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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -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 0.1.24-13a467a-m [2019-10-15 00:31:21,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 00:31:21,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 00:31:21,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 00:31:21,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 00:31:21,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 00:31:21,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 00:31:21,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 00:31:21,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 00:31:21,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 00:31:21,868 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 00:31:21,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 00:31:21,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 00:31:21,878 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 00:31:21,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 00:31:21,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 00:31:21,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 00:31:21,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 00:31:21,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 00:31:21,890 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 00:31:21,892 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 00:31:21,893 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 00:31:21,895 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 00:31:21,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 00:31:21,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 00:31:21,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 00:31:21,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 00:31:21,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 00:31:21,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 00:31:21,904 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 00:31:21,904 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 00:31:21,906 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 00:31:21,907 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 00:31:21,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 00:31:21,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 00:31:21,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 00:31:21,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 00:31:21,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 00:31:21,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 00:31:21,914 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 00:31:21,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 00:31:21,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 00:31:21,930 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 00:31:21,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 00:31:21,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 00:31:21,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 00:31:21,932 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 00:31:21,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 00:31:21,932 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 00:31:21,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 00:31:21,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 00:31:21,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 00:31:21,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 00:31:21,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 00:31:21,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 00:31:21,934 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 00:31:21,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 00:31:21,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 00:31:21,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 00:31:21,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 00:31:21,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 00:31:21,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 00:31:21,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 00:31:21,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:31:21,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 00:31:21,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 00:31:21,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 00:31:21,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 00:31:21,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 00:31:21,936 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 00:31:21,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 00:31:22,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 00:31:22,266 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 00:31:22,269 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 00:31:22,271 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 00:31:22,271 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 00:31:22,272 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-15 00:31:22,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5c8b62e/10c68710a74045f3b7caf4805fca8d71/FLAG38bdc5bd5 [2019-10-15 00:31:23,104 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 00:31:23,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-15 00:31:23,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5c8b62e/10c68710a74045f3b7caf4805fca8d71/FLAG38bdc5bd5 [2019-10-15 00:31:23,160 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a5c8b62e/10c68710a74045f3b7caf4805fca8d71 [2019-10-15 00:31:23,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 00:31:23,172 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 00:31:23,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 00:31:23,173 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 00:31:23,176 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 00:31:23,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:31:23" (1/1) ... [2019-10-15 00:31:23,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b4ba078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:23, skipping insertion in model container [2019-10-15 00:31:23,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 12:31:23" (1/1) ... [2019-10-15 00:31:23,188 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 00:31:23,312 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 00:31:25,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:31:25,127 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 00:31:25,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 00:31:25,657 INFO L192 MainTranslator]: Completed translation [2019-10-15 00:31:25,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25 WrapperNode [2019-10-15 00:31:25,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 00:31:25,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 00:31:25,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 00:31:25,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 00:31:25,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,751 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... [2019-10-15 00:31:25,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 00:31:25,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 00:31:25,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 00:31:25,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 00:31:25,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 00:31:25,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-15 00:31:25,983 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-15 00:31:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-15 00:31:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-15 00:31:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-15 00:31:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-15 00:31:25,984 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-15 00:31:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-15 00:31:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 00:31:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 00:31:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-15 00:31:25,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-15 00:31:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-15 00:31:25,986 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-15 00:31:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 