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 -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 22:31:06,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 22:31:06,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 22:31:06,973 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 22:31:06,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 22:31:06,974 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 22:31:06,976 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 22:31:06,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 22:31:06,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 22:31:06,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 22:31:06,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 22:31:06,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 22:31:06,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 22:31:06,983 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 22:31:06,984 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 22:31:06,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 22:31:06,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 22:31:06,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 22:31:06,988 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 22:31:06,990 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 22:31:06,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 22:31:06,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 22:31:06,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 22:31:06,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 22:31:06,997 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 22:31:06,997 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 22:31:06,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 22:31:06,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 22:31:06,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 22:31:06,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 22:31:07,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 22:31:07,000 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 22:31:07,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 22:31:07,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 22:31:07,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 22:31:07,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 22:31:07,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 22:31:07,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 22:31:07,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 22:31:07,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 22:31:07,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 22:31:07,013 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 22:31:07,038 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 22:31:07,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 22:31:07,040 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 22:31:07,040 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 22:31:07,040 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 22:31:07,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 22:31:07,041 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 22:31:07,041 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 22:31:07,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 22:31:07,041 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 22:31:07,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 22:31:07,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 22:31:07,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 22:31:07,043 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 22:31:07,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 22:31:07,044 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 22:31:07,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 22:31:07,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 22:31:07,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 22:31:07,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 22:31:07,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 22:31:07,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:31:07,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 22:31:07,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 22:31:07,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 22:31:07,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 22:31:07,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 22:31:07,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 22:31:07,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 22:31:07,381 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 22:31:07,402 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 22:31:07,405 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 22:31:07,407 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 22:31:07,407 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 22:31:07,408 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-10-14 22:31:07,484 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86916cce9/44aba2980ae64029ba607d0a161799ff/FLAGdd677a1a6 [2019-10-14 22:31:08,321 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 22:31:08,321 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-10-14 22:31:08,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86916cce9/44aba2980ae64029ba607d0a161799ff/FLAGdd677a1a6 [2019-10-14 22:31:08,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86916cce9/44aba2980ae64029ba607d0a161799ff [2019-10-14 22:31:08,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 22:31:08,835 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 22:31:08,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 22:31:08,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 22:31:08,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 22:31:08,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:08" (1/1) ... [2019-10-14 22:31:08,843 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2145fe62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:08, skipping insertion in model container [2019-10-14 22:31:08,844 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 10:31:08" (1/1) ... [2019-10-14 22:31:08,851 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 22:31:08,947 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 22:31:10,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:31:10,355 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 22:31:10,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 22:31:10,653 INFO L192 MainTranslator]: Completed translation [2019-10-14 22:31:10,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10 WrapperNode [2019-10-14 22:31:10,654 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 22:31:10,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 22:31:10,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 22:31:10,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 22:31:10,669 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,767 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,779 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... [2019-10-14 22:31:10,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 22:31:10,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 22:31:10,833 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 22:31:10,833 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 22:31:10,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 22:31:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 22:31:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 22:31:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2019-10-14 22:31:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_end_pointer [2019-10-14 22:31:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_cloned [2019-10-14 22:31:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_is_nonlinear [2019-10-14 22:31:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_tail_pointer [2019-10-14 22:31:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_set_tail_pointer [2019-10-14 22:31:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_headroom [2019-10-14 22:31:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2019-10-14 22:31:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 22:31:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 22:31:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 22:31:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 22:31:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 22:31:11,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 22:31:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 22:31:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-14 22:31:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-14 22:31:11,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2019-10-14 22:31:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-14 22:31:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_rx_fixup [2019-10-14 22:31:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_tx_fixup [2019-10-14 22:31:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure genelink_bind [2019-10-14 22:31:11,046 INFO L138 BoogieDeclarations]: Found implementation of procedure gl620a_driver_init [2019-10-14 22:31:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure gl620a_driver_exit [2019-10-14 22:31:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_driver_info_2 [2019-10-14 22:31:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-10-14 22:31:11,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 22:31:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_consume_skb_5 [2019-10-14 22:31:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_6 [2019-10-14 22:31:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_7 [2019-10-14 22:31:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_8 [2019-10-14 22:31:11,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_skb_11 [2019-10-14 22:31:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2019-10-14 22:31:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_13 [2019-10-14 22:31:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_14 [2019-10-14 22:31:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2019-10-14 22:31:11,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-10-14 22:31:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2019-10-14 22:31:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_contains [2019-10-14 22:31:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2019-10-14 22:31:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2019-10-14 22:31:11,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_err_ptr [2019-10-14 22:31:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_ptr_err [2019-10-14 22:31:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err_or_null [2019-10-14 22:31:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2019-10-14 22:31:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 22:31:11,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2019-10-14 22:31:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2019-10-14 22:31:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_alloc_skb [2019-10-14 22:31:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netdev_alloc_skb [2019-10-14 22:31:11,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_current [2019-10-14 22:31:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 22:31:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __dev_kfree_skb_any [2019-10-14 22:31:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __dynamic_netdev_dbg [2019-10-14 22:31:11,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2019-10-14 22:31:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_1 [2019-10-14 22:31:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_expand [2019-10-14 22:31:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2019-10-14 22:31:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2019-10-14 22:31:11,054 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2019-10-14 22:31:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 22:31:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 22:31:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2019-10-14 22:31:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_probe [2019-10-14 22:31:11,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_resume [2019-10-14 22:31:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2019-10-14 22:31:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_suspend [2019-10-14 22:31:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 22:31:11,056 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 22:31:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 22:31:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 22:31:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-14 22:31:11,057 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2019-10-14 22:31:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 22:31:11,057 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure __dynamic_netdev_dbg [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 22:31:11,058 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_6 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_7 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_8 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_skb_11 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_consume_skb_5 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2019-10-14 22:31:11,059 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_expand [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_end_pointer [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_cloned [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_is_nonlinear [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_tail_pointer [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 22:31:11,060 INFO L130 BoogieDeclarations]: Found specification of procedure skb_set_tail_pointer [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_headroom [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2019-10-14 22:31:11,061 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 22:31:11,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 22:31:11,063 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_driver_info_2 [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_any [2019-10-14 22:31:11,064 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_13 [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_14 [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-14 22:31:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_probe [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_suspend [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_resume [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_rx_fixup [2019-10-14 22:31:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_tx_fixup [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure genelink_bind [2019-10-14 22:31:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure gl620a_driver_init [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure gl620a_driver_exit [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_1 [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 22:31:11,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_contains [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2019-10-14 22:31:11,069 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_err_ptr [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_ptr_err [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err_or_null [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netdev_alloc_skb [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_alloc_skb [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_current [2019-10-14 22:31:11,070 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-14 22:31:11,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 22:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-14 22:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-14 22:31:11,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-14 22:31:11,746 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 22:31:13,976 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 22:31:13,977 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 22:31:13,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:13 BoogieIcfgContainer [2019-10-14 22:31:13,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 22:31:13,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 22:31:13,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 22:31:13,984 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 22:31:13,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 10:31:08" (1/3) ... [2019-10-14 22:31:13,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db19ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:13, skipping insertion in model container [2019-10-14 22:31:13,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 10:31:10" (2/3) ... [2019-10-14 22:31:13,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37db19ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 10:31:13, skipping insertion in model container [2019-10-14 22:31:13,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 10:31:13" (3/3) ... [2019-10-14 22:31:13,990 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--gl620a.ko-entry_point.cil.out.i [2019-10-14 22:31:14,003 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 22:31:14,015 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 22:31:14,029 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 22:31:14,064 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 22:31:14,064 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 22:31:14,064 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 22:31:14,064 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 22:31:14,065 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 22:31:14,065 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 22:31:14,065 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 22:31:14,065 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 22:31:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states. [2019-10-14 22:31:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2019-10-14 22:31:14,129 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:31:14,131 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2019-10-14 22:31:14,135 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:31:14,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:31:14,140 INFO L82 PathProgramCache]: Analyzing trace with hash -770013367, now seen corresponding path program 1 times [2019-10-14 22:31:14,146 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:31:14,147 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518732211] [2019-10-14 22:31:14,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:14,147 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:14,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:31:14,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,337 WARN L191 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-10-14 22:31:15,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-14 22:31:15,622 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518732211] [2019-10-14 22:31:15,623 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:31:15,623 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-14 22:31:15,624 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642312331] [2019-10-14 22:31:15,630 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 22:31:15,630 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:31:15,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 22:31:15,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 22:31:15,647 INFO L87 Difference]: Start difference. First