/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --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-fb55353 [2019-11-06 23:34:44,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 23:34:44,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 23:34:44,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 23:34:44,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 23:34:44,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 23:34:44,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 23:34:44,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 23:34:44,161 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 23:34:44,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 23:34:44,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 23:34:44,168 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 23:34:44,169 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 23:34:44,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 23:34:44,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 23:34:44,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 23:34:44,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 23:34:44,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 23:34:44,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 23:34:44,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 23:34:44,184 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 23:34:44,188 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 23:34:44,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 23:34:44,192 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 23:34:44,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 23:34:44,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 23:34:44,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 23:34:44,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 23:34:44,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 23:34:44,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 23:34:44,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 23:34:44,200 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 23:34:44,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 23:34:44,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 23:34:44,203 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 23:34:44,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 23:34:44,204 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 23:34:44,204 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 23:34:44,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 23:34:44,206 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 23:34:44,206 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 23:34:44,207 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 23:34:44,240 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 23:34:44,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 23:34:44,241 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 23:34:44,241 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 23:34:44,242 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 23:34:44,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 23:34:44,242 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 23:34:44,242 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 23:34:44,242 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 23:34:44,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 23:34:44,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 23:34:44,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 23:34:44,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 23:34:44,247 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 23:34:44,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 23:34:44,247 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 23:34:44,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 23:34:44,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 23:34:44,248 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 23:34:44,248 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 23:34:44,248 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 23:34:44,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:34:44,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 23:34:44,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 23:34:44,249 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 23:34:44,249 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 23:34:44,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 23:34:44,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 23:34:44,249 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 [2019-11-06 23:34:44,509 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 23:34:44,525 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 23:34:44,529 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 23:34:44,531 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 23:34:44,531 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 23:34:44,532 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-06 23:34:44,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f47631b/74c5226d3ed94c3dbad526c33a7253fb/FLAG980a17580 [2019-11-06 23:34:45,437 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 23:34:45,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-06 23:34:45,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f47631b/74c5226d3ed94c3dbad526c33a7253fb/FLAG980a17580 [2019-11-06 23:34:45,962 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8f47631b/74c5226d3ed94c3dbad526c33a7253fb [2019-11-06 23:34:45,973 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 23:34:45,975 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 23:34:45,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 23:34:45,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 23:34:45,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 23:34:45,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:34:45" (1/1) ... [2019-11-06 23:34:45,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@446edcd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:45, skipping insertion in model container [2019-11-06 23:34:45,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:34:45" (1/1) ... [2019-11-06 23:34:45,992 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 23:34:46,142 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 23:34:48,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:34:48,228 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 23:34:48,616 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 23:34:48,952 INFO L192 MainTranslator]: Completed translation [2019-11-06 23:34:48,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48 WrapperNode [2019-11-06 23:34:48,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 23:34:48,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 23:34:48,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 23:34:48,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 23:34:48,970 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:48,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,048 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... [2019-11-06 23:34:49,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 23:34:49,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 23:34:49,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 23:34:49,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 23:34:49,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 23:34:49,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 23:34:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 23:34:49,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-06 23:34:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2019-11-06 23:34:49,379 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2019-11-06 23:34:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2019-11-06 23:34:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2019-11-06 23:34:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2019-11-06 23:34:49,382 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-11-06 23:34:49,384 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2019-11-06 23:34:49,384 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2019-11-06 23:34:49,384 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2019-11-06 23:34:49,385 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2019-11-06 23:34:49,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 23:34:49,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 23:34:49,387 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc_array [2019-11-06 23:34:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure kcalloc [2019-11-06 23:34:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2019-11-06 23:34:49,393 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 23:34:49,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure compat_ptr [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2019-11-06 23:34:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2019-11-06 23:34:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_start_queue [2019-11-06 23:34:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_wake_queue [2019-11-06 23:34:49,398 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2019-11-06 23:34:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_stop_queue [2019-11-06 23:34:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2019-11-06 23:34:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_queue_stopped [2019-11-06 23:34:49,399 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_type_trans [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_alloc [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_free [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_change_mtu [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_lock [2019-11-06 23:34:49,400 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unlock [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_bump [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_encaps [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_write_wakeup [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_timeout [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_xmit [2019-11-06 23:34:49,401 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_indication [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_data_transmit [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_connected [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_disconnected [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close [2019-11-06 23:34:49,402 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_receive_buf [2019-11-06 23:34:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_tty [2019-11-06 23:34:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_close_tty [2019-11-06 23:34:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_esc [2019-11-06 23:34:49,403 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_unesc [2019-11-06 23:34:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_ioctl [2019-11-06 23:34:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_compat_ioctl [2019-11-06 23:34:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_open_dev [2019-11-06 23:34:49,404 INFO L138 BoogieDeclarations]: Found implementation of procedure x25_asy_setup [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure init_x25_asy [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure exit_x25_asy [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_target_type_1 [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_lapb_register_struct_3 [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_net_device_ops_2 [2019-11-06 23:34:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 23:34:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_register_netdev_12 [2019-11-06 23:34:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_13 [2019-11-06 23:34:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb_14 [2019-11-06 23:34:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_15 [2019-11-06 23:34:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_16 [2019-11-06 23:34:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_17 [2019-11-06 23:34:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_18 [2019-11-06 23:34:49,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_19 [2019-11-06 23:34:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_20 [2019-11-06 23:34:49,410 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_21 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_22 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_24 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_26 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_netdev_27 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_netdev_28 [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-11-06 23:34:49,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-11-06 23:34:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-11-06 23:34:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __copy_to_user_overflow [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __netif_schedule [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2019-11-06 23:34:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock [2019-11-06 23:34:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_bh [2019-11-06 23:34:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock [2019-11-06 23:34:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_unlock_bh [2019-11-06 23:34:49,415 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_netdev_mqs [2019-11-06 23:34:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_close [2019-11-06 23:34:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2019-11-06 23:34:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_connect_request [2019-11-06 23:34:49,416 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_received [2019-11-06 23:34:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_data_request [2019-11-06 23:34:49,417 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_disconnect_request [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_register [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure lapb_unregister [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_init_2 [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ndo_uninit_2 [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_3 [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2019-11-06 23:34:49,418 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_err [2019-11-06 23:34:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_warn [2019-11-06 23:34:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 23:34:49,419 INFO L138 BoogieDeclarations]: Found implementation of procedure register_netdev [2019-11-06 23:34:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2019-11-06 23:34:49,420 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2019-11-06 23:34:49,421 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-11-06 23:34:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-11-06 23:34:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-11-06 23:34:49,424 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_chars_in_buffer [2019-11-06 23:34:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2019-11-06 23:34:49,425 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2019-11-06 23:34:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_ldisc_flush [2019-11-06 23:34:49,426 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_mode_ioctl [2019-11-06 23:34:49,432 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_register_ldisc [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_ldisc [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 23:34:49,433 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 23:34:49,435 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-06 23:34:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 23:34:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 23:34:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2019-11-06 23:34:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2019-11-06 23:34:49,435 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-11-06 23:34:49,436 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_bh [2019-11-06 23:34:49,437 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_unlock_bh [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2019-11-06 23:34:49,438 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc_array [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure kcalloc [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2019-11-06 23:34:49,439 INFO L130 BoogieDeclarations]: Found specification of procedure __copy_to_user_overflow [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_15 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_17 [2019-11-06 23:34:49,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_18 [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_19 [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_20 [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_22 [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-11-06 23:34:49,441 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb_14 [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-11-06 23:34:49,442 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 23:34:49,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 23:34:49,444 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_target_type_1 [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_lapb_register_struct_3 [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_net_device_ops_2 [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure tty_chars_in_buffer [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure tty_ldisc_flush [2019-11-06 23:34:49,445 INFO L130 BoogieDeclarations]: Found specification of procedure tty_mode_ioctl [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure tty_register_ldisc [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_ldisc [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure compat_ptr [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure dev_close [2019-11-06 23:34:49,446 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_13 [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_netdev_28 [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure __netif_schedule [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_start_queue [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_wake_queue [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2019-11-06 23:34:49,447 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_stop_queue [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_queue_stopped [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_16 [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_21 [2019-11-06 23:34:49,448 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_24 [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_26 [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_netdev_mqs [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure register_netdev [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_register_netdev_12 [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_netdev_27 [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_err [2019-11-06 23:34:49,449 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_warn [2019-11-06 23:34:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_register [2019-11-06 23:34:49,450 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_unregister [2019-11-06 23:34:49,451 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_connect_request [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_disconnect_request [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_request [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure lapb_data_received [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure x25_type_trans [2019-11-06 23:34:49,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 23:34:49,456 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_esc [2019-11-06 23:34:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unesc [2019-11-06 23:34:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_setup [2019-11-06 23:34:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_alloc [2019-11-06 23:34:49,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 23:34:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_free [2019-11-06 23:34:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-06 23:34:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_change_mtu [2019-11-06 23:34:49,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_lock [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_unlock [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_bump [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_encaps [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_write_wakeup [2019-11-06 23:34:49,461 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_timeout [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_xmit [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_indication [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_data_transmit [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_connected [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_disconnected [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_receive_buf [2019-11-06 23:34:49,462 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_tty [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_close_tty [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_ioctl [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_compat_ioctl [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure x25_asy_open_dev [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure init_x25_asy [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit_x25_asy [2019-11-06 23:34:49,463 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_init_2 [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ndo_uninit_2 [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_3 [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-06 23:34:49,464 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-11-06 23:34:49,465 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-06 23:34:49,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-06 23:34:49,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-06 23:34:50,527 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 23:34:52,979 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 23:34:52,980 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-06 23:34:52,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:34:52 BoogieIcfgContainer [2019-11-06 23:34:52,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 23:34:52,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 23:34:52,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 23:34:52,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 23:34:52,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:34:45" (1/3) ... [2019-11-06 23:34:52,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4153c635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:34:52, skipping insertion in model container [2019-11-06 23:34:52,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:34:48" (2/3) ... [2019-11-06 23:34:52,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4153c635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:34:52, skipping insertion in model container [2019-11-06 23:34:52,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:34:52" (3/3) ... [2019-11-06 23:34:52,991 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--wan--x25_asy.ko-entry_point.cil.out.i [2019-11-06 23:34:53,001 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 23:34:53,014 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 23:34:53,027 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 23:34:53,064 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 23:34:53,064 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 23:34:53,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 23:34:53,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 23:34:53,064 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 23:34:53,064 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 23:34:53,064 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 23:34:53,065 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 23:34:53,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states. [2019-11-06 23:34:53,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2019-11-06 23:34:53,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:34:53,144 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:34:53,146 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:34:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:34:53,156 INFO L82 PathProgramCache]: Analyzing trace with hash -663033153, now seen corresponding path program 1 times [2019-11-06 23:34:53,168 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:34:53,168 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137693642] [2019-11-06 23:34:53,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:34:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:34:53,803 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:34:53,804 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137693642] [2019-11-06 23:34:53,805 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:34:53,805 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-06 23:34:53,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906327456] [2019-11-06 23:34:53,813 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:34:53,814 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:34:53,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:34:53,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:34:53,832 