00:31:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 00:31:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 00:31:25,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-15 00:31:25,990 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-15 00:31:25,991 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-15 00:31:25,992 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-10-15 00:31:25,993 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-10-15 00:31:25,994 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-10-15 00:31:25,995 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-10-15 00:31:25,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-10-15 00:31:25,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-10-15 00:31:25,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-10-15 00:31:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-15 00:31:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-15 00:31:26,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-15 00:31:26,002 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-10-15 00:31:26,003 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-15 00:31:26,004 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-15 00:31:26,005 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-10-15 00:31:26,006 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 00:31:26,007 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 00:31:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 00:31:26,008 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 00:31:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 00:31:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-15 00:31:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-15 00:31:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-15 00:31:26,008 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-15 00:31:26,009 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-15 00:31:26,010 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 00:31:26,011 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-15 00:31:26,012 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-10-15 00:31:26,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-15 00:31:26,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 00:31:26,015 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 00:31:26,016 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 00:31:26,017 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-10-15 00:31:26,018 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-15 00:31:26,019 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-15 00:31:26,020 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-15 00:31:26,021 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-10-15 00:31:26,022 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-10-15 00:31:26,023 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-10-15 00:31:26,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 00:31:26,025 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-10-15 00:31:26,026 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-10-15 00:31:26,027 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-10-15 00:31:26,028 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-10-15 00:31:26,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-15 00:31:26,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-15 00:31:26,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 00:31:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 00:31:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 00:31:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 00:31:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 00:31:26,989 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 00:31:28,960 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 00:31:28,960 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 00:31:28,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:31:28 BoogieIcfgContainer [2019-10-15 00:31:28,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 00:31:28,967 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 00:31:28,967 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 00:31:28,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 00:31:28,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 12:31:23" (1/3) ... [2019-10-15 00:31:28,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c88d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:31:28, skipping insertion in model container [2019-10-15 00:31:28,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 12:31:25" (2/3) ... [2019-10-15 00:31:28,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68c88d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 12:31:28, skipping insertion in model container [2019-10-15 00:31:28,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 12:31:28" (3/3) ... [2019-10-15 00:31:28,978 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 [2019-10-15 00:31:28,987 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 00:31:29,000 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 00:31:29,012 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 00:31:29,054 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 00:31:29,054 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 00:31:29,055 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 00:31:29,055 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 00:31:29,055 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 00:31:29,055 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 00:31:29,055 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 00:31:29,055 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 00:31:29,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states. [2019-10-15 00:31:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-15 00:31:29,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:29,134 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:29,136 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:29,141 INFO L82 PathProgramCache]: Analyzing trace with hash -663033153, now seen corresponding path program 1 times [2019-10-15 00:31:29,149 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:29,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429739297] [2019-10-15 00:31:29,149 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:29,149 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:29,149 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:29,693 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:29,694 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429739297] [2019-10-15 00:31:29,696 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:29,696 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 00:31:29,696 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530606525] [2019-10-15 00:31:29,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:29,704 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:29,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:29,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:29,723 INFO L87 Difference]: Start difference. First operand 1061 states. Second operand 3 states. [2019-10-15 00:31:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:30,082 INFO L93 Difference]: Finished difference Result 2934 states and 3893 transitions. [2019-10-15 00:31:30,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:30,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-15 00:31:30,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:30,126 INFO L225 Difference]: With dead ends: 2934 [2019-10-15 00:31:30,126 INFO L226 Difference]: Without dead ends: 1910 [2019-10-15 00:31:30,142 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:30,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-15 00:31:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-15 00:31:30,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-15 00:31:30,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2458 transitions. [2019-10-15 00:31:30,351 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2458 transitions. Word has length 75 [2019-10-15 00:31:30,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:30,352 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2458 transitions. [2019-10-15 00:31:30,355 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:30,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2458 transitions. [2019-10-15 00:31:30,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 00:31:30,370 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:30,370 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:30,372 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:30,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash -859275162, now seen corresponding path program 1 times [2019-10-15 00:31:30,379 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:30,379 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318616021] [2019-10-15 00:31:30,379 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:30,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:30,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:30,498 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:31:30,499 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [334316093] [2019-10-15 00:31:30,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:31,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 00:31:31,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:31,197 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:31,198 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:31,354 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318616021] [2019-10-15 00:31:31,354 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:31:31,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334316093] [2019-10-15 00:31:31,355 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:31,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-15 00:31:31,355 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549317966] [2019-10-15 00:31:31,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 00:31:31,358 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:31,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 00:31:31,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-15 00:31:31,359 INFO L87 Difference]: Start difference. First operand 1910 states and 2458 transitions. Second operand 7 states. [2019-10-15 00:31:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:34,845 INFO L93 Difference]: Finished difference Result 3796 states and 4888 transitions. [2019-10-15 00:31:34,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 00:31:34,846 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-15 00:31:34,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:34,858 INFO L225 Difference]: With dead ends: 3796 [2019-10-15 00:31:34,858 INFO L226 Difference]: Without dead ends: 1910 [2019-10-15 00:31:34,868 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-15 00:31:34,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-15 00:31:34,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-15 00:31:34,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-15 00:31:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2457 transitions. [2019-10-15 00:31:35,008 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2457 transitions. Word has length 93 [2019-10-15 00:31:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:35,010 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2457 transitions. [2019-10-15 00:31:35,010 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 00:31:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2457 transitions. [2019-10-15 00:31:35,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-15 00:31:35,016 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:35,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:35,223 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:35,223 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:35,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:35,224 INFO L82 PathProgramCache]: Analyzing trace with hash 2063884836, now seen corresponding path program 1 times [2019-10-15 00:31:35,224 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:35,224 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813780731] [2019-10-15 00:31:35,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:35,225 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:35,225 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:35,283 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:31:35,284 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199870142] [2019-10-15 00:31:35,284 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:35,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 00:31:35,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:35,824 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:35,825 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:35,960 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:35,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813780731] [2019-10-15 00:31:35,962 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:31:35,962 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199870142] [2019-10-15 00:31:35,963 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:35,963 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-15 00:31:35,964 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637845152] [2019-10-15 00:31:35,964 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 00:31:35,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:35,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 00:31:35,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 00:31:35,966 INFO L87 Difference]: Start difference. First operand 1910 states and 2457 transitions. Second operand 9 states. [2019-10-15 00:31:37,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:37,909 INFO L93 Difference]: Finished difference Result 5687 states and 7433 transitions. [2019-10-15 00:31:37,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 00:31:37,910 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-10-15 00:31:37,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:37,940 INFO L225 Difference]: With dead ends: 5687 [2019-10-15 00:31:37,941 INFO L226 Difference]: Without dead ends: 3752 [2019-10-15 00:31:37,952 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-15 00:31:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2019-10-15 00:31:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3752. [2019-10-15 00:31:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2019-10-15 00:31:38,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4913 transitions. [2019-10-15 00:31:38,268 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4913 transitions. Word has length 93 [2019-10-15 00:31:38,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:38,268 INFO L462 AbstractCegarLoop]: Abstraction has 3752 states and 4913 transitions. [2019-10-15 00:31:38,268 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 00:31:38,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4913 transitions. [2019-10-15 00:31:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-15 00:31:38,279 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:38,280 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] [2019-10-15 00:31:38,495 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:38,495 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:38,496 INFO L82 PathProgramCache]: Analyzing trace with hash 2021957923, now seen corresponding path program 1 times [2019-10-15 00:31:38,496 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:38,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048627143] [2019-10-15 00:31:38,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:38,497 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:38,498 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:38,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:38,645 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048627143] [2019-10-15 00:31:38,645 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-15 00:31:38,646 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769214731] [2019-10-15 00:31:38,646 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:39,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:39,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:31:39,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:39,138 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:39,273 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:39,274 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:39,274 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:31:39,274 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584748783] [2019-10-15 00:31:39,275 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:39,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:39,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:39,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:39,276 INFO L87 Difference]: Start difference. First operand 3752 states and 4913 transitions. Second operand 3 states. [2019-10-15 00:31:39,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:39,580 INFO L93 Difference]: Finished difference Result 10584 states and 13770 transitions. [2019-10-15 00:31:39,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:39,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-10-15 00:31:39,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:39,637 INFO L225 Difference]: With dead ends: 10584 [2019-10-15 00:31:39,637 INFO L226 Difference]: Without dead ends: 6856 [2019-10-15 00:31:39,654 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:39,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2019-10-15 00:31:40,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6844. [2019-10-15 00:31:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2019-10-15 00:31:40,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8871 transitions. [2019-10-15 00:31:40,141 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8871 transitions. Word has length 131 [2019-10-15 00:31:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:40,142 INFO L462 AbstractCegarLoop]: Abstraction has 6844 states and 8871 transitions. [2019-10-15 00:31:40,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8871 transitions. [2019-10-15 00:31:40,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-15 00:31:40,153 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:40,153 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:40,362 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:40,362 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:40,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash -760534101, now seen corresponding path program 1 times [2019-10-15 00:31:40,363 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:40,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830620793] [2019-10-15 00:31:40,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:40,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:40,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:40,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:40,523 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830620793] [2019-10-15 00:31:40,524 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-15 00:31:40,524 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420229048] [2019-10-15 00:31:40,524 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 [2019-10-15 00:31:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:40,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:31:40,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:41,012 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 00:31:41,157 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:41,157 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:31:41,158 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675190507] [2019-10-15 00:31:41,158 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:41,159 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:41,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:41,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:41,159 INFO L87 Difference]: Start difference. First operand 6844 states and 8871 transitions. Second operand 3 states. [2019-10-15 00:31:41,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:41,664 INFO L93 Difference]: Finished difference Result 18462 states and 23853 transitions. [2019-10-15 00:31:41,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:41,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-10-15 00:31:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:41,744 INFO L225 Difference]: With dead ends: 18462 [2019-10-15 00:31:41,745 INFO L226 Difference]: Without dead ends: 11642 [2019-10-15 00:31:41,769 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2019-10-15 00:31:42,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11552. [2019-10-15 00:31:42,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11552 states. [2019-10-15 00:31:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 14904 transitions. [2019-10-15 00:31:42,306 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 14904 transitions. Word has length 150 [2019-10-15 00:31:42,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:42,306 INFO L462 AbstractCegarLoop]: Abstraction has 11552 states and 14904 transitions. [2019-10-15 00:31:42,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:42,307 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 14904 transitions. [2019-10-15 00:31:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 00:31:42,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:42,325 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:42,533 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:42,533 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:42,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:42,534 INFO L82 PathProgramCache]: Analyzing trace with hash 674163483, now seen corresponding path program 1 times [2019-10-15 00:31:42,534 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:42,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288531507] [2019-10-15 00:31:42,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:42,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:42,535 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:42,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288531507] [2019-10-15 00:31:42,723 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-15 00:31:42,723 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598395001] [2019-10-15 00:31:42,724 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 [2019-10-15 00:31:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:43,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:31:43,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:44,088 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-15 00:31:44,088 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:44,242 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-15 00:31:44,242 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:44,243 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:31:44,243 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377299373] [2019-10-15 00:31:44,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:44,244 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:44,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:44,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:44,245 INFO L87 Difference]: Start difference. First operand 11552 states and 14904 transitions. Second operand 3 states. [2019-10-15 00:31:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:44,842 INFO L93 Difference]: Finished difference Result 28646 states and 36823 transitions. [2019-10-15 00:31:44,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:44,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 00:31:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:44,957 INFO L225 Difference]: With dead ends: 28646 [2019-10-15 00:31:44,957 INFO L226 Difference]: Without dead ends: 17118 [2019-10-15 00:31:45,003 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:45,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17118 states. [2019-10-15 00:31:45,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17118 to 17102. [2019-10-15 00:31:45,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17102 states. [2019-10-15 00:31:45,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17102 states to 17102 states and 21917 transitions. [2019-10-15 00:31:45,913 INFO L78 Accepts]: Start accepts. Automaton has 17102 states and 21917 transitions. Word has length 171 [2019-10-15 00:31:45,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:45,914 INFO L462 AbstractCegarLoop]: Abstraction has 17102 states and 21917 transitions. [2019-10-15 00:31:45,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:45,914 INFO L276 IsEmpty]: Start isEmpty. Operand 17102 states and 21917 transitions. [2019-10-15 00:31:45,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 00:31:45,928 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:45,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:46,136 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:46,136 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:46,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:46,137 INFO L82 PathProgramCache]: Analyzing trace with hash -2031721131, now seen corresponding path program 1 times [2019-10-15 00:31:46,137 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:46,137 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456177576] [2019-10-15 00:31:46,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:46,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:46,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:46,178 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:31:46,178 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243589590] [2019-10-15 00:31:46,178 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 [2019-10-15 00:31:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:46,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:31:46,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:46,703 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-15 00:31:46,703 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-15 00:31:46,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456177576] [2019-10-15 00:31:46,836 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:31:46,836 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243589590] [2019-10-15 00:31:46,837 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:46,837 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:31:46,837 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603802280] [2019-10-15 00:31:46,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:46,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:46,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:46,839 INFO L87 Difference]: Start difference. First operand 17102 states and 21917 transitions. Second operand 3 states. [2019-10-15 00:31:47,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:47,698 INFO L93 Difference]: Finished difference Result 43932 states and 56277 transitions. [2019-10-15 00:31:47,699 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:47,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-15 00:31:47,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:47,821 INFO L225 Difference]: With dead ends: 43932 [2019-10-15 00:31:47,821 INFO L226 Difference]: Without dead ends: 26863 [2019-10-15 00:31:47,894 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2019-10-15 00:31:48,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 26851. [2019-10-15 00:31:48,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26851 states. [2019-10-15 00:31:48,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26851 states to 26851 states and 34179 transitions. [2019-10-15 00:31:48,863 INFO L78 Accepts]: Start accepts. Automaton has 26851 states and 34179 transitions. Word has length 179 [2019-10-15 00:31:48,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:48,864 INFO L462 AbstractCegarLoop]: Abstraction has 26851 states and 34179 transitions. [2019-10-15 00:31:48,864 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:48,864 INFO L276 IsEmpty]: Start isEmpty. Operand 26851 states and 34179 transitions. [2019-10-15 00:31:48,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-15 00:31:48,878 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:48,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:49,086 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:49,086 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:49,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash -501094365, now seen corresponding path program 1 times [2019-10-15 00:31:49,087 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:49,087 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107396973] [2019-10-15 00:31:49,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:49,087 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:49,088 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:49,127 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:31:49,127 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2005576298] [2019-10-15 00:31:49,128 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 [2019-10-15 00:31:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:49,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 00:31:49,655 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 00:31:49,955 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 00:31:49,955 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 00:31:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-15 00:31:50,092 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107396973] [2019-10-15 00:31:50,093 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 00:31:50,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005576298] [2019-10-15 00:31:50,093 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 00:31:50,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-15 00:31:50,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430431662] [2019-10-15 00:31:50,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 00:31:50,095 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 00:31:50,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 00:31:50,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:50,095 INFO L87 Difference]: Start difference. First operand 26851 states and 34179 transitions. Second operand 3 states. [2019-10-15 00:31:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 00:31:50,552 INFO L93 Difference]: Finished difference Result 40736 states and 52517 transitions. [2019-10-15 00:31:50,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 00:31:50,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-15 00:31:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 00:31:50,689 INFO L225 Difference]: With dead ends: 40736 [2019-10-15 00:31:50,689 INFO L226 Difference]: Without dead ends: 26939 [2019-10-15 00:31:50,736 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 00:31:50,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26939 states. [2019-10-15 00:31:52,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26939 to 26895. [2019-10-15 00:31:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26895 states. [2019-10-15 00:31:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26895 states to 26895 states and 34223 transitions. [2019-10-15 00:31:52,749 INFO L78 Accepts]: Start accepts. Automaton has 26895 states and 34223 transitions. Word has length 179 [2019-10-15 00:31:52,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 00:31:52,750 INFO L462 AbstractCegarLoop]: Abstraction has 26895 states and 34223 transitions. [2019-10-15 00:31:52,750 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 00:31:52,750 INFO L276 IsEmpty]: Start isEmpty. Operand 26895 states and 34223 transitions. [2019-10-15 00:31:52,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-15 00:31:52,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 00:31:52,772 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 00:31:52,986 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 00:31:52,986 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 00:31:52,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 00:31:52,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1788589124, now seen corresponding path program 1 times [2019-10-15 00:31:52,987 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 00:31:52,987 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763785736] [2019-10-15 00:31:52,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:52,987 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 00:31:52,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 00:31:53,035 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 00:31:53,036 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390622386] [2019-10-15 00:31:53,036 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 [2019-10-15 00:31:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 00:31:53,526 INFO L256 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 00:31:53,534 INFO L279 TraceCheckSpWp]: Computing forward predicates...