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-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:09:39,714 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:09:39,717 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:09:39,734 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:09:39,734 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:09:39,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:09:39,738 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:09:39,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:09:39,751 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:09:39,755 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:09:39,757 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:09:39,758 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:09:39,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:09:39,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:09:39,762 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:09:39,764 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:09:39,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:09:39,766 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:09:39,767 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:09:39,771 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:09:39,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:09:39,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:09:39,777 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:09:39,778 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:09:39,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:09:39,781 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:09:39,781 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:09:39,783 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:09:39,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:09:39,785 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:09:39,785 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:09:39,786 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:09:39,787 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:09:39,787 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:09:39,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:09:39,789 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:09:39,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:09:39,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:09:39,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:09:39,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:09:39,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:09:39,793 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 23:09:39,823 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:09:39,823 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:09:39,824 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:09:39,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:09:39,825 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:09:39,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:09:39,825 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:09:39,825 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:09:39,826 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:09:39,826 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:09:39,826 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:09:39,826 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:09:39,826 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:09:39,827 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:09:39,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:09:39,827 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:09:39,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:09:39,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:09:39,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:09:39,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:09:39,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:09:39,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:09:39,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:09:39,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:09:39,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:09:39,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:09:39,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:09:39,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:09:39,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:09:40,084 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:09:40,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:09:40,100 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:09:40,101 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:09:40,102 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:09:40,103 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-14 23:09:40,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9879f243/9f993c62dc064262a56b9ffafb9d3bb3/FLAG5d922ecba [2019-10-14 23:09:40,968 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:09:40,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-14 23:09:40,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9879f243/9f993c62dc064262a56b9ffafb9d3bb3/FLAG5d922ecba [2019-10-14 23:09:41,083 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9879f243/9f993c62dc064262a56b9ffafb9d3bb3 [2019-10-14 23:09:41,093 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:09:41,095 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:09:41,095 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:09:41,096 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:09:41,099 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:09:41,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:41" (1/1) ... [2019-10-14 23:09:41,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a08c9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:41, skipping insertion in model container [2019-10-14 23:09:41,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:41" (1/1) ... [2019-10-14 23:09:41,113 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:09:41,228 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:09:42,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:09:42,367 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:09:42,686 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:09:42,840 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:09:42,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42 WrapperNode [2019-10-14 23:09:42,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:09:42,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:09:42,842 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:09:42,842 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:09:42,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:42,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:42,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:42,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:43,024 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:43,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:43,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (1/1) ... [2019-10-14 23:09:43,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:09:43,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:09:43,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:09:43,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:09:43,089 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (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 23:09:43,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:09:43,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:09:43,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-14 23:09:43,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-14 23:09:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-14 23:09:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-14 23:09:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-14 23:09:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-14 23:09:43,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-14 23:09:43,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-14 23:09:43,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-14 23:09:43,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-14 23:09:43,215 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-14 23:09:43,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-14 23:09:43,216 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-14 23:09:43,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-10-14 23:09:43,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-14 23:09:43,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-14 23:09:43,217 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-10-14 23:09:43,218 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-10-14 23:09:43,219 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-10-14 23:09:43,219 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-10-14 23:09:43,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_6 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_7 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_8 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_9 [2019-10-14 23:09:43,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-10-14 23:09:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_11 [2019-10-14 23:09:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_12 [2019-10-14 23:09:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2019-10-14 23:09:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-10-14 23:09:43,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-10-14 23:09:43,223 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-14 23:09:43,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-10-14 23:09:43,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-10-14 23:09:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-10-14 23:09:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-10-14 23:09:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-10-14 23:09:43,226 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-10-14 23:09:43,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-10-14 23:09:43,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-10-14 23:09:43,227 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-14 23:09:43,227 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-14 23:09:43,228 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-14 23:09:43,228 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-14 23:09:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:09:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-14 23:09:43,228 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-14 23:09:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:09:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:09:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-14 23:09:43,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:09:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-14 23:09:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-14 23:09:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:09:43,230 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-14 23:09:43,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:09:43,231 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-14 23:09:43,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-14 23:09:43,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-14 23:09:43,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-14 23:09:43,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-14 23:09:43,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-14 23:09:43,233 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_6 [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_8 [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_11 [2019-10-14 23:09:43,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_12 [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-14 23:09:43,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-14 23:09:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-14 23:09:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-14 23:09:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:09:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-14 23:09:43,236 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-10-14 23:09:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-10-14 23:09:43,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-10-14 23:09:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-10-14 23:09:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-14 23:09:43,238 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-14 23:09:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-14 23:09:43,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:09:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-14 23:09:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2019-10-14 23:09:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-14 23:09:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-10-14 23:09:43,240 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_7 [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_9 [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:09:43,241 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-14 23:09:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-14 23:09:43,242 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-14 23:09:43,245 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-14 23:09:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-10-14 23:09:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-10-14 23:09:43,246 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-10-14 23:09:43,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-10-14 23:09:43,253 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-10-14 23:09:43,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-10-14 23:09:43,254 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-10-14 23:09:43,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-14 23:09:43,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:09:43,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:09:43,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:09:44,520 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-14 23:09:45,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:09:45,794 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:09:45,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:45 BoogieIcfgContainer [2019-10-14 23:09:45,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:09:45,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:09:45,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:09:45,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:09:45,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:09:41" (1/3) ... [2019-10-14 23:09:45,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cda4339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:45, skipping insertion in model container [2019-10-14 23:09:45,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:42" (2/3) ... [2019-10-14 23:09:45,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cda4339 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:45, skipping insertion in model container [2019-10-14 23:09:45,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:45" (3/3) ... [2019-10-14 23:09:45,804 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-14 23:09:45,813 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:09:45,826 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:09:45,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:09:45,876 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:09:45,876 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:09:45,876 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:09:45,876 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:09:45,876 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:09:45,876 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:09:45,877 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:09:45,877 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:09:45,917 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-14 23:09:45,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-14 23:09:45,944 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:09:45,945 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] [2019-10-14 23:09:45,948 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:09:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:09:45,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1003828222, now seen corresponding path program 1 times [2019-10-14 23:09:45,964 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:09:45,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589958723] [2019-10-14 23:09:45,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:45,965 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:09:45,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:09:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,576 WARN L191 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-10-14 23:09:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:09:47,984 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 23:09:47,984 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589958723] [2019-10-14 23:09:47,985 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:09:47,986 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-14 23:09:47,986 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385401518] [2019-10-14 23:09:47,992 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:09:47,992 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:09:48,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:09:48,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:09:48,010 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 7 states. [2019-10-14 23:09:48,897 WARN L191 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-10-14 23:09:50,232 WARN L191 SmtUtils]: Spent 771.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-10-14 23:09:51,128 WARN L191 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-10-14 23:10:05,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:10:05,784 INFO L93 Difference]: Finished difference Result 1472 states and 2091 transitions. [2019-10-14 23:10:05,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:10:05,787 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2019-10-14 23:10:05,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:10:05,822 INFO L225 Difference]: With dead ends: 1472 [2019-10-14 23:10:05,822 INFO L226 Difference]: Without dead ends: 1411 [2019-10-14 23:10:05,829 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:10:05,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2019-10-14 23:10:06,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 974. [2019-10-14 23:10:06,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-14 23:10:06,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1273 transitions. [2019-10-14 23:10:06,136 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1273 transitions. Word has length 62 [2019-10-14 23:10:06,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:10:06,138 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1273 transitions. [2019-10-14 23:10:06,138 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:10:06,138 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1273 transitions. [2019-10-14 23:10:06,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-14 23:10:06,166 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:10:06,166 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2019-10-14 23:10:06,167 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:10:06,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:10:06,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1316676879, now seen corresponding path program 1 times [2019-10-14 23:10:06,168 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:10:06,168 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183497941] [2019-10-14 23:10:06,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:06,169 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:06,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:10:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,221 WARN L191 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-10-14 23:10:07,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:10:07,567 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-14 23:10:07,567 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183497941] [2019-10-14 23:10:07,568 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:10:07,568 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-14 23:10:07,568 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982864302] [2019-10-14 23:10:07,571 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:10:07,572 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:10:07,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:10:07,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:10:07,573 INFO L87 Difference]: Start difference. First operand 974 states and 1273 transitions. Second operand 11 states. [2019-10-14 23:10:08,330 WARN L191 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-10-14 23:10:09,558 WARN L191 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-10-14 23:10:10,435 WARN L191 SmtUtils]: Spent 767.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-10-14 23:10:18,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:10:18,261 INFO L93 Difference]: Finished difference Result 2769 states and 3806 transitions. [2019-10-14 23:10:18,262 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-14 23:10:18,262 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-14 23:10:18,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:10:18,276 INFO L225 Difference]: With dead ends: 2769 [2019-10-14 23:10:18,277 INFO L226 Difference]: Without dead ends: 1818 [2019-10-14 23:10:18,283 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2019-10-14 23:10:18,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-10-14 23:10:18,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1245. [2019-10-14 23:10:18,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2019-10-14 23:10:18,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1635 transitions. [2019-10-14 23:10:18,517 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1635 transitions. Word has length 105 [2019-10-14 23:10:18,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:10:18,518 INFO L462 AbstractCegarLoop]: Abstraction has 1245 states and 1635 transitions. [2019-10-14 23:10:18,518 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:10:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1635 transitions. [2019-10-14 23:10:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-14 23:10:18,526 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:10:18,527 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:10:18,527 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:10:18,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:10:18,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1713323143, now seen corresponding path program 1 times [2019-10-14 23:10:18,528 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:10:18,528 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743166671] [2019-10-14 23:10:18,528 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:18,528 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:10:18,528 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:10:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat