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-f4eb214f-m [2019-10-13 22:18:16,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:18:16,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:18:16,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:18:16,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:18:16,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:18:16,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:18:16,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:18:16,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:18:16,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:18:16,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:18:16,998 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:18:16,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:18:17,000 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:18:17,001 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:18:17,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:18:17,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:18:17,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:18:17,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:18:17,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:18:17,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:18:17,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:18:17,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:18:17,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:18:17,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:18:17,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:18:17,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:18:17,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:18:17,026 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:18:17,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:18:17,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:18:17,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:18:17,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:18:17,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:18:17,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:18:17,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:18:17,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:18:17,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:18:17,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:18:17,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:18:17,037 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:18:17,038 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 22:18:17,056 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:18:17,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:18:17,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:18:17,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:18:17,059 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:18:17,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:18:17,060 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:18:17,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:18:17,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:18:17,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:18:17,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:18:17,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:18:17,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:18:17,063 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:18:17,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:18:17,064 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:18:17,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:18:17,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:18:17,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:18:17,065 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:18:17,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:18:17,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:18:17,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:18:17,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:18:17,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:18:17,067 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:18:17,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:18:17,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:18:17,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:18:17,328 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:18:17,341 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:18:17,344 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:18:17,345 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:18:17,346 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:18:17,346 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-13 22:18:17,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bba26fe7/46113cd2aed24fa0928133dadad99926/FLAG857a64345 [2019-10-13 22:18:18,148 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:18:18,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-13 22:18:18,185 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bba26fe7/46113cd2aed24fa0928133dadad99926/FLAG857a64345 [2019-10-13 22:18:18,700 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bba26fe7/46113cd2aed24fa0928133dadad99926 [2019-10-13 22:18:18,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:18:18,710 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:18:18,711 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:18:18,711 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:18:18,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:18:18,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:18" (1/1) ... [2019-10-13 22:18:18,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a90da54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:18, skipping insertion in model container [2019-10-13 22:18:18,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:18:18" (1/1) ... [2019-10-13 22:18:18,727 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:18:18,863 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:18:20,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:18:20,634 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:18:20,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:18:21,119 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:18:21,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21 WrapperNode [2019-10-13 22:18:21,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:18:21,121 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:18:21,121 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:18:21,121 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:18:21,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,211 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,213 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,306 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... [2019-10-13 22:18:21,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:18:21,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:18:21,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:18:21,358 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:18:21,359 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:18:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:18:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:18:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:18:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 22:18:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 22:18:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 22:18:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 22:18:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 22:18:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 22:18:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 22:18:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 22:18:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 22:18:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 22:18:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 22:18:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 22:18:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-13 22:18:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-13 22:18:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 22:18:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 22:18:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 22:18:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 22:18:21,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 22:18:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 22:18:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 22:18:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 22:18:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 22:18:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-13 22:18:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-13 22:18:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-10-13 22:18:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-10-13 22:18:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-10-13 22:18:21,443 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-10-13 22:18:21,444 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-10-13 22:18:21,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 22:18:21,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-13 22:18:21,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-10-13 22:18:21,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 22:18:21,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 22:18:21,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 22:18:21,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 22:18:21,452 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-10-13 22:18:21,453 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-13 22:18:21,454 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 22:18:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-10-13 22:18:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-10-13 22:18:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 22:18:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-10-13 22:18:21,455 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-10-13 22:18:21,456 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-13 22:18:21,457 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-13 22:18:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 22:18:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 22:18:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 22:18:21,458 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 22:18:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:18:21,458 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 22:18:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 22:18:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 22:18:21,461 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-13 22:18:21,462 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-10-13 22:18:21,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 22:18:21,464 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 22:18:21,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 22:18:21,466 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 22:18:21,467 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-10-13 22:18:21,468 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 22:18:21,469 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-10-13 22:18:21,470 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:18:21,471 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-10-13 22:18:21,472 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-10-13 22:18:21,473 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-13 22:18:21,474 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-10-13 22:18:21,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-10-13 22:18:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-10-13 22:18:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-10-13 22:18:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-10-13 22:18:21,479 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 22:18:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 22:18:21,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:18:21,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 22:18:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 22:18:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 22:18:21,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 22:18:22,598 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 22:18:25,881 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:18:25,881 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 22:18:25,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:25 BoogieIcfgContainer [2019-10-13 22:18:25,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:18:25,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:18:25,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:18:25,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:18:25,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:18:18" (1/3) ... [2019-10-13 22:18:25,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4b8f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:25, skipping insertion in model container [2019-10-13 22:18:25,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:18:21" (2/3) ... [2019-10-13 22:18:25,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4b8f29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:18:25, skipping insertion in model container [2019-10-13 22:18:25,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:18:25" (3/3) ... [2019-10-13 22:18:25,897 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 [2019-10-13 22:18:25,907 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:18:25,917 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:18:25,929 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:18:25,961 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:18:25,961 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:18:25,961 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:18:25,961 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:18:25,961 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:18:25,961 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:18:25,962 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:18:25,962 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:18:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states. [2019-10-13 22:18:26,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-13 22:18:26,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:26,018 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:18:26,020 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:26,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:26,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1161243419, now seen corresponding path program 1 times [2019-10-13 22:18:26,035 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:26,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354925869] [2019-10-13 22:18:26,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:26,036 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:26,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:26,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:26,589 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:26,590 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354925869] [2019-10-13 22:18:26,591 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:26,591 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 22:18:26,592 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315706970] [2019-10-13 22:18:26,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:26,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:26,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:26,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:26,614 INFO L87 Difference]: Start difference. First operand 913 states. Second operand 3 states. [2019-10-13 22:18:26,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:26,937 INFO L93 Difference]: Finished difference Result 2526 states and 3351 transitions. [2019-10-13 22:18:26,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:26,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2019-10-13 22:18:26,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:26,974 INFO L225 Difference]: With dead ends: 2526 [2019-10-13 22:18:26,975 INFO L226 Difference]: Without dead ends: 1644 [2019-10-13 22:18:26,986 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:27,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2019-10-13 22:18:27,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1644. [2019-10-13 22:18:27,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1644 states. [2019-10-13 22:18:27,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1644 states to 1644 states and 2109 transitions. [2019-10-13 22:18:27,193 INFO L78 Accepts]: Start accepts. Automaton has 1644 states and 2109 transitions. Word has length 69 [2019-10-13 22:18:27,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:27,194 INFO L462 AbstractCegarLoop]: Abstraction has 1644 states and 2109 transitions. [2019-10-13 22:18:27,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:27,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1644 states and 2109 transitions. [2019-10-13 22:18:27,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-10-13 22:18:27,207 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:27,207 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:18:27,207 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:27,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:27,208 INFO L82 PathProgramCache]: Analyzing trace with hash -2044195943, now seen corresponding path program 1 times [2019-10-13 22:18:27,208 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:27,209 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788928632] [2019-10-13 22:18:27,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:27,209 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:27,213 