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-f4eb214f-m [2019-10-13 19:10:38,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:10:38,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:10:38,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:10:38,853 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:10:38,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:10:38,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:10:38,866 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:10:38,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:10:38,869 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:10:38,871 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:10:38,873 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:10:38,873 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:10:38,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:10:38,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:10:38,881 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:10:38,882 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:10:38,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:10:38,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:10:38,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:10:38,895 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:10:38,896 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:10:38,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:10:38,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:10:38,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:10:38,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:10:38,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:10:38,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:10:38,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:10:38,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:10:38,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:10:38,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:10:38,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:10:38,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:10:38,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:10:38,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:10:38,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:10:38,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:10:38,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:10:38,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:10:38,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:10:38,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 19:10:38,949 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:10:38,950 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:10:38,953 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:10:38,953 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:10:38,953 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:10:38,953 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:10:38,953 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:10:38,954 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:10:38,954 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:10:38,954 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:10:38,954 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:10:38,954 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:10:38,955 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:10:38,955 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:10:38,955 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:10:38,955 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:10:38,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:10:38,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:10:38,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:10:38,956 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:10:38,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:10:38,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:10:38,957 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:10:38,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:10:38,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:10:38,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:10:38,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:10:38,958 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:10:38,958 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:10:39,239 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:10:39,252 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:10:39,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:10:39,258 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:10:39,258 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:10:39,259 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 19:10:39,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32aaf0f1a/f4107e1b28914faf90733474cd919773/FLAG244308094 [2019-10-13 19:10:40,086 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:10:40,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.6/linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 19:10:40,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32aaf0f1a/f4107e1b28914faf90733474cd919773/FLAG244308094 [2019-10-13 19:10:40,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32aaf0f1a/f4107e1b28914faf90733474cd919773 [2019-10-13 19:10:40,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:10:40,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:10:40,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:10:40,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:10:40,205 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:10:40,206 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:40" (1/1) ... [2019-10-13 19:10:40,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@475f182d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:40, skipping insertion in model container [2019-10-13 19:10:40,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:10:40" (1/1) ... [2019-10-13 19:10:40,215 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:10:40,305 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:10:41,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:10:41,416 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:10:41,656 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:10:41,762 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:10:41,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41 WrapperNode [2019-10-13 19:10:41,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:10:41,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:10:41,764 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:10:41,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:10:41,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,820 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... [2019-10-13 19:10:41,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:10:41,974 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:10:41,974 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:10:41,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:10:41,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:10:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:10:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:10:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 19:10:42,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 19:10:42,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_negative [2019-10-13 19:10:42,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-10-13 19:10:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2019-10-13 19:10:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2019-10-13 19:10:42,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 19:10:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 19:10:42,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kzalloc_1 [2019-10-13 19:10:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 19:10:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 19:10:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2019-10-13 19:10:42,097 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_out [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_data [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_data [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure qcprobe [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure qc_release [2019-10-13 19:10:42,098 INFO L138 BoogieDeclarations]: Found implementation of procedure qcinit [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure qcexit [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 19:10:42,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_3 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_4 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_5 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_6 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_7 [2019-10-13 19:10:42,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_8 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_interface_9 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_10 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_11 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kfree_12 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_13 [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc [2019-10-13 19:10:42,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free [2019-10-13 19:10:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 19:10:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2019-10-13 19:10:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2019-10-13 19:10:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 19:10:42,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_reset_resume_2 [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_enable_autosuspend [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-13 19:10:42,103 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-13 19:10:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-13 19:10:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_resume [2019-10-13 19:10:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_suspend [2019-10-13 19:10:42,104 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2019-10-13 19:10:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_chars_in_buffer [2019-10-13 19:10:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_close [2019-10-13 19:10:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_disconnect [2019-10-13 19:10:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_open [2019-10-13 19:10:42,105 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_release [2019-10-13 19:10:42,106 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_resume [2019-10-13 19:10:42,106 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_startup [2019-10-13 19:10:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_suspend [2019-10-13 19:10:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write [2019-10-13 19:10:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wwan_write_room [2019-10-13 19:10:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 19:10:42,107 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 19:10:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 19:10:42,108 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 19:10:42,109 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 19:10:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 19:10:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 19:10:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 19:10:42,110 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:10:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 19:10:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 19:10:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 19:10:42,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 19:10:42,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_negative [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 19:10:42,113 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_4 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_6 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_8 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_10 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_11 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kfree_12 [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 19:10:42,114 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 19:10:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kzalloc_1 [2019-10-13 19:10:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 19:10:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 19:10:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 19:10:42,115 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2019-10-13 19:10:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 19:10:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 19:10:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 19:10:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2019-10-13 19:10:42,116 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2019-10-13 19:10:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_out [2019-10-13 19:10:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure usb_enable_autosuspend [2019-10-13 19:10:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 19:10:42,117 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-10-13 19:10:42,118 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_13 [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_3 [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_5 [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_7 [2019-10-13 19:10:42,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_interface_9 [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_data [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_data [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-13 19:10:42,120 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_suspend [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_resume [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_open [2019-10-13 19:10:42,121 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_close [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_startup [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_disconnect [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_release [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write_room [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_write [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_chars_in_buffer [2019-10-13 19:10:42,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_suspend [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wwan_resume [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure qcprobe [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure qc_release [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure qcinit [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure qcexit [2019-10-13 19:10:42,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_reset_resume_2 [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 19:10:42,124 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 19:10:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:10:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 19:10:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 19:10:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:10:42,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 19:10:43,217 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 19:10:44,455 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:10:44,455 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:10:44,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:44 BoogieIcfgContainer [2019-10-13 19:10:44,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:10:44,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:10:44,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:10:44,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:10:44,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:10:40" (1/3) ... [2019-10-13 19:10:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a5c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:44, skipping insertion in model container [2019-10-13 19:10:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:10:41" (2/3) ... [2019-10-13 19:10:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a5c326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:10:44, skipping insertion in model container [2019-10-13 19:10:44,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:10:44" (3/3) ... [2019-10-13 19:10:44,467 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-c0cc359-104_1a-drivers--usb--serial--qcserial.ko-entry_point.cil.out.i [2019-10-13 19:10:44,478 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:10:44,495 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:10:44,508 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:10:44,556 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:10:44,556 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:10:44,557 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:10:44,557 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:10:44,557 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:10:44,557 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:10:44,557 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:10:44,558 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:10:44,597 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states. [2019-10-13 19:10:44,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-10-13 19:10:44,624 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:10:44,626 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] [2019-10-13 19:10:44,628 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:10:44,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:10:44,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1003828222, now seen corresponding path program 1 times [2019-10-13 19:10:44,644 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:10:44,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266204940] [2019-10-13 19:10:44,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:10:44,645 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:10:44,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:10:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,174 WARN L191 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-10-13 19:10:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:10:46,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:10:46,491 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266204940] [2019-10-13 19:10:46,492 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:10:46,492 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-13 19:10:46,492 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965153832] [2019-10-13 19:10:46,498 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 19:10:46,498 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:10:46,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 19:10:46,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:10:46,517 INFO L87 Difference]: Start difference. First operand 542 states. Second operand 7 states. [2019-10-13 19:10:47,255 WARN L191 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-10-13 19:10:48,222 WARN L191 SmtUtils]: Spent 606.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-10-13 19:10:48,992 WARN L191 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-10-13 19:11:02,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:11:02,153 INFO L93 Difference]: Finished difference Result 1472 states and 2091 transitions. [2019-10-13 19:11:02,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-13 19:11:02,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2019-10-13 19:11:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:11:02,189 INFO L225 Difference]: With dead ends: 1472 [2019-10-13 19:11:02,189 INFO L226 Difference]: Without dead ends: 1411 [2019-10-13 19:11:02,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2019-10-13 19:11:02,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2019-10-13 19:11:02,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 974. [2019-10-13 19:11:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 974 states. [2019-10-13 19:11:02,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1273 transitions. [2019-10-13 19:11:02,514 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1273 transitions. Word has length 62 [2019-10-13 19:11:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:11:02,515 INFO L462 AbstractCegarLoop]: Abstraction has 974 states and 1273 transitions. [2019-10-13 19:11:02,515 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 19:11:02,515 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1273 transitions. [2019-10-13 19:11:02,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-10-13 19:11:02,524 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:02,525 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] [2019-10-13 19:11:02,525 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:02,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:02,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1316676879, now seen corresponding path program 1 times [2019-10-13 19:11:02,526 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:02,527 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994332586] [2019-10-13 19:11:02,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:02,527 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:02,527 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,328 WARN L191 SmtUtils]: Spent 552.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-10-13 19:11:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:03,674 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-10-13 19:11:03,675 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994332586] [2019-10-13 19:11:03,675 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:11:03,675 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-10-13 19:11:03,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272148416] [2019-10-13 19:11:03,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-13 19:11:03,679 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:11:03,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-13 19:11:03,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:11:03,681 INFO L87 Difference]: Start difference. First operand 974 states and 1273 transitions. Second operand 11 states. [2019-10-13 19:11:04,303 WARN L191 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2019-10-13 19:11:05,415 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification that was a NOOP. DAG size: 324 [2019-10-13 19:11:06,085 WARN L191 SmtUtils]: Spent 564.00 ms on a formula simplification that was a NOOP. DAG size: 315 [2019-10-13 19:11:13,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:11:13,218 INFO L93 Difference]: Finished difference Result 2769 states and 3806 transitions. [2019-10-13 19:11:13,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-13 19:11:13,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-10-13 19:11:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:11:13,245 INFO L225 Difference]: With dead ends: 2769 [2019-10-13 19:11:13,246 INFO L226 Difference]: Without dead ends: 1818 [2019-10-13 19:11:13,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2019-10-13 19:11:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2019-10-13 19:11:13,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1245. [2019-10-13 19:11:13,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1245 states. [2019-10-13 19:11:13,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1245 states to 1245 states and 1635 transitions. [2019-10-13 19:11:13,524 INFO L78 Accepts]: Start accepts. Automaton has 1245 states and 1635 transitions. Word has length 105 [2019-10-13 19:11:13,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:11:13,527 INFO L462 AbstractCegarLoop]: Abstraction has 1245 states and 1635 transitions. [2019-10-13 19:11:13,527 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-13 19:11:13,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1245 states and 1635 transitions. [2019-10-13 19:11:13,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-13 19:11:13,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:11:13,539 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] [2019-10-13 19:11:13,539 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:11:13,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:11:13,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1713323143, now seen corresponding path program 1 times [2019-10-13 19:11:13,540 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:11:13,540 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332595803] [2019-10-13 19:11:13,540 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:13,541 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:11:13,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:11:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,425 WARN L191 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 313 [2019-10-13 19:11:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:11:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-10-13 19:11:14,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332595803] [2019-10-13 19:11:14,809 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:11:14,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2019-10-13 19:11:14,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055035869] [2019-10-13 19:11:14,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 19:11:14,812 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:11:14,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 19:11:14,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-13 19:11:14,812 INFO L87 Difference]: Start difference. First operand 1245 states and 1635 transitions. Second operand 12 states. [2019-10-13 19:11:15,510 WARN L191 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 322