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2019-10-13 22:08:26,620 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_irqrestore [2019-10-13 22:08:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:08:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2019-10-13 22:08:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure __tasklet_schedule [2019-10-13 22:08:26,621 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_schedule [2019-10-13 22:08:26,622 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2019-10-13 22:08:26,628 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_init [2019-10-13 22:08:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 22:08:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure dev_warn [2019-10-13 22:08:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure dev_notice [2019-10-13 22:08:26,630 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-10-13 22:08:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_17 [2019-10-13 22:08:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_8 [2019-10-13 22:08:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-10-13 22:08:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_dev_7 [2019-10-13 22:08:26,631 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_16 [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_dev_21 [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_25 [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_26 [2019-10-13 22:08:26,632 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2019-10-13 22:08:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_11 [2019-10-13 22:08:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_9 [2019-10-13 22:08:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_10 [2019-10-13 22:08:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_13 [2019-10-13 22:08:26,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_14 [2019-10-13 22:08:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_19 [2019-10-13 22:08:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_20 [2019-10-13 22:08:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2019-10-13 22:08:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-10-13 22:08:26,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2019-10-13 22:08:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_12 [2019-10-13 22:08:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2019-10-13 22:08:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 22:08:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-13 22:08:26,635 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-10-13 22:08:26,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-10-13 22:08:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-10-13 22:08:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-10-13 22:08:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-10-13 22:08:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-10-13 22:08:26,637 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:08:26,638 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:08:26,639 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_gigaset_ops_1 [2019-10-13 22:08:26,640 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_dbg_buffer [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_send_skb [2019-10-13 22:08:26,641 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_m10x_input [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_skb_sent [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initdriver [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freedriver [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_blockdriver [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcs [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecs [2019-10-13 22:08:26,642 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_start [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_stop [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_shutdown [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_add_event [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_schedule_event [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_down [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_bchannel_up [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_fill_inbuf [2019-10-13 22:08:26,643 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_probe [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_disconnect [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_suspend [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_resume [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_pre_reset [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure tiocm_to_gigaset [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_modem_ctrl [2019-10-13 22:08:26,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure set_value [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_baud_rate [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_set_line_ctrl [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_init_bchannel [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_close_bchannel [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure write_modem [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure send_cb [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_modem_fill [2019-10-13 22:08:26,645 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_read_int_callback [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_bulk_callback [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_cmd [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_write_room [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_chars_in_buffer [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_brkchars [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:08:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freebcshw [2019-10-13 22:08:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initbcshw [2019-10-13 22:08:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_reinitbcshw [2019-10-13 22:08:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_freecshw [2019-10-13 22:08:26,648 INFO L130 BoogieDeclarations]: Found specification of procedure gigaset_initcshw [2019-10-13 22:08:26,651 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gigaset_init [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gigaset_exit [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_1 [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:08:26,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 22:08:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2019-10-13 22:08:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-10-13 22:08:26,653 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-10-13 22:08:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-10-13 22:08:26,655 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:08:26,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:08:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:08:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:08:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:08:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:08:26,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:08:27,898 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:08:30,921 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2019-10-13 22:08:36,888 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:08:36,889 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 22:08:36,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:36 BoogieIcfgContainer [2019-10-13 22:08:36,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:08:36,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:08:36,892 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:08:36,895 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:08:36,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:08:23" (1/3) ... [2019-10-13 22:08:36,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52343a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:36, skipping insertion in model container [2019-10-13 22:08:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:08:26" (2/3) ... [2019-10-13 22:08:36,896 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52343a85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:08:36, skipping insertion in model container [2019-10-13 22:08:36,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:08:36" (3/3) ... [2019-10-13 22:08:36,898 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--gigaset--usb_gigaset.ko-entry_point.cil.out.i [2019-10-13 22:08:36,907 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:08:36,917 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:08:36,928 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:08:36,959 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:08:36,959 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:08:36,959 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:08:36,960 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:08:36,960 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:08:36,960 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:08:36,960 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:08:36,960 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:08:36,995 INFO L276 IsEmpty]: Start isEmpty. Operand 908 states. [2019-10-13 22:08:37,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-13 22:08:37,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:37,015 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] [2019-10-13 22:08:37,017 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:37,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:37,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2026677764, now seen corresponding path program 1 times [2019-10-13 22:08:37,032 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:37,032 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309997374] [2019-10-13 22:08:37,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:37,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:37,033 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:08:37,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309997374] [2019-10-13 22:08:37,851 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:37,851 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:37,852 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652481812] [2019-10-13 22:08:37,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:37,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:37,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:37,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:37,876 INFO L87 Difference]: Start difference. First operand 908 states. Second operand 3 states. [2019-10-13 22:08:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:38,124 INFO L93 Difference]: Finished difference Result 1476 states and 1944 transitions. [2019-10-13 22:08:38,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:38,128 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2019-10-13 22:08:38,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:38,197 INFO L225 Difference]: With dead ends: 1476 [2019-10-13 22:08:38,197 INFO L226 Difference]: Without dead ends: 1430 [2019-10-13 22:08:38,205 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 [2019-10-13 22:08:38,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2019-10-13 22:08:38,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1419. [2019-10-13 22:08:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1419 states. [2019-10-13 22:08:38,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1419 states to 1419 states and 1853 transitions. [2019-10-13 22:08:38,417 INFO L78 Accepts]: Start accepts. Automaton has 1419 states and 1853 transitions. Word has length 72 [2019-10-13 22:08:38,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:38,418 INFO L462 AbstractCegarLoop]: Abstraction has 1419 states and 1853 transitions. [2019-10-13 22:08:38,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:38,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1419 states and 1853 transitions. [2019-10-13 22:08:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2019-10-13 22:08:38,426 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:38,426 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] [2019-10-13 22:08:38,427 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:38,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:38,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1596871129, now seen corresponding path program 1 times [2019-10-13 22:08:38,436 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:38,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322955249] [2019-10-13 22:08:38,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:38,436 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:38,436 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:38,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:08:38,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322955249] [2019-10-13 22:08:38,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:38,676 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:38,676 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447212557] [2019-10-13 22:08:38,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:38,678 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:38,678 INFO L87 Difference]: Start difference. First operand 1419 states and 1853 transitions. Second operand 3 states. [2019-10-13 22:08:38,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:38,851 INFO L93 Difference]: Finished difference Result 3451 states and 4516 transitions. [2019-10-13 22:08:38,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:38,852 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2019-10-13 22:08:38,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:38,867 INFO L225 Difference]: With dead ends: 3451 [2019-10-13 22:08:38,867 INFO L226 Difference]: Without dead ends: 2055 [2019-10-13 22:08:38,875 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 [2019-10-13 22:08:38,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2055 states. [2019-10-13 22:08:38,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2055 to 2046. [2019-10-13 22:08:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2046 states. [2019-10-13 22:08:38,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 2676 transitions. [2019-10-13 22:08:38,991 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 2676 transitions. Word has length 73 [2019-10-13 22:08:38,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:38,991 INFO L462 AbstractCegarLoop]: Abstraction has 2046 states and 2676 transitions. [2019-10-13 22:08:38,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:38,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 2676 transitions. [2019-10-13 22:08:38,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2019-10-13 22:08:38,996 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:38,996 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] [2019-10-13 22:08:38,997 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:38,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:38,997 INFO L82 PathProgramCache]: Analyzing trace with hash -2037225313, now seen corresponding path program 1 times [2019-10-13 22:08:38,997 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:38,997 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207103411] [2019-10-13 22:08:38,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:38,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:38,998 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:39,178 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:08:39,178 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207103411] [2019-10-13 22:08:39,179 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:39,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:39,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31847527] [2019-10-13 22:08:39,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:39,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:39,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:39,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:39,180 INFO L87 Difference]: Start difference. First operand 2046 states and 2676 transitions. Second operand 3 states. [2019-10-13 22:08:39,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:39,286 INFO L93 Difference]: Finished difference Result 2669 states and 3506 transitions. [2019-10-13 22:08:39,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:39,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2019-10-13 22:08:39,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:39,304 INFO L225 Difference]: With dead ends: 2669 [2019-10-13 22:08:39,304 INFO L226 Difference]: Without dead ends: 2666 [2019-10-13 22:08:39,306 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 [2019-10-13 22:08:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2019-10-13 22:08:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2658. [2019-10-13 22:08:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2019-10-13 22:08:39,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3494 transitions. [2019-10-13 22:08:39,455 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3494 transitions. Word has length 74 [2019-10-13 22:08:39,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:39,456 INFO L462 AbstractCegarLoop]: Abstraction has 2658 states and 3494 transitions. [2019-10-13 22:08:39,456 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:39,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3494 transitions. [2019-10-13 22:08:39,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 22:08:39,459 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:39,460 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] [2019-10-13 22:08:39,460 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1269906844, now seen corresponding path program 1 times [2019-10-13 22:08:39,461 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:39,461 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430885633] [2019-10-13 22:08:39,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:39,461 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:39,461 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:39,755 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:08:39,756 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430885633] [2019-10-13 22:08:39,756 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:39,756 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:39,756 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513211683] [2019-10-13 22:08:39,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:39,757 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:39,759 INFO L87 Difference]: Start difference. First operand 2658 states and 3494 transitions. Second operand 3 states. [2019-10-13 22:08:39,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:39,847 INFO L93 Difference]: Finished difference Result 2660 states and 3495 transitions. [2019-10-13 22:08:39,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:39,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-13 22:08:39,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:39,864 INFO L225 Difference]: With dead ends: 2660 [2019-10-13 22:08:39,865 INFO L226 Difference]: Without dead ends: 2657 [2019-10-13 22:08:39,867 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2657 states. [2019-10-13 22:08:40,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2657 to 2657. [2019-10-13 22:08:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2657 states. [2019-10-13 22:08:40,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2657 states to 2657 states and 3492 transitions. [2019-10-13 22:08:40,020 INFO L78 Accepts]: Start accepts. Automaton has 2657 states and 3492 transitions. Word has length 75 [2019-10-13 22:08:40,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:40,021 INFO L462 AbstractCegarLoop]: Abstraction has 2657 states and 3492 transitions. [2019-10-13 22:08:40,021 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:40,021 INFO L276 IsEmpty]: Start isEmpty. Operand 2657 states and 3492 transitions. [2019-10-13 22:08:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2019-10-13 22:08:40,024 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:40,024 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] [2019-10-13 22:08:40,024 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:40,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:40,025 INFO L82 PathProgramCache]: Analyzing trace with hash 711793474, now seen corresponding path program 1 times [2019-10-13 22:08:40,025 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:40,025 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411822553] [2019-10-13 22:08:40,025 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:40,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:40,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:40,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:08:40,188 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411822553] [2019-10-13 22:08:40,188 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:40,188 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:40,188 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65344126] [2019-10-13 22:08:40,189 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:40,189 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:40,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:40,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:40,189 INFO L87 Difference]: Start difference. First operand 2657 states and 3492 transitions. Second operand 3 states. [2019-10-13 22:08:40,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:40,280 INFO L93 Difference]: Finished difference Result 2659 states and 3493 transitions. [2019-10-13 22:08:40,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:40,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2019-10-13 22:08:40,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:40,298 INFO L225 Difference]: With dead ends: 2659 [2019-10-13 22:08:40,298 INFO L226 Difference]: Without dead ends: 2627 [2019-10-13 22:08:40,300 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:40,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2627 states. [2019-10-13 22:08:40,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2627 to 2627. [2019-10-13 22:08:40,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2627 states. [2019-10-13 22:08:40,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2627 states to 2627 states and 3457 transitions. [2019-10-13 22:08:40,436 INFO L78 Accepts]: Start accepts. Automaton has 2627 states and 3457 transitions. Word has length 76 [2019-10-13 22:08:40,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:40,437 INFO L462 AbstractCegarLoop]: Abstraction has 2627 states and 3457 transitions. [2019-10-13 22:08:40,437 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:40,437 INFO L276 IsEmpty]: Start isEmpty. Operand 2627 states and 3457 transitions. [2019-10-13 22:08:40,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 22:08:40,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:40,443 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] [2019-10-13 22:08:40,443 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:40,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:40,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1231498152, now seen corresponding path program 1 times [2019-10-13 22:08:40,444 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:40,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056743282] [2019-10-13 22:08:40,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:40,444 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:40,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:40,604 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 22:08:40,604 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056743282] [2019-10-13 22:08:40,605 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:40,605 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:40,605 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696162604] [2019-10-13 22:08:40,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:40,606 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:40,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:40,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:40,607 INFO L87 Difference]: Start difference. First operand 2627 states and 3457 transitions. Second operand 3 states. [2019-10-13 22:08:40,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:40,926 INFO L93 Difference]: Finished difference Result 6743 states and 8865 transitions. [2019-10-13 22:08:40,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:40,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-10-13 22:08:40,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:40,951 INFO L225 Difference]: With dead ends: 6743 [2019-10-13 22:08:40,951 INFO L226 Difference]: Without dead ends: 4139 [2019-10-13 22:08:40,962 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:40,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2019-10-13 22:08:41,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4047. [2019-10-13 22:08:41,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4047 states. [2019-10-13 22:08:41,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5327 transitions. [2019-10-13 22:08:41,171 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5327 transitions. Word has length 154 [2019-10-13 22:08:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:41,172 INFO L462 AbstractCegarLoop]: Abstraction has 4047 states and 5327 transitions. [2019-10-13 22:08:41,172 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:41,172 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5327 transitions. [2019-10-13 22:08:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 22:08:41,184 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:41,185 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] [2019-10-13 22:08:41,185 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:41,185 INFO L82 PathProgramCache]: Analyzing trace with hash -386892738, now seen corresponding path program 1 times [2019-10-13 22:08:41,186 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:41,186 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692328878] [2019-10-13 22:08:41,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:41,186 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:41,186 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-10-13 22:08:41,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692328878] [2019-10-13 22:08:41,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469693777] [2019-10-13 22:08:41,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:42,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 2685 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-13 22:08:42,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:08:42,413 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-13 22:08:42,413 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:08:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-13 22:08:42,694 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:08:42,694 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 6 [2019-10-13 22:08:42,694 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032871441] [2019-10-13 22:08:42,695 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:42,695 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:42,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:42,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:08:42,696 INFO L87 Difference]: Start difference. First operand 4047 states and 5327 transitions. Second operand 3 states. [2019-10-13 22:08:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:43,101 INFO L93 Difference]: Finished difference Result 9795 states and 12895 transitions. [2019-10-13 22:08:43,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:43,101 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 22:08:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:43,137 INFO L225 Difference]: With dead ends: 9795 [2019-10-13 22:08:43,138 INFO L226 Difference]: Without dead ends: 5771 [2019-10-13 22:08:43,156 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 [2019-10-13 22:08:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5771 states. [2019-10-13 22:08:43,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5771 to 5671. [2019-10-13 22:08:43,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5671 states. [2019-10-13 22:08:43,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 7461 transitions. [2019-10-13 22:08:43,504 INFO L78 Accepts]: Start accepts. Automaton has 5671 states and 7461 transitions. Word has length 196 [2019-10-13 22:08:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:43,504 INFO L462 AbstractCegarLoop]: Abstraction has 5671 states and 7461 transitions. [2019-10-13 22:08:43,504 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:43,504 INFO L276 IsEmpty]: Start isEmpty. Operand 5671 states and 7461 transitions. [2019-10-13 22:08:43,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-10-13 22:08:43,520 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:43,520 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] [2019-10-13 22:08:43,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:43,733 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:43,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:43,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1021883817, now seen corresponding path program 1 times [2019-10-13 22:08:43,734 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:43,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572065210] [2019-10-13 22:08:43,734 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:43,735 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:43,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:43,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:44,049 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2019-10-13 22:08:44,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572065210] [2019-10-13 22:08:44,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85115818] [2019-10-13 22:08:44,050 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 [2019-10-13 22:08:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:44,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 2893 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:08:44,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:08:45,004 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-10-13 22:08:45,005 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:08:45,227 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2019-10-13 22:08:45,228 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:08:45,228 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6 [2019-10-13 22:08:45,228 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694624243] [2019-10-13 22:08:45,230 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:45,230 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:45,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:45,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-13 22:08:45,231 INFO L87 Difference]: Start difference. First operand 5671 states and 7461 transitions. Second operand 3 states. [2019-10-13 22:08:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:46,578 INFO L93 Difference]: Finished difference Result 11345 states and 14929 transitions. [2019-10-13 22:08:46,578 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:46,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 229 [2019-10-13 22:08:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:46,614 INFO L225 Difference]: With dead ends: 11345 [2019-10-13 22:08:46,615 INFO L226 Difference]: Without dead ends: 5694 [2019-10-13 22:08:46,757 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 [2019-10-13 22:08:46,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2019-10-13 22:08:46,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5674. [2019-10-13 22:08:46,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5674 states. [2019-10-13 22:08:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5674 states to 5674 states and 7461 transitions. [2019-10-13 22:08:46,996 INFO L78 Accepts]: Start accepts. Automaton has 5674 states and 7461 transitions. Word has length 229 [2019-10-13 22:08:46,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:46,998 INFO L462 AbstractCegarLoop]: Abstraction has 5674 states and 7461 transitions. [2019-10-13 22:08:46,998 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:46,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5674 states and 7461 transitions. [2019-10-13 22:08:47,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2019-10-13 22:08:47,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:47,016 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] [2019-10-13 22:08:47,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:47,232 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:47,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:47,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1815854815, now seen corresponding path program 1 times [2019-10-13 22:08:47,232 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:47,232 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891913055] [2019-10-13 22:08:47,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:47,233 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:47,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2019-10-13 22:08:47,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891913055] [2019-10-13 22:08:47,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:08:47,485 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:08:47,485 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431986608] [2019-10-13 22:08:47,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:08:47,486 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:47,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:08:47,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:47,486 INFO L87 Difference]: Start difference. First operand 5674 states and 7461 transitions. Second operand 3 states. [2019-10-13 22:08:49,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:49,761 INFO L93 Difference]: Finished difference Result 11271 states and 14856 transitions. [2019-10-13 22:08:49,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:08:49,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2019-10-13 22:08:49,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:49,795 INFO L225 Difference]: With dead ends: 11271 [2019-10-13 22:08:49,795 INFO L226 Difference]: Without dead ends: 5274 [2019-10-13 22:08:49,816 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:08:49,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5274 states. [2019-10-13 22:08:50,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5274 to 5274. [2019-10-13 22:08:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5274 states. [2019-10-13 22:08:50,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5274 states to 5274 states and 6946 transitions. [2019-10-13 22:08:50,071 INFO L78 Accepts]: Start accepts. Automaton has 5274 states and 6946 transitions. Word has length 244 [2019-10-13 22:08:50,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:50,072 INFO L462 AbstractCegarLoop]: Abstraction has 5274 states and 6946 transitions. [2019-10-13 22:08:50,072 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:08:50,072 INFO L276 IsEmpty]: Start isEmpty. Operand 5274 states and 6946 transitions. [2019-10-13 22:08:50,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2019-10-13 22:08:50,084 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:50,085 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] [2019-10-13 22:08:50,085 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:50,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:50,086 INFO L82 PathProgramCache]: Analyzing trace with hash -548648853, now seen corresponding path program 1 times [2019-10-13 22:08:50,086 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:50,086 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111790485] [2019-10-13 22:08:50,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:50,086 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:50,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-10-13 22:08:50,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111790485] [2019-10-13 22:08:50,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921568452] [2019-10-13 22:08:50,523 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 [2019-10-13 22:08:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:51,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 2941 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:08:51,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:08:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 22:08:51,469 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:08:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-13 22:08:51,720 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 22:08:51,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [7] total 11 [2019-10-13 22:08:51,720 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348903417] [2019-10-13 22:08:51,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 22:08:51,721 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:08:51,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 22:08:51,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-10-13 22:08:51,722 INFO L87 Difference]: Start difference. First operand 5274 states and 6946 transitions. Second operand 6 states. [2019-10-13 22:08:51,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:08:51,913 INFO L93 Difference]: Finished difference Result 10522 states and 13862 transitions. [2019-10-13 22:08:51,913 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 22:08:51,913 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 246 [2019-10-13 22:08:51,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:08:51,936 INFO L225 Difference]: With dead ends: 10522 [2019-10-13 22:08:51,936 INFO L226 Difference]: Without dead ends: 5276 [2019-10-13 22:08:51,954 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 [2019-10-13 22:08:51,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5276 states. [2019-10-13 22:08:52,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5276 to 5276. [2019-10-13 22:08:52,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5276 states. [2019-10-13 22:08:52,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 6948 transitions. [2019-10-13 22:08:52,243 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 6948 transitions. Word has length 246 [2019-10-13 22:08:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:08:52,244 INFO L462 AbstractCegarLoop]: Abstraction has 5276 states and 6948 transitions. [2019-10-13 22:08:52,244 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-13 22:08:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 6948 transitions. [2019-10-13 22:08:52,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-10-13 22:08:52,256 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:08:52,256 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:08:52,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:52,466 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:08:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:08:52,467 INFO L82 PathProgramCache]: Analyzing trace with hash -2113830805, now seen corresponding path program 1 times [2019-10-13 22:08:52,467 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:08:52,467 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030821795] [2019-10-13 22:08:52,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:52,467 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:08:52,467 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:08:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2019-10-13 22:08:52,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030821795] [2019-10-13 22:08:52,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724910682] [2019-10-13 22:08:52,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:08:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:08:53,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 2953 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-13 22:08:53,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:08:53,782 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 60 proven. 3 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-10-13 22:08:53,783 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:08:54,221 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2019-10-13 22:08:54,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [576747533] [2019-10-13 22:08:54,254 INFO L162 IcfgInterpreter]: Started Sifa with 199 locations of interest [2019-10-13 22:08:54,254 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:08:54,261 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:08:54,269 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:08:54,270 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs