/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:49:10,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:49:10,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:49:10,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:49:10,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:49:10,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:49:10,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:49:10,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:49:10,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:49:10,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:49:10,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:49:10,710 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:49:10,710 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:49:10,711 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:49:10,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:49:10,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:49:10,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:49:10,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:49:10,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:49:10,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:49:10,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:49:10,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:49:10,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:49:10,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:49:10,739 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:49:10,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:49:10,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:49:10,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:49:10,742 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:49:10,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:49:10,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:49:10,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:49:10,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:49:10,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:49:10,753 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:49:10,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:49:10,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:49:10,754 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:49:10,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:49:10,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:49:10,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:49:10,759 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 [2019-11-07 02:49:10,779 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:49:10,780 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:49:10,782 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:49:10,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:49:10,782 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:49:10,783 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:49:10,783 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:49:10,783 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:49:10,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:49:10,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:49:10,784 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:49:10,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:49:10,785 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:49:10,786 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:49:10,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:49:10,786 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:49:10,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:49:10,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:49:10,787 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:49:10,787 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:49:10,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:49:10,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:49:10,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:49:10,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:49:10,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:49:10,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:49:10,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:49:10,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:49:10,788 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 [2019-11-07 02:49:11,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:49:11,102 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:49:11,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:49:11,108 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:49:11,109 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:49:11,110 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-11-07 02:49:11,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89b2b879/87207f7d65434ac6bc42e3ec8668276f/FLAG535dd5755 [2019-11-07 02:49:11,985 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:49:11,985 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-11-07 02:49:12,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89b2b879/87207f7d65434ac6bc42e3ec8668276f/FLAG535dd5755 [2019-11-07 02:49:12,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b89b2b879/87207f7d65434ac6bc42e3ec8668276f [2019-11-07 02:49:12,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:49:12,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:49:12,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:49:12,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:49:12,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:49:12,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:12" (1/1) ... [2019-11-07 02:49:12,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5df597fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:12, skipping insertion in model container [2019-11-07 02:49:12,071 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:49:12" (1/1) ... [2019-11-07 02:49:12,080 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:49:12,206 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:49:13,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:49:13,675 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:49:13,937 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:49:14,024 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:49:14,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14 WrapperNode [2019-11-07 02:49:14,026 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:49:14,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:49:14,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:49:14,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:49:14,042 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,042 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,095 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,096 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (1/1) ... [2019-11-07 02:49:14,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:49:14,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:49:14,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:49:14,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:49:14,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (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 [2019-11-07 02:49:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:49:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:49:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 02:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 02:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 02:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 02:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:49:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 02:49:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:49:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:49:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-11-07 02:49:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-07 02:49:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2019-11-07 02:49:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_bind [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_unbind [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_init [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_driver_exit [2019-11-07 02:49:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-07 02:49:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-07 02:49:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-07 02:49:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-11-07 02:49:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_14 [2019-11-07 02:49:14,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_15 [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:49:14,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-07 02:49:14,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-11-07 02:49:14,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-11-07 02:49:14,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2019-11-07 02:49:14,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-07 02:49:14,353 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-07 02:49:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-07 02:49:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_trim [2019-11-07 02:49:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2019-11-07 02:49:14,354 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_string [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_get_endpoints [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-11-07 02:49:14,355 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2019-11-07 02:49:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-11-07 02:49:14,356 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:49:14,357 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:49:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 02:49:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 02:49:14,358 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 02:49:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:49:14,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:49:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 02:49:14,360 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2019-11-07 02:49:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:49:14,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:49:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:49:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:49:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 02:49:14,362 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-11-07 02:49:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2019-11-07 02:49:14,363 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-07 02:49:14,364 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure skb_trim [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-07 02:49:14,365 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 02:49:14,366 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 02:49:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 02:49:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 02:49:14,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-11-07 02:49:14,368 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2019-11-07 02:49:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-11-07 02:49:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-07 02:49:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_14 [2019-11-07 02:49:14,370 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-07 02:49:14,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_15 [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure usb_string [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 02:49:14,372 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-11-07 02:49:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-11-07 02:49:14,373 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-11-07 02:49:14,374 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-11-07 02:49:14,377 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_get_endpoints [2019-11-07 02:49:14,377 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2019-11-07 02:49:14,377 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2019-11-07 02:49:14,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:49:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 02:49:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:49:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:49:14,378 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_bind [2019-11-07 02:49:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_unbind [2019-11-07 02:49:14,379 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2019-11-07 02:49:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2019-11-07 02:49:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_init [2019-11-07 02:49:14,385 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_driver_exit [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-07 02:49:14,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:49:14,387 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 02:49:14,388 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:49:14,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 02:49:14,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 02:49:15,187 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 02:49:18,326 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:49:18,326 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 02:49:18,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:18 BoogieIcfgContainer [2019-11-07 02:49:18,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:49:18,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:49:18,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:49:18,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:49:18,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:49:12" (1/3) ... [2019-11-07 02:49:18,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecbfc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:18, skipping insertion in model container [2019-11-07 02:49:18,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:49:14" (2/3) ... [2019-11-07 02:49:18,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ecbfc6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:49:18, skipping insertion in model container [2019-11-07 02:49:18,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:49:18" (3/3) ... [2019-11-07 02:49:18,339 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2019-11-07 02:49:18,349 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:49:18,358 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:49:18,366 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:49:18,400 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:49:18,400 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:49:18,400 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:49:18,400 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:49:18,400 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:49:18,400 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:49:18,400 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:49:18,401 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:49:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states. [2019-11-07 02:49:18,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-11-07 02:49:18,462 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:18,463 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:49:18,465 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:18,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:18,471 INFO L82 PathProgramCache]: Analyzing trace with hash 708915959, now seen corresponding path program 1 times [2019-11-07 02:49:18,482 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:18,482 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499030017] [2019-11-07 02:49:18,482 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:18,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:19,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 02:49:19,074 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499030017] [2019-11-07 02:49:19,075 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:19,075 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:19,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950535531] [2019-11-07 02:49:19,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:19,081 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:19,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:19,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:19,099 INFO L87 Difference]: Start difference. First operand 361 states. Second operand 3 states. [2019-11-07 02:49:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:19,584 INFO L93 Difference]: Finished difference Result 968 states and 1280 transitions. [2019-11-07 02:49:19,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:19,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-11-07 02:49:19,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:19,609 INFO L225 Difference]: With dead ends: 968 [2019-11-07 02:49:19,609 INFO L226 Difference]: Without dead ends: 617 [2019-11-07 02:49:19,618 INFO L630 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 [2019-11-07 02:49:19,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-11-07 02:49:19,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 617. [2019-11-07 02:49:19,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2019-11-07 02:49:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 801 transitions. [2019-11-07 02:49:19,825 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 801 transitions. Word has length 53 [2019-11-07 02:49:19,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:19,827 INFO L462 AbstractCegarLoop]: Abstraction has 617 states and 801 transitions. [2019-11-07 02:49:19,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:19,827 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 801 transitions. [2019-11-07 02:49:19,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2019-11-07 02:49:19,832 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:19,832 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-07 02:49:19,832 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:19,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:19,833 INFO L82 PathProgramCache]: Analyzing trace with hash 135869433, now seen corresponding path program 1 times [2019-11-07 02:49:19,833 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:19,833 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179314994] [2019-11-07 02:49:19,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:19,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:20,092 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-11-07 02:49:20,093 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179314994] [2019-11-07 02:49:20,093 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:20,093 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 02:49:20,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144144904] [2019-11-07 02:49:20,095 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 02:49:20,095 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:20,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 02:49:20,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 02:49:20,096 INFO L87 Difference]: Start difference. First operand 617 states and 801 transitions. Second operand 6 states. [2019-11-07 02:49:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:21,190 INFO L93 Difference]: Finished difference Result 1218 states and 1593 transitions. [2019-11-07 02:49:21,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 02:49:21,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2019-11-07 02:49:21,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:21,203 INFO L225 Difference]: With dead ends: 1218 [2019-11-07 02:49:21,203 INFO L226 Difference]: Without dead ends: 1197 [2019-11-07 02:49:21,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 02:49:21,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2019-11-07 02:49:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1197. [2019-11-07 02:49:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1197 states. [2019-11-07 02:49:21,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1197 states to 1197 states and 1570 transitions. [2019-11-07 02:49:21,299 INFO L78 Accepts]: Start accepts. Automaton has 1197 states and 1570 transitions. Word has length 67 [2019-11-07 02:49:21,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:21,300 INFO L462 AbstractCegarLoop]: Abstraction has 1197 states and 1570 transitions. [2019-11-07 02:49:21,300 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 02:49:21,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1197 states and 1570 transitions. [2019-11-07 02:49:21,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-11-07 02:49:21,307 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:21,308 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:21,308 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:21,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:21,309 INFO L82 PathProgramCache]: Analyzing trace with hash 619420607, now seen corresponding path program 1 times [2019-11-07 02:49:21,309 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:21,309 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838677741] [2019-11-07 02:49:21,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-11-07 02:49:21,516 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838677741] [2019-11-07 02:49:21,516 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:21,517 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:21,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704521071] [2019-11-07 02:49:21,518 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:21,518 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:21,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:21,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:21,519 INFO L87 Difference]: Start difference. First operand 1197 states and 1570 transitions. Second operand 3 states. [2019-11-07 02:49:21,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:21,637 INFO L93 Difference]: Finished difference Result 2659 states and 3487 transitions. [2019-11-07 02:49:21,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:21,638 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2019-11-07 02:49:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:21,652 INFO L225 Difference]: With dead ends: 2659 [2019-11-07 02:49:21,652 INFO L226 Difference]: Without dead ends: 1482 [2019-11-07 02:49:21,657 INFO L630 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 [2019-11-07 02:49:21,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2019-11-07 02:49:21,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1461. [2019-11-07 02:49:21,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1461 states. [2019-11-07 02:49:21,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1461 states to 1461 states and 1916 transitions. [2019-11-07 02:49:21,801 INFO L78 Accepts]: Start accepts. Automaton has 1461 states and 1916 transitions. Word has length 106 [2019-11-07 02:49:21,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:21,801 INFO L462 AbstractCegarLoop]: Abstraction has 1461 states and 1916 transitions. [2019-11-07 02:49:21,802 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:21,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states and 1916 transitions. [2019-11-07 02:49:21,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 02:49:21,807 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:21,807 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:21,808 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:21,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:21,808 INFO L82 PathProgramCache]: Analyzing trace with hash -397243396, now seen corresponding path program 1 times [2019-11-07 02:49:21,808 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:21,808 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694239315] [2019-11-07 02:49:21,809 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 02:49:21,994 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694239315] [2019-11-07 02:49:21,995 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:21,995 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:49:21,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494890453] [2019-11-07 02:49:21,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:49:21,998 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:21,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:49:21,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:49:21,998 INFO L87 Difference]: Start difference. First operand 1461 states and 1916 transitions. Second operand 3 states. [2019-11-07 02:49:23,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:23,540 INFO L93 Difference]: Finished difference Result 3675 states and 4813 transitions. [2019-11-07 02:49:23,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:49:23,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2019-11-07 02:49:23,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:23,555 INFO L225 Difference]: With dead ends: 3675 [2019-11-07 02:49:23,555 INFO L226 Difference]: Without dead ends: 2242 [2019-11-07 02:49:23,562 INFO L630 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 [2019-11-07 02:49:23,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2242 states. [2019-11-07 02:49:23,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2242 to 2221. [2019-11-07 02:49:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2221 states. [2019-11-07 02:49:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2880 transitions. [2019-11-07 02:49:23,671 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2880 transitions. Word has length 157 [2019-11-07 02:49:23,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:23,672 INFO L462 AbstractCegarLoop]: Abstraction has 2221 states and 2880 transitions. [2019-11-07 02:49:23,672 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:49:23,672 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2880 transitions. [2019-11-07 02:49:23,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-11-07 02:49:23,677 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:23,677 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:23,677 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:23,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:23,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1288270035, now seen corresponding path program 1 times [2019-11-07 02:49:23,678 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:23,678 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443842143] [2019-11-07 02:49:23,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:23,841 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-07 02:49:23,841 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443842143] [2019-11-07 02:49:23,841 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:23,842 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 02:49:23,842 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269358389] [2019-11-07 02:49:23,842 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 02:49:23,843 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:23,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 02:49:23,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:49:23,843 INFO L87 Difference]: Start difference. First operand 2221 states and 2880 transitions. Second operand 5 states. [2019-11-07 02:49:23,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:23,933 INFO L93 Difference]: Finished difference Result 4468 states and 5849 transitions. [2019-11-07 02:49:23,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:49:23,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2019-11-07 02:49:23,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:23,950 INFO L225 Difference]: With dead ends: 4468 [2019-11-07 02:49:23,950 INFO L226 Difference]: Without dead ends: 2275 [2019-11-07 02:49:23,960 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:49:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2019-11-07 02:49:24,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2261. [2019-11-07 02:49:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2261 states. [2019-11-07 02:49:24,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 2930 transitions. [2019-11-07 02:49:24,086 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 2930 transitions. Word has length 144 [2019-11-07 02:49:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:24,086 INFO L462 AbstractCegarLoop]: Abstraction has 2261 states and 2930 transitions. [2019-11-07 02:49:24,087 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 02:49:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 2930 transitions. [2019-11-07 02:49:24,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 02:49:24,138 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:24,138 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:24,139 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:24,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:24,142 INFO L82 PathProgramCache]: Analyzing trace with hash 1056262520, now seen corresponding path program 1 times [2019-11-07 02:49:24,143 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:24,143 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187892044] [2019-11-07 02:49:24,143 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:24,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:24,341 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 02:49:24,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187892044] [2019-11-07 02:49:24,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:49:24,349 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 02:49:24,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097623674] [2019-11-07 02:49:24,350 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 02:49:24,350 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:49:24,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 02:49:24,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 02:49:24,351 INFO L87 Difference]: Start difference. First operand 2261 states and 2930 transitions. Second operand 4 states. [2019-11-07 02:49:24,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:49:24,483 INFO L93 Difference]: Finished difference Result 4502 states and 5840 transitions. [2019-11-07 02:49:24,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 02:49:24,483 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2019-11-07 02:49:24,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:49:24,500 INFO L225 Difference]: With dead ends: 4502 [2019-11-07 02:49:24,500 INFO L226 Difference]: Without dead ends: 2262 [2019-11-07 02:49:24,510 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-07 02:49:24,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2262 states. [2019-11-07 02:49:24,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2262 to 2262. [2019-11-07 02:49:24,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2262 states. [2019-11-07 02:49:24,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 2931 transitions. [2019-11-07 02:49:24,615 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 2931 transitions. Word has length 148 [2019-11-07 02:49:24,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:49:24,615 INFO L462 AbstractCegarLoop]: Abstraction has 2262 states and 2931 transitions. [2019-11-07 02:49:24,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 02:49:24,615 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 2931 transitions. [2019-11-07 02:49:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 02:49:24,622 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:49:24,622 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:49:24,622 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:49:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:49:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1615211683, now seen corresponding path program 1 times [2019-11-07 02:49:24,623 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:49:24,623 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934285472] [2019-11-07 02:49:24,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:49:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-11-07 02:49:24,865 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934285472] [2019-11-07 02:49:24,866 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396460585] [2019-11-07 02:49:24,866 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 [2019-11-07 02:49:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:49:25,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 1651 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 02:49:25,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:49:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 26 proven. 1 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 02:49:25,707 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:49:25,970 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-11-07 02:49:25,971 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1303325529] [2019-11-07 02:49:26,000 INFO L159 IcfgInterpreter]: Started Sifa with 131 locations of interest [2019-11-07 02:49:26,000 INFO L166 IcfgInterpreter]: Building call graph [2019-11-07 02:49:26,007 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-07 02:49:26,014 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-07 02:49:26,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs