/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_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 02:47:18,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 02:47:18,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 02:47:18,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 02:47:18,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 02:47:18,684 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 02:47:18,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 02:47:18,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 02:47:18,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 02:47:18,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 02:47:18,691 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 02:47:18,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 02:47:18,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 02:47:18,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 02:47:18,694 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 02:47:18,695 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 02:47:18,696 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 02:47:18,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 02:47:18,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 02:47:18,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 02:47:18,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 02:47:18,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 02:47:18,705 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 02:47:18,706 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 02:47:18,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 02:47:18,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 02:47:18,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 02:47:18,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 02:47:18,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 02:47:18,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 02:47:18,711 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 02:47:18,712 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 02:47:18,713 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 02:47:18,714 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 02:47:18,715 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 02:47:18,715 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 02:47:18,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 02:47:18,716 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 02:47:18,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 02:47:18,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 02:47:18,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 02:47:18,719 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 02:47:18,744 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 02:47:18,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 02:47:18,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 02:47:18,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 02:47:18,746 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 02:47:18,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 02:47:18,746 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 02:47:18,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 02:47:18,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 02:47:18,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 02:47:18,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 02:47:18,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 02:47:18,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 02:47:18,748 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 02:47:18,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 02:47:18,748 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 02:47:18,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 02:47:18,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 02:47:18,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 02:47:18,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 02:47:18,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 02:47:18,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 02:47:18,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 02:47:18,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 02:47:18,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 02:47:18,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 02:47:18,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 02:47:18,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 02:47:18,751 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 02:47:19,018 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 02:47:19,031 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 02:47:19,035 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 02:47:19,036 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 02:47:19,036 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 02:47:19,037 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-07 02:47:19,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca6274e/8c7b988144274f72bdeed6b80207d5f1/FLAG653208884 [2019-11-07 02:47:19,965 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 02:47:19,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-07 02:47:20,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca6274e/8c7b988144274f72bdeed6b80207d5f1/FLAG653208884 [2019-11-07 02:47:20,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38ca6274e/8c7b988144274f72bdeed6b80207d5f1 [2019-11-07 02:47:20,509 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 02:47:20,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 02:47:20,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 02:47:20,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 02:47:20,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 02:47:20,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:47:20" (1/1) ... [2019-11-07 02:47:20,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ed5cbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:20, skipping insertion in model container [2019-11-07 02:47:20,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:47:20" (1/1) ... [2019-11-07 02:47:20,563 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 02:47:20,775 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 02:47:22,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:47:22,821 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 02:47:23,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 02:47:23,349 INFO L192 MainTranslator]: Completed translation [2019-11-07 02:47:23,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23 WrapperNode [2019-11-07 02:47:23,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 02:47:23,351 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 02:47:23,351 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 02:47:23,351 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 02:47:23,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (1/1) ... [2019-11-07 02:47:23,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 02:47:23,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 02:47:23,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 02:47:23,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 02:47:23,676 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (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 02:47:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 02:47:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 02:47:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:47:23,775 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-07 02:47:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-07 02:47:23,776 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-07 02:47:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-07 02:47:23,777 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-07 02:47:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-07 02:47:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-11-07 02:47:23,778 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-11-07 02:47:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-11-07 02:47:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-11-07 02:47:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 02:47:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 02:47:23,779 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-11-07 02:47:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-11-07 02:47:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-07 02:47:23,781 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-11-07 02:47:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 02:47:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 02:47:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 02:47:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 02:47:23,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 02:47:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 02:47:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 02:47:23,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-07 02:47:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-07 02:47:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-11-07 02:47:23,784 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-11-07 02:47:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-11-07 02:47:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-11-07 02:47:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-11-07 02:47:23,785 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-11-07 02:47:23,786 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-11-07 02:47:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-11-07 02:47:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-11-07 02:47:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-11-07 02:47:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-11-07 02:47:23,787 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-11-07 02:47:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-11-07 02:47:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-11-07 02:47:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-11-07 02:47:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-11-07 02:47:23,788 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-11-07 02:47:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-11-07 02:47:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-11-07 02:47:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-11-07 02:47:23,789 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-11-07 02:47:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-11-07 02:47:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-11-07 02:47:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-11-07 02:47:23,790 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-11-07 02:47:23,791 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-11-07 02:47:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-11-07 02:47:23,792 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-11-07 02:47:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-11-07 02:47:23,793 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-11-07 02:47:23,794 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-11-07 02:47:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-11-07 02:47:23,795 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-11-07 02:47:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-11-07 02:47:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-11-07 02:47:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-11-07 02:47:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-11-07 02:47:23,796 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-11-07 02:47:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-11-07 02:47:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-11-07 02:47:23,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-11-07 02:47:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-11-07 02:47:23,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-11-07 02:47:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 02:47:23,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-07 02:47:23,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-07 02:47:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-07 02:47:23,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-07 02:47:23,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-07 02:47:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-11-07 02:47:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-11-07 02:47:23,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-11-07 02:47:23,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-11-07 02:47:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-11-07 02:47:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-11-07 02:47:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-11-07 02:47:23,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-11-07 02:47:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-11-07 02:47:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-11-07 02:47:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-11-07 02:47:23,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-11-07 02:47:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-11-07 02:47:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-11-07 02:47:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-11-07 02:47:23,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-07 02:47:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-07 02:47:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-07 02:47:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-07 02:47:23,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-07 02:47:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-07 02:47:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-07 02:47:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-07 02:47:23,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-07 02:47:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-07 02:47:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 02:47:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-07 02:47:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-07 02:47:23,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-07 02:47:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-07 02:47:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-07 02:47:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 02:47:23,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-07 02:47:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-11-07 02:47:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-07 02:47:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-07 02:47:23,814 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-11-07 02:47:23,815 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-11-07 02:47:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-11-07 02:47:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-11-07 02:47:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-11-07 02:47:23,816 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-11-07 02:47:23,817 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-11-07 02:47:23,818 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-11-07 02:47:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-11-07 02:47:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-11-07 02:47:23,819 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-11-07 02:47:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-11-07 02:47:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-11-07 02:47:23,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-11-07 02:47:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-11-07 02:47:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-11-07 02:47:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-07 02:47:23,822 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-11-07 02:47:23,823 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-11-07 02:47:23,823 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 02:47:23,824 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-11-07 02:47:23,828 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-11-07 02:47:23,829 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-11-07 02:47:23,829 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-07 02:47:23,829 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-07 02:47:23,830 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-07 02:47:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-11-07 02:47:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-11-07 02:47:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-11-07 02:47:23,831 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-11-07 02:47:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 02:47:23,836 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 02:47:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 02:47:23,837 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 02:47:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 02:47:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-07 02:47:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-07 02:47:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-07 02:47:23,838 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-07 02:47:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-07 02:47:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-07 02:47:23,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 02:47:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 02:47:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-07 02:47:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-07 02:47:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-11-07 02:47:23,841 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-07 02:47:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-11-07 02:47:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-07 02:47:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-11-07 02:47:23,842 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-11-07 02:47:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-11-07 02:47:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-11-07 02:47:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-07 02:47:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-11-07 02:47:23,843 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-11-07 02:47:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-11-07 02:47:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-11-07 02:47:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 02:47:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 02:47:23,844 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 02:47:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 02:47:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-11-07 02:47:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-11-07 02:47:23,845 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-07 02:47:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-07 02:47:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-07 02:47:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-07 02:47:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-07 02:47:23,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-07 02:47:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-07 02:47:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-11-07 02:47:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-11-07 02:47:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-11-07 02:47:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-11-07 02:47:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-11-07 02:47:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-11-07 02:47:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-07 02:47:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-07 02:47:23,849 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-07 02:47:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-07 02:47:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-11-07 02:47:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 02:47:23,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 02:47:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-11-07 02:47:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-07 02:47:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-07 02:47:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-07 02:47:23,851 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 02:47:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 02:47:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 02:47:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 02:47:23,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 02:47:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 02:47:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 02:47:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 02:47:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 02:47:23,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 02:47:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 02:47:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 02:47:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 02:47:23,854 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 02:47:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 02:47:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-07 02:47:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-11-07 02:47:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-11-07 02:47:23,855 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-11-07 02:47:23,856 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-11-07 02:47:23,856 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-11-07 02:47:23,856 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-11-07 02:47:23,856 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-11-07 02:47:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-11-07 02:47:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-11-07 02:47:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-11-07 02:47:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-11-07 02:47:23,857 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-11-07 02:47:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-11-07 02:47:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-11-07 02:47:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-11-07 02:47:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-11-07 02:47:23,858 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-11-07 02:47:23,859 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-11-07 02:47:23,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-11-07 02:47:23,861 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-11-07 02:47:23,862 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-11-07 02:47:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-11-07 02:47:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-11-07 02:47:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-11-07 02:47:23,866 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 02:47:23,867 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-11-07 02:47:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-11-07 02:47:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-11-07 02:47:23,870 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-11-07 02:47:23,871 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-11-07 02:47:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-07 02:47:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-11-07 02:47:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-11-07 02:47:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-11-07 02:47:23,872 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-11-07 02:47:23,873 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 02:47:23,874 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-07 02:47:23,875 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 02:47:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 02:47:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 02:47:23,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 02:47:24,988 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 02:47:28,251 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 02:47:28,252 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 02:47:28,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:47:28 BoogieIcfgContainer [2019-11-07 02:47:28,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 02:47:28,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 02:47:28,255 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 02:47:28,258 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 02:47:28,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:47:20" (1/3) ... [2019-11-07 02:47:28,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84227e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:47:28, skipping insertion in model container [2019-11-07 02:47:28,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:47:23" (2/3) ... [2019-11-07 02:47:28,259 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@84227e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:47:28, skipping insertion in model container [2019-11-07 02:47:28,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:47:28" (3/3) ... [2019-11-07 02:47:28,261 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-07 02:47:28,271 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 02:47:28,280 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 02:47:28,291 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 02:47:28,320 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 02:47:28,320 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 02:47:28,321 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 02:47:28,321 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 02:47:28,321 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 02:47:28,321 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 02:47:28,321 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 02:47:28,321 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 02:47:28,356 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states. [2019-11-07 02:47:28,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-11-07 02:47:28,374 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:28,375 INFO L410 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] [2019-11-07 02:47:28,377 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:28,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1161243419, now seen corresponding path program 1 times [2019-11-07 02:47:28,392 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:28,393 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839175813] [2019-11-07 02:47:28,393 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:28,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:28,916 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:28,917 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839175813] [2019-11-07 02:47:28,918 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:28,918 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 02:47:28,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232542225] [2019-11-07 02:47:28,924 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:28,924 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:28,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:28,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:28,940 INFO L87 Difference]: Start difference. First operand 913 states. Second operand 3 states. [2019-11-07 02:47:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:29,244 INFO L93 Difference]: Finished difference Result 2526 states and 3351 transitions. [2019-11-07 02:47:29,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:29,246 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-11-07 02:47:29,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:29,285 INFO L225 Difference]: With dead ends: 2526 [2019-11-07 02:47:29,285 INFO L226 Difference]: Without dead ends: 1644 [2019-11-07 02:47:29,298 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 02:47:29,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2019-11-07 02:47:29,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2019-11-07 02:47:29,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2019-11-07 02:47:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2109 transitions. [2019-11-07 02:47:29,520 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2109 transitions. Word has length 69 [2019-11-07 02:47:29,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:29,521 INFO L462 AbstractCegarLoop]: Abstraction has 1644 states and 2109 transitions. [2019-11-07 02:47:29,521 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:29,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2109 transitions. [2019-11-07 02:47:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-11-07 02:47:29,535 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:29,535 INFO L410 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:47:29,536 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:29,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:29,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2044195943, now seen corresponding path program 1 times [2019-11-07 02:47:29,538 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:29,538 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904661252] [2019-11-07 02:47:29,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:29,656 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:29,656 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [941744530] [2019-11-07 02:47:29,656 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 02:47:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:30,318 INFO L256 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 02:47:30,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:30,411 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:30,411 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:30,575 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904661252] [2019-11-07 02:47:30,575 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:30,575 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941744530] [2019-11-07 02:47:30,576 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:30,576 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-07 02:47:30,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731818259] [2019-11-07 02:47:30,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 02:47:30,578 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:30,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 02:47:30,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 02:47:30,579 INFO L87 Difference]: Start difference. First operand 1644 states and 2109 transitions. Second operand 9 states. [2019-11-07 02:47:32,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:32,139 INFO L93 Difference]: Finished difference Result 3274 states and 4281 transitions. [2019-11-07 02:47:32,140 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 02:47:32,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-11-07 02:47:32,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:32,168 INFO L225 Difference]: With dead ends: 3274 [2019-11-07 02:47:32,168 INFO L226 Difference]: Without dead ends: 3230 [2019-11-07 02:47:32,171 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-11-07 02:47:32,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2019-11-07 02:47:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3230. [2019-11-07 02:47:32,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3230 states. [2019-11-07 02:47:32,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4227 transitions. [2019-11-07 02:47:32,340 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4227 transitions. Word has length 84 [2019-11-07 02:47:32,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:32,342 INFO L462 AbstractCegarLoop]: Abstraction has 3230 states and 4227 transitions. [2019-11-07 02:47:32,343 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 02:47:32,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4227 transitions. [2019-11-07 02:47:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-11-07 02:47:32,353 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:32,353 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-11-07 02:47:32,559 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:32,560 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:32,560 INFO L82 PathProgramCache]: Analyzing trace with hash 24119941, now seen corresponding path program 1 times [2019-11-07 02:47:32,560 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:32,561 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245212106] [2019-11-07 02:47:32,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:32,676 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:32,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215315035] [2019-11-07 02:47:32,676 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 [2019-11-07 02:47:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:33,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:47:33,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:33,281 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:33,281 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:33,490 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:33,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245212106] [2019-11-07 02:47:33,491 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:33,491 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215315035] [2019-11-07 02:47:33,491 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:33,492 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:47:33,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107187113] [2019-11-07 02:47:33,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:33,493 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:33,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:33,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:33,494 INFO L87 Difference]: Start difference. First operand 3230 states and 4227 transitions. Second operand 3 states. [2019-11-07 02:47:33,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:33,755 INFO L93 Difference]: Finished difference Result 9078 states and 11788 transitions. [2019-11-07 02:47:33,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:33,756 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-11-07 02:47:33,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:33,805 INFO L225 Difference]: With dead ends: 9078 [2019-11-07 02:47:33,806 INFO L226 Difference]: Without dead ends: 5870 [2019-11-07 02:47:33,820 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 236 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 02:47:33,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2019-11-07 02:47:34,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5859. [2019-11-07 02:47:34,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2019-11-07 02:47:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 7574 transitions. [2019-11-07 02:47:34,143 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 7574 transitions. Word has length 119 [2019-11-07 02:47:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:34,143 INFO L462 AbstractCegarLoop]: Abstraction has 5859 states and 7574 transitions. [2019-11-07 02:47:34,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 7574 transitions. [2019-11-07 02:47:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-11-07 02:47:34,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:34,158 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2019-11-07 02:47:34,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:34,365 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:34,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:34,365 INFO L82 PathProgramCache]: Analyzing trace with hash -253902920, now seen corresponding path program 1 times [2019-11-07 02:47:34,366 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:34,366 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616618254] [2019-11-07 02:47:34,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:34,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:34,589 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616618254] [2019-11-07 02:47:34,589 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-07 02:47:34,589 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710124008] [2019-11-07 02:47:34,590 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 [2019-11-07 02:47:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:35,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:47:35,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:35,343 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:35,344 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-07 02:47:35,471 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:35,471 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:47:35,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610846269] [2019-11-07 02:47:35,472 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:35,472 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:35,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:35,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:35,473 INFO L87 Difference]: Start difference. First operand 5859 states and 7574 transitions. Second operand 3 states. [2019-11-07 02:47:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:35,781 INFO L93 Difference]: Finished difference Result 15841 states and 20440 transitions. [2019-11-07 02:47:35,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:35,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-11-07 02:47:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:35,841 INFO L225 Difference]: With dead ends: 15841 [2019-11-07 02:47:35,841 INFO L226 Difference]: Without dead ends: 10004 [2019-11-07 02:47:35,865 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 274 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 02:47:35,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2019-11-07 02:47:36,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9925. [2019-11-07 02:47:36,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9925 states. [2019-11-07 02:47:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9925 states to 9925 states and 12797 transitions. [2019-11-07 02:47:36,283 INFO L78 Accepts]: Start accepts. Automaton has 9925 states and 12797 transitions. Word has length 138 [2019-11-07 02:47:36,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:36,284 INFO L462 AbstractCegarLoop]: Abstraction has 9925 states and 12797 transitions. [2019-11-07 02:47:36,284 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:36,284 INFO L276 IsEmpty]: Start isEmpty. Operand 9925 states and 12797 transitions. [2019-11-07 02:47:36,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 02:47:36,297 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:36,298 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2019-11-07 02:47:36,513 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:36,513 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:36,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:36,514 INFO L82 PathProgramCache]: Analyzing trace with hash -2067567937, now seen corresponding path program 1 times [2019-11-07 02:47:36,514 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:36,514 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923022780] [2019-11-07 02:47:36,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:37,347 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923022780] [2019-11-07 02:47:37,348 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-07 02:47:37,348 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640825016] [2019-11-07 02:47:37,348 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 [2019-11-07 02:47:37,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:37,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:47:37,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:37,972 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-07 02:47:37,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:38,175 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 02:47:38,175 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:38,175 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:47:38,176 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953074497] [2019-11-07 02:47:38,176 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:38,176 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:38,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:38,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:38,177 INFO L87 Difference]: Start difference. First operand 9925 states and 12797 transitions. Second operand 3 states. [2019-11-07 02:47:38,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:38,580 INFO L93 Difference]: Finished difference Result 24605 states and 31626 transitions. [2019-11-07 02:47:38,580 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:38,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-11-07 02:47:38,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:38,681 INFO L225 Difference]: With dead ends: 24605 [2019-11-07 02:47:38,682 INFO L226 Difference]: Without dead ends: 14702 [2019-11-07 02:47:38,725 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 306 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 02:47:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2019-11-07 02:47:39,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 14687. [2019-11-07 02:47:39,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14687 states. [2019-11-07 02:47:39,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 18826 transitions. [2019-11-07 02:47:39,345 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 18826 transitions. Word has length 154 [2019-11-07 02:47:39,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:39,345 INFO L462 AbstractCegarLoop]: Abstraction has 14687 states and 18826 transitions. [2019-11-07 02:47:39,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:39,346 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 18826 transitions. [2019-11-07 02:47:39,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 02:47:39,357 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:39,357 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:47:39,565 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:39,565 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:39,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:39,566 INFO L82 PathProgramCache]: Analyzing trace with hash -178789606, now seen corresponding path program 1 times [2019-11-07 02:47:39,566 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:39,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083803762] [2019-11-07 02:47:39,566 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:39,607 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:39,607 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429371126] [2019-11-07 02:47:39,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:40,244 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:47:40,250 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:40,274 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 02:47:40,274 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-07 02:47:40,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083803762] [2019-11-07 02:47:40,485 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:40,485 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429371126] [2019-11-07 02:47:40,485 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:40,485 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:47:40,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157009742] [2019-11-07 02:47:40,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:40,486 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:40,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:40,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:40,487 INFO L87 Difference]: Start difference. First operand 14687 states and 18826 transitions. Second operand 3 states. [2019-11-07 02:47:41,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:41,007 INFO L93 Difference]: Finished difference Result 37741 states and 48360 transitions. [2019-11-07 02:47:41,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:41,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 02:47:41,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:41,109 INFO L225 Difference]: With dead ends: 37741 [2019-11-07 02:47:41,109 INFO L226 Difference]: Without dead ends: 23084 [2019-11-07 02:47:41,164 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 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 02:47:41,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23084 states. [2019-11-07 02:47:41,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23084 to 23073. [2019-11-07 02:47:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23073 states. [2019-11-07 02:47:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23073 states to 23073 states and 29351 transitions. [2019-11-07 02:47:43,014 INFO L78 Accepts]: Start accepts. Automaton has 23073 states and 29351 transitions. Word has length 162 [2019-11-07 02:47:43,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:43,015 INFO L462 AbstractCegarLoop]: Abstraction has 23073 states and 29351 transitions. [2019-11-07 02:47:43,015 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:43,015 INFO L276 IsEmpty]: Start isEmpty. Operand 23073 states and 29351 transitions. [2019-11-07 02:47:43,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 02:47:43,026 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:43,027 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:47:43,233 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:43,233 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:43,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:43,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1391945198, now seen corresponding path program 1 times [2019-11-07 02:47:43,234 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:43,234 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505382366] [2019-11-07 02:47:43,234 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:43,273 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:43,274 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232131078] [2019-11-07 02:47:43,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:44,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-07 02:47:44,066 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-07 02:47:44,088 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:44,241 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-07 02:47:44,242 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505382366] [2019-11-07 02:47:44,242 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:44,242 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232131078] [2019-11-07 02:47:44,242 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:44,242 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-07 02:47:44,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330098640] [2019-11-07 02:47:44,243 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 02:47:44,244 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:44,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 02:47:44,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 02:47:44,244 INFO L87 Difference]: Start difference. First operand 23073 states and 29351 transitions. Second operand 3 states. [2019-11-07 02:47:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:44,591 INFO L93 Difference]: Finished difference Result 34964 states and 45170 transitions. [2019-11-07 02:47:44,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 02:47:44,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 02:47:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:44,683 INFO L225 Difference]: With dead ends: 34964 [2019-11-07 02:47:44,683 INFO L226 Difference]: Without dead ends: 23161 [2019-11-07 02:47:44,719 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 322 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 02:47:44,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2019-11-07 02:47:45,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 23117. [2019-11-07 02:47:45,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23117 states. [2019-11-07 02:47:45,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23117 states to 23117 states and 29395 transitions. [2019-11-07 02:47:45,666 INFO L78 Accepts]: Start accepts. Automaton has 23117 states and 29395 transitions. Word has length 162 [2019-11-07 02:47:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:45,667 INFO L462 AbstractCegarLoop]: Abstraction has 23117 states and 29395 transitions. [2019-11-07 02:47:45,667 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 02:47:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 23117 states and 29395 transitions. [2019-11-07 02:47:45,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-11-07 02:47:45,679 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:45,679 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:47:45,887 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:45,888 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:45,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1614236032, now seen corresponding path program 1 times [2019-11-07 02:47:45,889 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:45,889 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746025644] [2019-11-07 02:47:45,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:45,934 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:45,935 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1704696592] [2019-11-07 02:47:45,935 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:46,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-07 02:47:46,609 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:46,647 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 02:47:46,647 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:46,812 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-07 02:47:46,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746025644] [2019-11-07 02:47:46,812 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:46,812 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704696592] [2019-11-07 02:47:46,813 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:46,813 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 02:47:46,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652544118] [2019-11-07 02:47:46,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 02:47:46,815 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:46,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 02:47:46,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 02:47:46,822 INFO L87 Difference]: Start difference. First operand 23117 states and 29395 transitions. Second operand 8 states. [2019-11-07 02:47:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 02:47:47,585 INFO L93 Difference]: Finished difference Result 46334 states and 58920 transitions. [2019-11-07 02:47:47,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-07 02:47:47,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2019-11-07 02:47:47,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 02:47:47,664 INFO L225 Difference]: With dead ends: 46334 [2019-11-07 02:47:47,665 INFO L226 Difference]: Without dead ends: 23187 [2019-11-07 02:47:47,703 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 02:47:47,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2019-11-07 02:47:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 23144. [2019-11-07 02:47:48,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23144 states. [2019-11-07 02:47:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 29410 transitions. [2019-11-07 02:47:48,310 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 29410 transitions. Word has length 163 [2019-11-07 02:47:48,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 02:47:48,311 INFO L462 AbstractCegarLoop]: Abstraction has 23144 states and 29410 transitions. [2019-11-07 02:47:48,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 02:47:48,311 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 29410 transitions. [2019-11-07 02:47:48,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 02:47:48,323 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 02:47:48,323 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 02:47:48,532 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:48,533 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 02:47:48,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 02:47:48,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1221559874, now seen corresponding path program 1 times [2019-11-07 02:47:48,534 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 02:47:48,534 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807291124] [2019-11-07 02:47:48,534 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 02:47:48,577 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 02:47:48,578 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1835845514] [2019-11-07 02:47:48,578 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 02:47:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 02:47:49,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 02:47:49,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 02:47:49,335 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-11-07 02:47:49,335 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 02:47:49,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:47:50,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:47:50,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 02:47:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-07 02:47:50,227 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807291124] [2019-11-07 02:47:50,228 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 02:47:50,228 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835845514] [2019-11-07 02:47:50,228 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 02:47:50,228 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2019-11-07 02:47:50,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713573467] [2019-11-07 02:47:50,229 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 02:47:50,229 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 02:47:50,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 02:47:50,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-11-07 02:47:50,230 INFO L87 Difference]: Start difference. First operand 23144 states and 29410 transitions. Second operand 8 states.