INFO L87 Difference]: Start difference. First operand 1061 states. Second operand 3 states. [2019-11-06 23:34:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:34:54,177 INFO L93 Difference]: Finished difference Result 2934 states and 3893 transitions. [2019-11-06 23:34:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:34:54,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2019-11-06 23:34:54,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:34:54,220 INFO L225 Difference]: With dead ends: 2934 [2019-11-06 23:34:54,220 INFO L226 Difference]: Without dead ends: 1910 [2019-11-06 23:34:54,236 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:34:54,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-11-06 23:34:54,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-11-06 23:34:54,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-11-06 23:34:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2458 transitions. [2019-11-06 23:34:54,565 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2458 transitions. Word has length 75 [2019-11-06 23:34:54,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:34:54,566 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2458 transitions. [2019-11-06 23:34:54,566 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:34:54,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2458 transitions. [2019-11-06 23:34:54,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 23:34:54,579 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:34:54,580 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:34:54,581 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:34:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:34:54,582 INFO L82 PathProgramCache]: Analyzing trace with hash -859275162, now seen corresponding path program 1 times [2019-11-06 23:34:54,583 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:34:54,583 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374999337] [2019-11-06 23:34:54,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:34:54,676 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:34:54,676 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557653071] [2019-11-06 23:34:54,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:34:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:34:55,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 23:34:55,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:34:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:34:55,306 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:34:55,551 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:34:55,552 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374999337] [2019-11-06 23:34:55,552 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:34:55,552 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557653071] [2019-11-06 23:34:55,552 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:34:55,553 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-06 23:34:55,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337872930] [2019-11-06 23:34:55,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 23:34:55,557 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:34:55,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 23:34:55,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-11-06 23:34:55,558 INFO L87 Difference]: Start difference. First operand 1910 states and 2458 transitions. Second operand 7 states. [2019-11-06 23:34:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:34:59,035 INFO L93 Difference]: Finished difference Result 3796 states and 4888 transitions. [2019-11-06 23:34:59,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-06 23:34:59,035 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2019-11-06 23:34:59,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:34:59,047 INFO L225 Difference]: With dead ends: 3796 [2019-11-06 23:34:59,048 INFO L226 Difference]: Without dead ends: 1910 [2019-11-06 23:34:59,055 INFO L630 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 [2019-11-06 23:34:59,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2019-11-06 23:34:59,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1910. [2019-11-06 23:34:59,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1910 states. [2019-11-06 23:34:59,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1910 states to 1910 states and 2457 transitions. [2019-11-06 23:34:59,153 INFO L78 Accepts]: Start accepts. Automaton has 1910 states and 2457 transitions. Word has length 93 [2019-11-06 23:34:59,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:34:59,154 INFO L462 AbstractCegarLoop]: Abstraction has 1910 states and 2457 transitions. [2019-11-06 23:34:59,154 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 23:34:59,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1910 states and 2457 transitions. [2019-11-06 23:34:59,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2019-11-06 23:34:59,159 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:34:59,159 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:34:59,366 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:34:59,367 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:34:59,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:34:59,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2063884836, now seen corresponding path program 1 times [2019-11-06 23:34:59,368 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:34:59,368 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642905588] [2019-11-06 23:34:59,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:34:59,439 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:34:59,439 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210594087] [2019-11-06 23:34:59,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:34:59,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:34:59,960 INFO L256 TraceCheckSpWp]: Trace formula consists of 1437 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-06 23:34:59,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:00,042 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:00,203 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:00,203 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642905588] [2019-11-06 23:35:00,204 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:35:00,204 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210594087] [2019-11-06 23:35:00,205 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:00,205 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2019-11-06 23:35:00,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332967246] [2019-11-06 23:35:00,207 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 23:35:00,207 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:00,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 23:35:00,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-06 23:35:00,209 INFO L87 Difference]: Start difference. First operand 1910 states and 2457 transitions. Second operand 9 states. [2019-11-06 23:35:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:02,258 INFO L93 Difference]: Finished difference Result 5687 states and 7433 transitions. [2019-11-06 23:35:02,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 23:35:02,258 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 93 [2019-11-06 23:35:02,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:02,288 INFO L225 Difference]: With dead ends: 5687 [2019-11-06 23:35:02,288 INFO L226 Difference]: Without dead ends: 3752 [2019-11-06 23:35:02,300 INFO L630 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 [2019-11-06 23:35:02,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3752 states. [2019-11-06 23:35:02,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3752 to 3752. [2019-11-06 23:35:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3752 states. [2019-11-06 23:35:02,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3752 states to 3752 states and 4913 transitions. [2019-11-06 23:35:02,557 INFO L78 Accepts]: Start accepts. Automaton has 3752 states and 4913 transitions. Word has length 93 [2019-11-06 23:35:02,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:02,558 INFO L462 AbstractCegarLoop]: Abstraction has 3752 states and 4913 transitions. [2019-11-06 23:35:02,558 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-06 23:35:02,558 INFO L276 IsEmpty]: Start isEmpty. Operand 3752 states and 4913 transitions. [2019-11-06 23:35:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-11-06 23:35:02,573 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:35:02,573 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:35:02,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:02,783 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:35:02,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:35:02,784 INFO L82 PathProgramCache]: Analyzing trace with hash 2021957923, now seen corresponding path program 1 times [2019-11-06 23:35:02,784 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:35:02,784 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047622476] [2019-11-06 23:35:02,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:35:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:02,987 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047622476] [2019-11-06 23:35:02,987 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-06 23:35:02,988 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [722079464] [2019-11-06 23:35:02,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:03,423 INFO L256 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 23:35:03,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:03,512 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:03,512 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:03,634 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:03,635 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:03,635 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:35:03,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227012793] [2019-11-06 23:35:03,636 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:35:03,636 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:03,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:35:03,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:03,637 INFO L87 Difference]: Start difference. First operand 3752 states and 4913 transitions. Second operand 3 states. [2019-11-06 23:35:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:03,943 INFO L93 Difference]: Finished difference Result 10584 states and 13770 transitions. [2019-11-06 23:35:03,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:35:03,944 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 131 [2019-11-06 23:35:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:03,989 INFO L225 Difference]: With dead ends: 10584 [2019-11-06 23:35:03,989 INFO L226 Difference]: Without dead ends: 6856 [2019-11-06 23:35:04,004 INFO L630 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 [2019-11-06 23:35:04,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6856 states. [2019-11-06 23:35:04,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6856 to 6844. [2019-11-06 23:35:04,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6844 states. [2019-11-06 23:35:04,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6844 states to 6844 states and 8871 transitions. [2019-11-06 23:35:04,318 INFO L78 Accepts]: Start accepts. Automaton has 6844 states and 8871 transitions. Word has length 131 [2019-11-06 23:35:04,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:04,318 INFO L462 AbstractCegarLoop]: Abstraction has 6844 states and 8871 transitions. [2019-11-06 23:35:04,318 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:35:04,319 INFO L276 IsEmpty]: Start isEmpty. Operand 6844 states and 8871 transitions. [2019-11-06 23:35:04,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-11-06 23:35:04,330 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:35:04,331 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:35:04,538 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:04,538 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:35:04,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:35:04,538 INFO L82 PathProgramCache]: Analyzing trace with hash -760534101, now seen corresponding path program 1 times [2019-11-06 23:35:04,539 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:35:04,540 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895323492] [2019-11-06 23:35:04,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:35:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:04,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895323492] [2019-11-06 23:35:04,737 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-06 23:35:04,737 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928459328] [2019-11-06 23:35:04,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:05,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 1668 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 23:35:05,297 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:05,321 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:05,322 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:05,444 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-11-06 23:35:05,444 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:05,444 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:35:05,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416618991] [2019-11-06 23:35:05,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:35:05,445 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:05,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:35:05,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:05,446 INFO L87 Difference]: Start difference. First operand 6844 states and 8871 transitions. Second operand 3 states. [2019-11-06 23:35:05,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:05,779 INFO L93 Difference]: Finished difference Result 18462 states and 23853 transitions. [2019-11-06 23:35:05,780 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:35:05,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2019-11-06 23:35:05,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:05,848 INFO L225 Difference]: With dead ends: 18462 [2019-11-06 23:35:05,848 INFO L226 Difference]: Without dead ends: 11642 [2019-11-06 23:35:05,874 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 298 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11642 states. [2019-11-06 23:35:07,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11642 to 11552. [2019-11-06 23:35:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11552 states. [2019-11-06 23:35:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11552 states to 11552 states and 14904 transitions. [2019-11-06 23:35:07,191 INFO L78 Accepts]: Start accepts. Automaton has 11552 states and 14904 transitions. Word has length 150 [2019-11-06 23:35:07,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:07,191 INFO L462 AbstractCegarLoop]: Abstraction has 11552 states and 14904 transitions. [2019-11-06 23:35:07,192 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:35:07,192 INFO L276 IsEmpty]: Start isEmpty. Operand 11552 states and 14904 transitions. [2019-11-06 23:35:07,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-06 23:35:07,206 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:35:07,207 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:35:07,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:07,413 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:35:07,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:35:07,414 INFO L82 PathProgramCache]: Analyzing trace with hash 674163483, now seen corresponding path program 1 times [2019-11-06 23:35:07,414 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:35:07,414 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791634123] [2019-11-06 23:35:07,415 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:35:07,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:07,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791634123] [2019-11-06 23:35:07,606 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2019-11-06 23:35:07,606 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009153628] [2019-11-06 23:35:07,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:08,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 1826 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 23:35:08,155 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:08,198 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2019-11-06 23:35:08,199 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:08,413 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-06 23:35:08,414 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:08,414 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:35:08,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918197212] [2019-11-06 23:35:08,415 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:35:08,416 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:08,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:35:08,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:08,416 INFO L87 Difference]: Start difference. First operand 11552 states and 14904 transitions. Second operand 3 states. [2019-11-06 23:35:08,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:08,878 INFO L93 Difference]: Finished difference Result 28646 states and 36823 transitions. [2019-11-06 23:35:08,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:35:08,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-11-06 23:35:08,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:09,090 INFO L225 Difference]: With dead ends: 28646 [2019-11-06 23:35:09,091 INFO L226 Difference]: Without dead ends: 17118 [2019-11-06 23:35:09,121 INFO L630 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 [2019-11-06 23:35:09,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17118 states. [2019-11-06 23:35:09,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17118 to 17102. [2019-11-06 23:35:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17102 states. [2019-11-06 23:35:09,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17102 states to 17102 states and 21917 transitions. [2019-11-06 23:35:09,733 INFO L78 Accepts]: Start accepts. Automaton has 17102 states and 21917 transitions. Word has length 171 [2019-11-06 23:35:09,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:09,733 INFO L462 AbstractCegarLoop]: Abstraction has 17102 states and 21917 transitions. [2019-11-06 23:35:09,733 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:35:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 17102 states and 21917 transitions. [2019-11-06 23:35:09,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-06 23:35:09,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:35:09,748 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:35:09,956 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:09,957 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:35:09,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:35:09,957 INFO L82 PathProgramCache]: Analyzing trace with hash -2031721131, now seen corresponding path program 1 times [2019-11-06 23:35:09,957 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:35:09,957 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461923859] [2019-11-06 23:35:09,957 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:35:09,999 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:35:09,999 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664935982] [2019-11-06 23:35:09,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:10,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 23:35:10,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:10,719 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-06 23:35:10,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-11-06 23:35:10,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461923859] [2019-11-06 23:35:10,830 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:35:10,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664935982] [2019-11-06 23:35:10,830 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:10,831 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:35:10,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462703669] [2019-11-06 23:35:10,832 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:35:10,832 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:35:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:10,832 INFO L87 Difference]: Start difference. First operand 17102 states and 21917 transitions. Second operand 3 states. [2019-11-06 23:35:11,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:11,479 INFO L93 Difference]: Finished difference Result 43932 states and 56277 transitions. [2019-11-06 23:35:11,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:35:11,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-11-06 23:35:11,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:11,604 INFO L225 Difference]: With dead ends: 43932 [2019-11-06 23:35:11,604 INFO L226 Difference]: Without dead ends: 26863 [2019-11-06 23:35:11,657 INFO L630 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 [2019-11-06 23:35:11,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26863 states. [2019-11-06 23:35:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26863 to 26851. [2019-11-06 23:35:12,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26851 states. [2019-11-06 23:35:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26851 states to 26851 states and 34179 transitions. [2019-11-06 23:35:12,717 INFO L78 Accepts]: Start accepts. Automaton has 26851 states and 34179 transitions. Word has length 179 [2019-11-06 23:35:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:12,718 INFO L462 AbstractCegarLoop]: Abstraction has 26851 states and 34179 transitions. [2019-11-06 23:35:12,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:35:12,718 INFO L276 IsEmpty]: Start isEmpty. Operand 26851 states and 34179 transitions. [2019-11-06 23:35:12,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2019-11-06 23:35:12,736 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 23:35:12,736 INFO L410 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 23:35:12,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:12,946 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 23:35:12,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 23:35:12,947 INFO L82 PathProgramCache]: Analyzing trace with hash -501094365, now seen corresponding path program 1 times [2019-11-06 23:35:12,947 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-06 23:35:12,947 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263964245] [2019-11-06 23:35:12,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 23:35:12,989 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-06 23:35:12,989 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239459693] [2019-11-06 23:35:12,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 23:35:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 23:35:13,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 1802 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-06 23:35:13,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 23:35:13,528 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-06 23:35:13,528 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-06 23:35:13,676 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2019-11-06 23:35:13,676 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263964245] [2019-11-06 23:35:13,677 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-06 23:35:13,677 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239459693] [2019-11-06 23:35:13,677 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-06 23:35:13,677 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-06 23:35:13,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959821525] [2019-11-06 23:35:13,678 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-06 23:35:13,678 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-06 23:35:13,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-06 23:35:13,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-06 23:35:13,679 INFO L87 Difference]: Start difference. First operand 26851 states and 34179 transitions. Second operand 3 states. [2019-11-06 23:35:14,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 23:35:14,946 INFO L93 Difference]: Finished difference Result 40736 states and 52517 transitions. [2019-11-06 23:35:14,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-06 23:35:14,946 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 179 [2019-11-06 23:35:14,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 23:35:15,068 INFO L225 Difference]: With dead ends: 40736 [2019-11-06 23:35:15,069 INFO L226 Difference]: Without dead ends: 26939 [2019-11-06 23:35:15,108 INFO L630 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 [2019-11-06 23:35:15,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26939 states. [2019-11-06 23:35:15,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26939 to 26895. [2019-11-06 23:35:15,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26895 states. [2019-11-06 23:35:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26895 states to 26895 states and 34223 transitions. [2019-11-06 23:35:15,932 INFO L78 Accepts]: Start accepts. Automaton has 26895 states and 34223 transitions. Word has length 179 [2019-11-06 23:35:15,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 23:35:15,933 INFO L462 AbstractCegarLoop]: Abstraction has 26895 states and 34223 transitions. [2019-11-06 23:35:15,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-06 23:35:15,933 INFO L276 IsEmpty]: Start isEmpty. Operand 26895 states and 34223 transitions.