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:27,330 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:27,331 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480499863] [2019-10-13 22:18:27,331 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:27,859 INFO L256 TraceCheckSpWp]: Trace formula consists of 1425 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 22:18:27,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:27,934 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:27,934 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:28,087 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:28,087 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788928632] [2019-10-13 22:18:28,087 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:28,088 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480499863] [2019-10-13 22:18:28,088 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:28,089 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-13 22:18:28,089 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716406303] [2019-10-13 22:18:28,091 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 22:18:28,091 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:28,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 22:18:28,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 22:18:28,092 INFO L87 Difference]: Start difference. First operand 1644 states and 2109 transitions. Second operand 9 states. [2019-10-13 22:18:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:29,433 INFO L93 Difference]: Finished difference Result 3274 states and 4281 transitions. [2019-10-13 22:18:29,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 22:18:29,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2019-10-13 22:18:29,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:29,456 INFO L225 Difference]: With dead ends: 3274 [2019-10-13 22:18:29,456 INFO L226 Difference]: Without dead ends: 3230 [2019-10-13 22:18:29,459 INFO L600 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 [2019-10-13 22:18:29,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2019-10-13 22:18:29,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3230. [2019-10-13 22:18:29,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3230 states. [2019-10-13 22:18:29,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3230 states to 3230 states and 4227 transitions. [2019-10-13 22:18:29,608 INFO L78 Accepts]: Start accepts. Automaton has 3230 states and 4227 transitions. Word has length 84 [2019-10-13 22:18:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:29,609 INFO L462 AbstractCegarLoop]: Abstraction has 3230 states and 4227 transitions. [2019-10-13 22:18:29,609 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 22:18:29,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3230 states and 4227 transitions. [2019-10-13 22:18:29,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2019-10-13 22:18:29,618 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:29,619 INFO L380 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] [2019-10-13 22:18:29,825 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:29,826 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:29,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:29,827 INFO L82 PathProgramCache]: Analyzing trace with hash 24119941, now seen corresponding path program 1 times [2019-10-13 22:18:29,827 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:29,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436619771] [2019-10-13 22:18:29,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:29,828 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:29,828 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:29,880 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:29,881 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [739399014] [2019-10-13 22:18:29,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:30,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:30,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 1580 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:18:30,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:30,347 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:30,348 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:30,455 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:30,455 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436619771] [2019-10-13 22:18:30,456 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:30,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739399014] [2019-10-13 22:18:30,456 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:30,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 22:18:30,521 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160827206] [2019-10-13 22:18:30,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:30,523 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:30,524 INFO L87 Difference]: Start difference. First operand 3230 states and 4227 transitions. Second operand 3 states. [2019-10-13 22:18:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:30,759 INFO L93 Difference]: Finished difference Result 9078 states and 11788 transitions. [2019-10-13 22:18:30,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:30,759 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 119 [2019-10-13 22:18:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:30,798 INFO L225 Difference]: With dead ends: 9078 [2019-10-13 22:18:30,798 INFO L226 Difference]: Without dead ends: 5870 [2019-10-13 22:18:30,814 INFO L600 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 [2019-10-13 22:18:30,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5870 states. [2019-10-13 22:18:31,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5870 to 5859. [2019-10-13 22:18:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5859 states. [2019-10-13 22:18:31,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 7574 transitions. [2019-10-13 22:18:31,089 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 7574 transitions. Word has length 119 [2019-10-13 22:18:31,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:31,090 INFO L462 AbstractCegarLoop]: Abstraction has 5859 states and 7574 transitions. [2019-10-13 22:18:31,090 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:31,090 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 7574 transitions. [2019-10-13 22:18:31,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2019-10-13 22:18:31,099 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:31,099 INFO L380 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] [2019-10-13 22:18:31,306 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:31,307 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:31,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:31,307 INFO L82 PathProgramCache]: Analyzing trace with hash -253902920, now seen corresponding path program 1 times [2019-10-13 22:18:31,307 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:31,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776188793] [2019-10-13 22:18:31,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:31,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:31,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:31,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776188793] [2019-10-13 22:18:31,510 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 22:18:31,510 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407363172] [2019-10-13 22:18:31,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:31,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:18:31,980 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:32,086 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:32,086 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:32,203 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 22:18:32,204 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:32,204 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 22:18:32,204 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451264332] [2019-10-13 22:18:32,205 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:32,205 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:32,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:32,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:32,208 INFO L87 Difference]: Start difference. First operand 5859 states and 7574 transitions. Second operand 3 states. [2019-10-13 22:18:32,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:32,530 INFO L93 Difference]: Finished difference Result 15841 states and 20440 transitions. [2019-10-13 22:18:32,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:32,530 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2019-10-13 22:18:32,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:32,595 INFO L225 Difference]: With dead ends: 15841 [2019-10-13 22:18:32,596 INFO L226 Difference]: Without dead ends: 10004 [2019-10-13 22:18:32,621 INFO L600 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 [2019-10-13 22:18:32,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10004 states. [2019-10-13 22:18:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10004 to 9925. [2019-10-13 22:18:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9925 states. [2019-10-13 22:18:33,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9925 states to 9925 states and 12797 transitions. [2019-10-13 22:18:33,067 INFO L78 Accepts]: Start accepts. Automaton has 9925 states and 12797 transitions. Word has length 138 [2019-10-13 22:18:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:33,068 INFO L462 AbstractCegarLoop]: Abstraction has 9925 states and 12797 transitions. [2019-10-13 22:18:33,068 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 9925 states and 12797 transitions. [2019-10-13 22:18:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-13 22:18:33,085 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:33,085 INFO L380 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] [2019-10-13 22:18:33,292 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:33,293 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:33,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:33,293 INFO L82 PathProgramCache]: Analyzing trace with hash -2067567937, now seen corresponding path program 1 times [2019-10-13 22:18:33,294 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:33,294 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872155051] [2019-10-13 22:18:33,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:33,294 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:33,295 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:33,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872155051] [2019-10-13 22:18:33,612 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 22:18:33,612 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901519705] [2019-10-13 22:18:33,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:34,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 1796 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:18:34,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:34,164 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 22:18:34,165 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:34,318 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 22:18:34,319 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:34,319 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 22:18:34,319 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678377028] [2019-10-13 22:18:34,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:34,320 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:34,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:34,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:34,321 INFO L87 Difference]: Start difference. First operand 9925 states and 12797 transitions. Second operand 3 states. [2019-10-13 22:18:34,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:34,691 INFO L93 Difference]: Finished difference Result 24605 states and 31626 transitions. [2019-10-13 22:18:34,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:34,691 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2019-10-13 22:18:34,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:34,780 INFO L225 Difference]: With dead ends: 24605 [2019-10-13 22:18:34,780 INFO L226 Difference]: Without dead ends: 14702 [2019-10-13 22:18:34,817 INFO L600 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 [2019-10-13 22:18:34,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14702 states. [2019-10-13 22:18:36,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14702 to 14687. [2019-10-13 22:18:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14687 states. [2019-10-13 22:18:36,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14687 states to 14687 states and 18826 transitions. [2019-10-13 22:18:36,138 INFO L78 Accepts]: Start accepts. Automaton has 14687 states and 18826 transitions. Word has length 154 [2019-10-13 22:18:36,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:36,139 INFO L462 AbstractCegarLoop]: Abstraction has 14687 states and 18826 transitions. [2019-10-13 22:18:36,139 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:36,139 INFO L276 IsEmpty]: Start isEmpty. Operand 14687 states and 18826 transitions. [2019-10-13 22:18:36,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 22:18:36,150 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:36,150 INFO L380 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] [2019-10-13 22:18:36,364 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:36,365 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:36,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:36,365 INFO L82 PathProgramCache]: Analyzing trace with hash -178789606, now seen corresponding path program 1 times [2019-10-13 22:18:36,365 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:36,365 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144114795] [2019-10-13 22:18:36,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:36,366 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:36,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:36,410 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:36,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1232210937] [2019-10-13 22:18:36,411 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 [2019-10-13 22:18:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:36,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:18:36,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:36,891 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 22:18:36,891 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:37,011 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 22:18:37,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144114795] [2019-10-13 22:18:37,011 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:37,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232210937] [2019-10-13 22:18:37,012 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:37,012 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 22:18:37,012 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755093324] [2019-10-13 22:18:37,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:37,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:37,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:37,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:37,015 INFO L87 Difference]: Start difference. First operand 14687 states and 18826 transitions. Second operand 3 states. [2019-10-13 22:18:37,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:37,730 INFO L93 Difference]: Finished difference Result 37741 states and 48360 transitions. [2019-10-13 22:18:37,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:37,731 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 22:18:37,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:37,836 INFO L225 Difference]: With dead ends: 37741 [2019-10-13 22:18:37,836 INFO L226 Difference]: Without dead ends: 23084 [2019-10-13 22:18:37,894 INFO L600 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 [2019-10-13 22:18:37,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23084 states. [2019-10-13 22:18:38,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23084 to 23073. [2019-10-13 22:18:38,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23073 states. [2019-10-13 22:18:39,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23073 states to 23073 states and 29351 transitions. [2019-10-13 22:18:39,726 INFO L78 Accepts]: Start accepts. Automaton has 23073 states and 29351 transitions. Word has length 162 [2019-10-13 22:18:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:39,727 INFO L462 AbstractCegarLoop]: Abstraction has 23073 states and 29351 transitions. [2019-10-13 22:18:39,727 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 23073 states and 29351 transitions. [2019-10-13 22:18:39,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-10-13 22:18:39,740 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:39,740 INFO L380 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] [2019-10-13 22:18:39,945 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:39,946 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:39,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:39,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1391945198, now seen corresponding path program 1 times [2019-10-13 22:18:39,947 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:39,947 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322519483] [2019-10-13 22:18:39,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:39,947 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:39,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:39,992 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:39,992 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [70735181] [2019-10-13 22:18:39,992 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 [2019-10-13 22:18:40,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:40,447 INFO L256 TraceCheckSpWp]: Trace formula consists of 1782 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 22:18:40,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:40,476 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 22:18:40,476 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:40,608 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 22:18:40,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322519483] [2019-10-13 22:18:40,608 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:40,608 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [70735181] [2019-10-13 22:18:40,609 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:40,609 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 22:18:40,609 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161441532] [2019-10-13 22:18:40,610 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 22:18:40,610 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:40,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 22:18:40,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 22:18:40,611 INFO L87 Difference]: Start difference. First operand 23073 states and 29351 transitions. Second operand 3 states. [2019-10-13 22:18:41,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:41,037 INFO L93 Difference]: Finished difference Result 34964 states and 45170 transitions. [2019-10-13 22:18:41,038 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 22:18:41,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-10-13 22:18:41,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:41,144 INFO L225 Difference]: With dead ends: 34964 [2019-10-13 22:18:41,144 INFO L226 Difference]: Without dead ends: 23161 [2019-10-13 22:18:41,190 INFO L600 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 [2019-10-13 22:18:41,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23161 states. [2019-10-13 22:18:41,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23161 to 23117. [2019-10-13 22:18:41,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23117 states. [2019-10-13 22:18:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23117 states to 23117 states and 29395 transitions. [2019-10-13 22:18:42,056 INFO L78 Accepts]: Start accepts. Automaton has 23117 states and 29395 transitions. Word has length 162 [2019-10-13 22:18:42,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:42,058 INFO L462 AbstractCegarLoop]: Abstraction has 23117 states and 29395 transitions. [2019-10-13 22:18:42,058 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 22:18:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand 23117 states and 29395 transitions. [2019-10-13 22:18:42,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-10-13 22:18:42,069 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:42,070 INFO L380 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] [2019-10-13 22:18:42,276 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:42,277 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:42,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:42,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1614236032, now seen corresponding path program 1 times [2019-10-13 22:18:42,277 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:42,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415824182] [2019-10-13 22:18:42,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:42,278 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:42,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:42,318 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:42,318 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591004287] [2019-10-13 22:18:42,319 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 [2019-10-13 22:18:42,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:42,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 1790 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 22:18:42,819 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 22:18:42,858 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 22:18:42,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415824182] [2019-10-13 22:18:42,998 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:42,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591004287] [2019-10-13 22:18:42,998 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:42,998 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-13 22:18:42,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30139027] [2019-10-13 22:18:42,999 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 22:18:43,000 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 22:18:43,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:18:43,000 INFO L87 Difference]: Start difference. First operand 23117 states and 29395 transitions. Second operand 8 states. [2019-10-13 22:18:43,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:18:43,930 INFO L93 Difference]: Finished difference Result 46334 states and 58920 transitions. [2019-10-13 22:18:43,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 22:18:43,931 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2019-10-13 22:18:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:18:43,998 INFO L225 Difference]: With dead ends: 46334 [2019-10-13 22:18:43,999 INFO L226 Difference]: Without dead ends: 23187 [2019-10-13 22:18:44,040 INFO L600 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 [2019-10-13 22:18:44,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23187 states. [2019-10-13 22:18:44,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23187 to 23144. [2019-10-13 22:18:44,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23144 states. [2019-10-13 22:18:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23144 states to 23144 states and 29410 transitions. [2019-10-13 22:18:44,859 INFO L78 Accepts]: Start accepts. Automaton has 23144 states and 29410 transitions. Word has length 163 [2019-10-13 22:18:44,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:18:44,859 INFO L462 AbstractCegarLoop]: Abstraction has 23144 states and 29410 transitions. [2019-10-13 22:18:44,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 22:18:44,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23144 states and 29410 transitions. [2019-10-13 22:18:44,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-10-13 22:18:44,871 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:18:44,871 INFO L380 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] [2019-10-13 22:18:45,077 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:18:45,078 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:18:45,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:18:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1221559874, now seen corresponding path program 1 times [2019-10-13 22:18:45,078 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:18:45,078 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910440691] [2019-10-13 22:18:45,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:45,078 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:18:45,079 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:18:45,115 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 22:18:45,115 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1488569167] [2019-10-13 22:18:45,116 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 [2019-10-13 22:18:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:18:45,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 1813 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 22:18:45,590 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:18:45,647 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 22:18:45,647 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:18:46,204 WARN L191 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2019-10-13 22:18:46,237 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:18:46,327 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:18:46,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 22:18:46,472 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 22:18:46,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910440691] [2019-10-13 22:18:46,473 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 22:18:46,473 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488569167] [2019-10-13 22:18:46,473 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:18:46,474 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2019-10-13 22:18:46,474 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775041003] [2019-10-13 22:18:46,474 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 22:18:46,475 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:18:46,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 22:18:46,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-10-13 22:18:46,475 INFO L87 Difference]: Start difference. First operand 23144 states and 29410 transitions. Second operand 8 states.