operand 375 states. Second operand 8 states. [2019-10-14 22:31:20,132 WARN L191 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2019-10-14 22:31:27,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:31:27,781 INFO L93 Difference]: Finished difference Result 1320 states and 1816 transitions. [2019-10-14 22:31:27,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 22:31:27,783 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 66 [2019-10-14 22:31:27,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:31:27,810 INFO L225 Difference]: With dead ends: 1320 [2019-10-14 22:31:27,810 INFO L226 Difference]: Without dead ends: 950 [2019-10-14 22:31:27,819 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=142, Invalid=320, Unknown=0, NotChecked=0, Total=462 [2019-10-14 22:31:27,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 950 states. [2019-10-14 22:31:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 950 to 626. [2019-10-14 22:31:28,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2019-10-14 22:31:28,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 778 transitions. [2019-10-14 22:31:28,035 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 778 transitions. Word has length 66 [2019-10-14 22:31:28,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:31:28,036 INFO L462 AbstractCegarLoop]: Abstraction has 626 states and 778 transitions. [2019-10-14 22:31:28,036 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 22:31:28,036 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 778 transitions. [2019-10-14 22:31:28,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-10-14 22:31:28,041 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:31:28,042 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 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] [2019-10-14 22:31:28,042 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:31:28,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:31:28,043 INFO L82 PathProgramCache]: Analyzing trace with hash 179693087, now seen corresponding path program 1 times [2019-10-14 22:31:28,043 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:31:28,043 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881479538] [2019-10-14 22:31:28,043 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:28,044 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:28,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:31:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,696 WARN L191 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-10-14 22:31:28,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:28,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:29,060 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 22:31:29,061 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881479538] [2019-10-14 22:31:29,061 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 22:31:29,061 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-14 22:31:29,061 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906229897] [2019-10-14 22:31:29,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-14 22:31:29,063 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:31:29,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-14 22:31:29,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2019-10-14 22:31:29,064 INFO L87 Difference]: Start difference. First operand 626 states and 778 transitions. Second operand 12 states. [2019-10-14 22:31:32,469 WARN L191 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 258 [2019-10-14 22:31:35,619 WARN L191 SmtUtils]: Spent 919.00 ms on a formula simplification. DAG size of input: 266 DAG size of output: 261 [2019-10-14 22:31:36,312 WARN L191 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2019-10-14 22:31:36,824 WARN L191 SmtUtils]: Spent 450.00 ms on a formula simplification that was a NOOP. DAG size: 261 [2019-10-14 22:31:41,239 WARN L191 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 266 [2019-10-14 22:31:42,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:31:42,564 INFO L93 Difference]: Finished difference Result 2249 states and 2986 transitions. [2019-10-14 22:31:42,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-10-14 22:31:42,565 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 82 [2019-10-14 22:31:42,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:31:42,578 INFO L225 Difference]: With dead ends: 2249 [2019-10-14 22:31:42,578 INFO L226 Difference]: Without dead ends: 1624 [2019-10-14 22:31:42,583 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=203, Invalid=447, Unknown=0, NotChecked=0, Total=650 [2019-10-14 22:31:42,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2019-10-14 22:31:42,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1273. [2019-10-14 22:31:42,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1273 states. [2019-10-14 22:31:42,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1273 states to 1273 states and 1611 transitions. [2019-10-14 22:31:42,825 INFO L78 Accepts]: Start accepts. Automaton has 1273 states and 1611 transitions. Word has length 82 [2019-10-14 22:31:42,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:31:42,826 INFO L462 AbstractCegarLoop]: Abstraction has 1273 states and 1611 transitions. [2019-10-14 22:31:42,826 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-14 22:31:42,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1273 states and 1611 transitions. [2019-10-14 22:31:42,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-14 22:31:42,833 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:31:42,834 INFO L380 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-10-14 22:31:42,834 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:31:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:31:42,835 INFO L82 PathProgramCache]: Analyzing trace with hash -2036601842, now seen corresponding path program 1 times [2019-10-14 22:31:42,835 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:31:42,835 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565251686] [2019-10-14 22:31:42,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:42,836 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:42,836 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:31:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,389 WARN L191 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 256 [2019-10-14 22:31:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2019-10-14 22:31:44,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565251686] [2019-10-14 22:31:44,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529658460] [2019-10-14 22:31:44,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:31:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 22:31:44,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-14 22:31:44,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 22:31:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-14 22:31:44,511 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-14 22:31:44,511 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 14 [2019-10-14 22:31:44,512 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621744213] [2019-10-14 22:31:44,513 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-14 22:31:44,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 22:31:44,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-14 22:31:44,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:31:44,518 INFO L87 Difference]: Start difference. First operand 1273 states and 1611 transitions. Second operand 3 states. [2019-10-14 22:31:44,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 22:31:44,801 INFO L93 Difference]: Finished difference Result 2856 states and 3629 transitions. [2019-10-14 22:31:44,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 22:31:44,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-14 22:31:44,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 22:31:44,812 INFO L225 Difference]: With dead ends: 2856 [2019-10-14 22:31:44,812 INFO L226 Difference]: Without dead ends: 1608 [2019-10-14 22:31:44,817 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 203 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2019-10-14 22:31:44,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1608 states. [2019-10-14 22:31:45,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1608 to 1584. [2019-10-14 22:31:45,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2019-10-14 22:31:45,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2020 transitions. [2019-10-14 22:31:45,063 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2020 transitions. Word has length 159 [2019-10-14 22:31:45,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 22:31:45,064 INFO L462 AbstractCegarLoop]: Abstraction has 1584 states and 2020 transitions. [2019-10-14 22:31:45,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-14 22:31:45,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2020 transitions. [2019-10-14 22:31:45,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-10-14 22:31:45,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 22:31:45,072 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-10-14 22:31:45,280 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 22:31:45,281 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 22:31:45,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 22:31:45,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1755019596, now seen corresponding path program 1 times [2019-10-14 22:31:45,281 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 22:31:45,282 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402139339] [2019-10-14 22:31:45,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:45,282 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 22:31:45,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 22:31:45,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat