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-f4eb214f-m [2019-10-13 20:32:22,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 20:32:22,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 20:32:22,269 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 20:32:22,269 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 20:32:22,271 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 20:32:22,273 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 20:32:22,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 20:32:22,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 20:32:22,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 20:32:22,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 20:32:22,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 20:32:22,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 20:32:22,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 20:32:22,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 20:32:22,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 20:32:22,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 20:32:22,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 20:32:22,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 20:32:22,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 20:32:22,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 20:32:22,315 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 20:32:22,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 20:32:22,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 20:32:22,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 20:32:22,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 20:32:22,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 20:32:22,323 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 20:32:22,324 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 20:32:22,325 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 20:32:22,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 20:32:22,326 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 20:32:22,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 20:32:22,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 20:32:22,330 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 20:32:22,331 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 20:32:22,331 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 20:32:22,332 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 20:32:22,332 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 20:32:22,333 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 20:32:22,334 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 20:32:22,335 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 20:32:22,370 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 20:32:22,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 20:32:22,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 20:32:22,375 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 20:32:22,376 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 20:32:22,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 20:32:22,376 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 20:32:22,376 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 20:32:22,377 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 20:32:22,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 20:32:22,378 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 20:32:22,378 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 20:32:22,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 20:32:22,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 20:32:22,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 20:32:22,382 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 20:32:22,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:32:22,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 20:32:22,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 20:32:22,383 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 20:32:22,383 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 20:32:22,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 20:32:22,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 20:32:22,384 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 [2019-10-13 20:32:22,671 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 20:32:22,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 20:32:22,690 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 20:32:22,692 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 20:32:22,692 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 20:32:22,693 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-13 20:32:22,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3310961ac/6e86e4e043a9423893814fdce43d0576/FLAGa91aca8f8 [2019-10-13 20:32:23,722 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 20:32:23,724 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-13 20:32:23,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3310961ac/6e86e4e043a9423893814fdce43d0576/FLAGa91aca8f8 [2019-10-13 20:32:24,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3310961ac/6e86e4e043a9423893814fdce43d0576 [2019-10-13 20:32:24,132 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 20:32:24,134 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 20:32:24,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 20:32:24,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 20:32:24,139 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 20:32:24,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:32:24" (1/1) ... [2019-10-13 20:32:24,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ced689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:24, skipping insertion in model container [2019-10-13 20:32:24,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:32:24" (1/1) ... [2019-10-13 20:32:24,152 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 20:32:24,274 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 20:32:26,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:32:26,155 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 20:32:26,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 20:32:26,711 INFO L192 MainTranslator]: Completed translation [2019-10-13 20:32:26,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26 WrapperNode [2019-10-13 20:32:26,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 20:32:26,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 20:32:26,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 20:32:26,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 20:32:26,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,951 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... [2019-10-13 20:32:26,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 20:32:26,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 20:32:26,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 20:32:26,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 20:32:26,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 20:32:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 20:32:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 20:32:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 20:32:27,091 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-10-13 20:32:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-10-13 20:32:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-10-13 20:32:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-10-13 20:32:27,092 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-10-13 20:32:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 20:32:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-10-13 20:32:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-10-13 20:32:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-10-13 20:32:27,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-10-13 20:32:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 20:32:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 20:32:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-10-13 20:32:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-10-13 20:32:27,094 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-10-13 20:32:27,095 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-10-13 20:32:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 20:32:27,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 20:32:27,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-10-13 20:32:27,099 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-10-13 20:32:27,100 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-10-13 20:32:27,101 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-10-13 20:32:27,102 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-10-13 20:32:27,103 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-10-13 20:32:27,104 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 20:32:27,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-10-13 20:32:27,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-10-13 20:32:27,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-10-13 20:32:27,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-13 20:32:27,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-13 20:32:27,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-10-13 20:32:27,111 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-10-13 20:32:27,112 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-10-13 20:32:27,113 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-10-13 20:32:27,114 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-10-13 20:32:27,115 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-10-13 20:32:27,116 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-10-13 20:32:27,117 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 20:32:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 20:32:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 20:32:27,118 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 20:32:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 20:32:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 20:32:27,118 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 20:32:27,119 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-10-13 20:32:27,120 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-10-13 20:32:27,121 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-10-13 20:32:27,122 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-13 20:32:27,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-13 20:32:27,124 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-13 20:32:27,125 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 20:32:27,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 20:32:27,127 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-10-13 20:32:27,128 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-10-13 20:32:27,129 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-10-13 20:32:27,130 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 20:32:27,131 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-10-13 20:32:27,132 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-10-13 20:32:27,133 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-10-13 20:32:27,134 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-10-13 20:32:27,135 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-10-13 20:32:27,136 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-10-13 20:32:27,137 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-10-13 20:32:27,138 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-10-13 20:32:27,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-13 20:32:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-13 20:32:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 20:32:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 20:32:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 20:32:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 20:32:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 20:32:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 20:32:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 20:32:27,964 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 20:32:30,408 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 20:32:30,408 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 20:32:30,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:30 BoogieIcfgContainer [2019-10-13 20:32:30,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 20:32:30,412 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 20:32:30,412 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 20:32:30,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 20:32:30,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:32:24" (1/3) ... [2019-10-13 20:32:30,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73960e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:30, skipping insertion in model container [2019-10-13 20:32:30,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:32:26" (2/3) ... [2019-10-13 20:32:30,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73960e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:32:30, skipping insertion in model container [2019-10-13 20:32:30,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:32:30" (3/3) ... [2019-10-13 20:32:30,421 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-10-13 20:32:30,431 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 20:32:30,446 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 20:32:30,458 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 20:32:30,503 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 20:32:30,503 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 20:32:30,503 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 20:32:30,504 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 20:32:30,504 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 20:32:30,504 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 20:32:30,504 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 20:32:30,504 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 20:32:30,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states. [2019-10-13 20:32:30,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-10-13 20:32:30,579 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:30,581 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 20:32:30,585 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:30,592 INFO L82 PathProgramCache]: Analyzing trace with hash -663033153, now seen corresponding path program 1 times [2019-10-13 20:32:30,602 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:30,603 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347342490] [2019-10-13 20:32:30,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:30,603 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:30,604 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:31,224 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:31,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347342490] [2019-10-13 20:32:31,299 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:31,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 20:32:31,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022022713] [2019-10-13 20:32:31,305 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:31,307 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:31,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:31,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:31,325 INFO L87 Difference]: Start difference. First operand 1061 states. Second operand 3 states. [2019-10-13 20:32:31,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:31,662 INFO L93 Difference]: Finished difference Result 2934 states and 3893 transitions. [2019-10-13 20:32:31,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:31,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-10-13 20:32:31,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:31,705 INFO L225 Difference]: With dead ends: 2934 [2019-10-13 20:32:31,705 INFO L226 Difference]: Without dead ends: 1910 [2019-10-13 20:32:31,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:31,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-13 20:32:31,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-13 20:32:31,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-13 20:32:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2458 transitions. [2019-10-13 20:32:31,959 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2458 transitions. Word has length 75 [2019-10-13 20:32:31,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:31,960 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2458 transitions. [2019-10-13 20:32:31,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2458 transitions. [2019-10-13 20:32:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 20:32:31,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:31,971 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] [2019-10-13 20:32:31,971 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:31,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:31,976 INFO L82 PathProgramCache]: Analyzing trace with hash -859275162, now seen corresponding path program 1 times [2019-10-13 20:32:31,976 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:31,976 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080965802] [2019-10-13 20:32:31,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:31,977 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:31,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:32,076 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:32:32,076 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1599599873] [2019-10-13 20:32:32,076 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:32,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 20:32:32,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:32,711 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:32,936 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:32,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080965802] [2019-10-13 20:32:32,937 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:32:32,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599599873] [2019-10-13 20:32:32,938 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:32,938 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-10-13 20:32:32,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981444138] [2019-10-13 20:32:32,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 20:32:32,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:32,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 20:32:32,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-10-13 20:32:32,941 INFO L87 Difference]: Start difference. First operand 1910 states and 2458 transitions. Second operand 7 states. [2019-10-13 20:32:36,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:36,075 INFO L93 Difference]: Finished difference Result 3796 states and 4888 transitions. [2019-10-13 20:32:36,075 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 20:32:36,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-10-13 20:32:36,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:36,094 INFO L225 Difference]: With dead ends: 3796 [2019-10-13 20:32:36,095 INFO L226 Difference]: Without dead ends: 1910 [2019-10-13 20:32:36,103 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 [2019-10-13 20:32:36,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-10-13 20:32:36,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-10-13 20:32:36,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-10-13 20:32:36,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2457 transitions. [2019-10-13 20:32:36,245 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2457 transitions. Word has length 93 [2019-10-13 20:32:36,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:36,247 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2457 transitions. [2019-10-13 20:32:36,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 20:32:36,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2457 transitions. [2019-10-13 20:32:36,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-10-13 20:32:36,257 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:36,257 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] [2019-10-13 20:32:36,467 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:36,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:36,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:36,467 INFO L82 PathProgramCache]: Analyzing trace with hash 2063884836, now seen corresponding path program 1 times [2019-10-13 20:32:36,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:36,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894317045] [2019-10-13 20:32:36,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:36,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:36,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:36,515 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:32:36,516 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1011298270] [2019-10-13 20:32:36,516 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:36,938 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 20:32:36,945 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:37,002 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:37,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:37,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894317045] [2019-10-13 20:32:37,127 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:32:37,127 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011298270] [2019-10-13 20:32:37,128 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:37,128 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-10-13 20:32:37,128 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058911171] [2019-10-13 20:32:37,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 20:32:37,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:37,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 20:32:37,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-13 20:32:37,130 INFO L87 Difference]: Start difference. First operand 1910 states and 2457 transitions. Second operand 9 states. [2019-10-13 20:32:38,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:38,812 INFO L93 Difference]: Finished difference Result 5687 states and 7433 transitions. [2019-10-13 20:32:38,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 20:32:38,813 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-10-13 20:32:38,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:38,842 INFO L225 Difference]: With dead ends: 5687 [2019-10-13 20:32:38,843 INFO L226 Difference]: Without dead ends: 3752 [2019-10-13 20:32:38,856 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2019-10-13 20:32:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2019-10-13 20:32:39,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3752. [2019-10-13 20:32:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2019-10-13 20:32:39,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4913 transitions. [2019-10-13 20:32:39,218 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4913 transitions. Word has length 93 [2019-10-13 20:32:39,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:39,219 INFO L462 AbstractCegarLoop]: Abstraction has 3752 states and 4913 transitions. [2019-10-13 20:32:39,219 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 20:32:39,219 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4913 transitions. [2019-10-13 20:32:39,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-10-13 20:32:39,233 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:39,233 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] [2019-10-13 20:32:39,441 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:39,441 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:39,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:39,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2021957923, now seen corresponding path program 1 times [2019-10-13 20:32:39,443 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:39,443 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391921116] [2019-10-13 20:32:39,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:39,443 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:39,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:39,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391921116] [2019-10-13 20:32:39,641 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 20:32:39,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426868297] [2019-10-13 20:32:39,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:40,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:40,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 20:32:40,057 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:40,083 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:40,083 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:40,200 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:40,200 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:40,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:32:40,201 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678467513] [2019-10-13 20:32:40,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:40,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:40,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:40,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:40,203 INFO L87 Difference]: Start difference. First operand 3752 states and 4913 transitions. Second operand 3 states. [2019-10-13 20:32:40,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:40,496 INFO L93 Difference]: Finished difference Result 10584 states and 13770 transitions. [2019-10-13 20:32:40,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:40,497 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-10-13 20:32:40,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:40,548 INFO L225 Difference]: With dead ends: 10584 [2019-10-13 20:32:40,549 INFO L226 Difference]: Without dead ends: 6856 [2019-10-13 20:32:40,571 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 [2019-10-13 20:32:40,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2019-10-13 20:32:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6844. [2019-10-13 20:32:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2019-10-13 20:32:41,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8871 transitions. [2019-10-13 20:32:41,085 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8871 transitions. Word has length 131 [2019-10-13 20:32:41,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:41,086 INFO L462 AbstractCegarLoop]: Abstraction has 6844 states and 8871 transitions. [2019-10-13 20:32:41,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8871 transitions. [2019-10-13 20:32:41,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-13 20:32:41,097 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:41,098 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] [2019-10-13 20:32:41,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:41,314 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:41,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:41,314 INFO L82 PathProgramCache]: Analyzing trace with hash 812756754, now seen corresponding path program 1 times [2019-10-13 20:32:41,315 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:41,315 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145454835] [2019-10-13 20:32:41,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:41,315 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:41,316 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:41,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145454835] [2019-10-13 20:32:41,484 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 20:32:41,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334015100] [2019-10-13 20:32:41,485 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:41,957 INFO L256 TraceCheckSpWp]: Trace formula consists of 1653 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 20:32:41,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:41,983 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:42,102 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-13 20:32:42,102 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:42,102 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:32:42,102 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111988497] [2019-10-13 20:32:42,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:42,103 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:42,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:42,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:42,104 INFO L87 Difference]: Start difference. First operand 6844 states and 8871 transitions. Second operand 3 states. [2019-10-13 20:32:42,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:42,486 INFO L93 Difference]: Finished difference Result 18462 states and 23853 transitions. [2019-10-13 20:32:42,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:42,487 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 145 [2019-10-13 20:32:42,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:42,568 INFO L225 Difference]: With dead ends: 18462 [2019-10-13 20:32:42,568 INFO L226 Difference]: Without dead ends: 11642 [2019-10-13 20:32:42,599 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:42,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2019-10-13 20:32:43,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11552. [2019-10-13 20:32:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11552 states. [2019-10-13 20:32:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 14904 transitions. [2019-10-13 20:32:43,209 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 14904 transitions. Word has length 145 [2019-10-13 20:32:43,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:43,210 INFO L462 AbstractCegarLoop]: Abstraction has 11552 states and 14904 transitions. [2019-10-13 20:32:43,210 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:43,210 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 14904 transitions. [2019-10-13 20:32:43,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-13 20:32:43,224 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:43,224 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] [2019-10-13 20:32:43,431 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:43,431 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:43,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:43,432 INFO L82 PathProgramCache]: Analyzing trace with hash 674163483, now seen corresponding path program 1 times [2019-10-13 20:32:43,432 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:43,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848985927] [2019-10-13 20:32:43,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:43,432 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:43,432 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:43,566 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848985927] [2019-10-13 20:32:43,567 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-10-13 20:32:43,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073161732] [2019-10-13 20:32:43,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:44,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 20:32:44,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:44,037 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-10-13 20:32:44,037 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:44,189 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-10-13 20:32:44,190 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:44,190 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:32:44,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159426700] [2019-10-13 20:32:44,191 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:44,191 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:44,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:44,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:44,192 INFO L87 Difference]: Start difference. First operand 11552 states and 14904 transitions. Second operand 3 states. [2019-10-13 20:32:45,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:45,257 INFO L93 Difference]: Finished difference Result 28646 states and 36823 transitions. [2019-10-13 20:32:45,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:45,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-13 20:32:45,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:45,368 INFO L225 Difference]: With dead ends: 28646 [2019-10-13 20:32:45,368 INFO L226 Difference]: Without dead ends: 17118 [2019-10-13 20:32:45,413 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 [2019-10-13 20:32:45,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17118 states. [2019-10-13 20:32:46,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17118 to 17102. [2019-10-13 20:32:46,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17102 states. [2019-10-13 20:32:46,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17102 states to 17102 states and 21917 transitions. [2019-10-13 20:32:46,074 INFO L78 Accepts]: Start accepts. Automaton has 17102 states and 21917 transitions. Word has length 171 [2019-10-13 20:32:46,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:46,075 INFO L462 AbstractCegarLoop]: Abstraction has 17102 states and 21917 transitions. [2019-10-13 20:32:46,076 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:46,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17102 states and 21917 transitions. [2019-10-13 20:32:46,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 20:32:46,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:46,097 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] [2019-10-13 20:32:46,304 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:46,304 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:46,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:46,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2031721131, now seen corresponding path program 1 times [2019-10-13 20:32:46,305 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:46,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334550627] [2019-10-13 20:32:46,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:46,306 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:46,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:46,345 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:32:46,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1849730839] [2019-10-13 20:32:46,346 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:46,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 20:32:47,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:47,148 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-10-13 20:32:47,148 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:47,268 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-10-13 20:32:47,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334550627] [2019-10-13 20:32:47,269 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:32:47,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849730839] [2019-10-13 20:32:47,269 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:47,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:32:47,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862395056] [2019-10-13 20:32:47,270 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:47,271 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:47,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:47,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:47,271 INFO L87 Difference]: Start difference. First operand 17102 states and 21917 transitions. Second operand 3 states. [2019-10-13 20:32:48,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:48,001 INFO L93 Difference]: Finished difference Result 43932 states and 56277 transitions. [2019-10-13 20:32:48,001 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:48,002 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-13 20:32:48,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:48,168 INFO L225 Difference]: With dead ends: 43932 [2019-10-13 20:32:48,168 INFO L226 Difference]: Without dead ends: 26863 [2019-10-13 20:32:48,239 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 [2019-10-13 20:32:48,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2019-10-13 20:32:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 26851. [2019-10-13 20:32:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26851 states. [2019-10-13 20:32:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26851 states to 26851 states and 34179 transitions. [2019-10-13 20:32:50,027 INFO L78 Accepts]: Start accepts. Automaton has 26851 states and 34179 transitions. Word has length 179 [2019-10-13 20:32:50,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:50,028 INFO L462 AbstractCegarLoop]: Abstraction has 26851 states and 34179 transitions. [2019-10-13 20:32:50,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 26851 states and 34179 transitions. [2019-10-13 20:32:50,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-10-13 20:32:50,043 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:50,044 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] [2019-10-13 20:32:50,250 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:50,251 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:50,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -501094365, now seen corresponding path program 1 times [2019-10-13 20:32:50,251 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:50,251 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732100713] [2019-10-13 20:32:50,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:50,252 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:50,252 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:50,298 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:32:50,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [953592453] [2019-10-13 20:32:50,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:50,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-13 20:32:50,817 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 20:32:50,849 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:50,998 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 20:32:50,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732100713] [2019-10-13 20:32:50,999 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:32:50,999 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953592453] [2019-10-13 20:32:50,999 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:50,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-13 20:32:50,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575956482] [2019-10-13 20:32:51,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 20:32:51,003 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:51,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 20:32:51,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 20:32:51,004 INFO L87 Difference]: Start difference. First operand 26851 states and 34179 transitions. Second operand 3 states. [2019-10-13 20:32:51,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 20:32:51,661 INFO L93 Difference]: Finished difference Result 40736 states and 52517 transitions. [2019-10-13 20:32:51,661 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 20:32:51,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-10-13 20:32:51,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 20:32:51,767 INFO L225 Difference]: With dead ends: 40736 [2019-10-13 20:32:51,767 INFO L226 Difference]: Without dead ends: 26939 [2019-10-13 20:32:51,797 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 [2019-10-13 20:32:51,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26939 states. [2019-10-13 20:32:52,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26939 to 26895. [2019-10-13 20:32:52,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26895 states. [2019-10-13 20:32:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26895 states to 26895 states and 34223 transitions. [2019-10-13 20:32:52,614 INFO L78 Accepts]: Start accepts. Automaton has 26895 states and 34223 transitions. Word has length 179 [2019-10-13 20:32:52,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 20:32:52,615 INFO L462 AbstractCegarLoop]: Abstraction has 26895 states and 34223 transitions. [2019-10-13 20:32:52,615 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 20:32:52,615 INFO L276 IsEmpty]: Start isEmpty. Operand 26895 states and 34223 transitions. [2019-10-13 20:32:52,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-10-13 20:32:52,629 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 20:32:52,629 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] [2019-10-13 20:32:52,836 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:52,836 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 20:32:52,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 20:32:52,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1788589124, now seen corresponding path program 1 times [2019-10-13 20:32:52,837 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 20:32:52,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476245169] [2019-10-13 20:32:52,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:52,838 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 20:32:52,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 20:32:52,876 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 20:32:52,876 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559410662] [2019-10-13 20:32:52,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 20:32:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 20:32:53,400 INFO L256 TraceCheckSpWp]: Trace formula consists of 1810 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-13 20:32:53,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 20:32:53,454 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2019-10-13 20:32:53,455 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 20:32:53,857 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-10-13 20:32:53,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476245169] [2019-10-13 20:32:53,858 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 20:32:53,858 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559410662] [2019-10-13 20:32:53,858 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 20:32:53,858 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-13 20:32:53,859 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364253917] [2019-10-13 20:32:53,859 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 20:32:53,859 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 20:32:53,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 20:32:53,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 20:32:53,860 INFO L87 Difference]: Start difference. First operand 26895 states and 34223 transitions. Second operand 8 states.