/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 21:13:52,857 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 21:13:52,860 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 21:13:52,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 21:13:52,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 21:13:52,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 21:13:52,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 21:13:52,879 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 21:13:52,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 21:13:52,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 21:13:52,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 21:13:52,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 21:13:52,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 21:13:52,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 21:13:52,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 21:13:52,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 21:13:52,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 21:13:52,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 21:13:52,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 21:13:52,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 21:13:52,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 21:13:52,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 21:13:52,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 21:13:52,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 21:13:52,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 21:13:52,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 21:13:52,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 21:13:52,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 21:13:52,901 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 21:13:52,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 21:13:52,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 21:13:52,903 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 21:13:52,904 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 21:13:52,905 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 21:13:52,906 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 21:13:52,906 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 21:13:52,906 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 21:13:52,907 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 21:13:52,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 21:13:52,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 21:13:52,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 21:13:52,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 21:13:52,923 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 21:13:52,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 21:13:52,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 21:13:52,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 21:13:52,925 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 21:13:52,925 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 21:13:52,926 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 21:13:52,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 21:13:52,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 21:13:52,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 21:13:52,926 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 21:13:52,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 21:13:52,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 21:13:52,927 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 21:13:52,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 21:13:52,927 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 21:13:52,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 21:13:52,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 21:13:52,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 21:13:52,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 21:13:52,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 21:13:52,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:13:52,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 21:13:52,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 21:13:52,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 21:13:52,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 21:13:52,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 21:13:52,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 21:13:52,930 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 21:13:53,203 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 21:13:53,216 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 21:13:53,220 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 21:13:53,221 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 21:13:53,221 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 21:13:53,222 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-06 21:13:53,300 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6a4a185/f747718d2dfa4b9b9a1660cb564329a7/FLAGaaf3b59d0 [2019-11-06 21:13:54,022 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 21:13:54,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-06 21:13:54,060 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6a4a185/f747718d2dfa4b9b9a1660cb564329a7/FLAGaaf3b59d0 [2019-11-06 21:13:54,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a6a4a185/f747718d2dfa4b9b9a1660cb564329a7 [2019-11-06 21:13:54,206 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 21:13:54,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 21:13:54,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 21:13:54,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 21:13:54,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 21:13:54,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:13:54" (1/1) ... [2019-11-06 21:13:54,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412e5438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:54, skipping insertion in model container [2019-11-06 21:13:54,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:13:54" (1/1) ... [2019-11-06 21:13:54,224 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 21:13:54,304 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 21:13:55,156 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:13:55,184 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 21:13:55,465 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 21:13:55,590 INFO L192 MainTranslator]: Completed translation [2019-11-06 21:13:55,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55 WrapperNode [2019-11-06 21:13:55,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 21:13:55,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 21:13:55,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 21:13:55,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 21:13:55,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... [2019-11-06 21:13:55,827 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 21:13:55,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 21:13:55,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 21:13:55,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 21:13:55,833 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 21:13:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 21:13:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 21:13:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2019-11-06 21:13:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-11-06 21:13:55,930 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-11-06 21:13:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-11-06 21:13:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2019-11-06 21:13:55,931 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-06 21:13:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-06 21:13:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_maxpacket [2019-11-06 21:13:55,932 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-06 21:13:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-06 21:13:55,933 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-06 21:13:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-06 21:13:55,934 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-06 21:13:55,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-06 21:13:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-06 21:13:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-06 21:13:55,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-06 21:13:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-06 21:13:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-06 21:13:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2019-11-06 21:13:55,938 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2019-11-06 21:13:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2019-11-06 21:13:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2019-11-06 21:13:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2019-11-06 21:13:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2019-11-06 21:13:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2019-11-06 21:13:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2019-11-06 21:13:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_irq [2019-11-06 21:13:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_open [2019-11-06 21:13:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_close [2019-11-06 21:13:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_probe [2019-11-06 21:13:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2019-11-06 21:13:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_init [2019-11-06 21:13:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_exit [2019-11-06 21:13:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2019-11-06 21:13:55,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 21:13:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2019-11-06 21:13:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_2 [2019-11-06 21:13:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2019-11-06 21:13:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2019-11-06 21:13:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_alloc_urb_5 [2019-11-06 21:13:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_6 [2019-11-06 21:13:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2019-11-06 21:13:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_8 [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_free_urb_10 [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2019-11-06 21:13:55,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2019-11-06 21:13:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2019-11-06 21:13:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2019-11-06 21:13:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2019-11-06 21:13:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2019-11-06 21:13:55,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2019-11-06 21:13:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2019-11-06 21:13:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2019-11-06 21:13:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2019-11-06 21:13:55,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-11-06 21:13:55,947 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-11-06 21:13:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2019-11-06 21:13:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2019-11-06 21:13:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2019-11-06 21:13:55,948 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2019-11-06 21:13:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2019-11-06 21:13:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-06 21:13:55,949 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-06 21:13:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2019-11-06 21:13:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2019-11-06 21:13:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2019-11-06 21:13:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-11-06 21:13:55,950 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-06 21:13:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2019-11-06 21:13:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-11-06 21:13:55,951 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-11-06 21:13:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-06 21:13:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2019-11-06 21:13:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-06 21:13:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-06 21:13:55,952 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-06 21:13:55,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-06 21:13:55,953 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 21:13:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2019-11-06 21:13:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-11-06 21:13:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-06 21:13:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-11-06 21:13:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_8 [2019-11-06 21:13:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2019-11-06 21:13:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2019-11-06 21:13:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2019-11-06 21:13:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-06 21:13:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_2 [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-11-06 21:13:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_6 [2019-11-06 21:13:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-11-06 21:13:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_alloc_urb_5 [2019-11-06 21:13:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-11-06 21:13:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_free_urb_10 [2019-11-06 21:13:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2019-11-06 21:13:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2019-11-06 21:13:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-11-06 21:13:55,960 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2019-11-06 21:13:55,961 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2019-11-06 21:13:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-06 21:13:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure usb_maxpacket [2019-11-06 21:13:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2019-11-06 21:13:55,962 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2019-11-06 21:13:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2019-11-06 21:13:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2019-11-06 21:13:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2019-11-06 21:13:55,963 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-06 21:13:55,964 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-06 21:13:55,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-06 21:13:55,966 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-06 21:13:55,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 21:13:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-06 21:13:55,970 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-06 21:13:55,971 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-06 21:13:55,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-06 21:13:55,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2019-11-06 21:13:55,978 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2019-11-06 21:13:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2019-11-06 21:13:55,979 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2019-11-06 21:13:55,980 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_irq [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_open [2019-11-06 21:13:55,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_close [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_probe [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_init [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_exit [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-06 21:13:55,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2019-11-06 21:13:55,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2019-11-06 21:13:55,984 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-06 21:13:55,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 21:13:56,672 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-06 21:13:57,789 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 21:13:57,790 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-06 21:13:57,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:13:57 BoogieIcfgContainer [2019-11-06 21:13:57,792 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 21:13:57,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 21:13:57,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 21:13:57,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 21:13:57,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:13:54" (1/3) ... [2019-11-06 21:13:57,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bf89f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:13:57, skipping insertion in model container [2019-11-06 21:13:57,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:13:55" (2/3) ... [2019-11-06 21:13:57,798 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79bf89f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:13:57, skipping insertion in model container [2019-11-06 21:13:57,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:13:57" (3/3) ... [2019-11-06 21:13:57,799 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-06 21:13:57,812 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 21:13:57,825 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 21:13:57,838 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 21:13:57,875 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 21:13:57,876 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 21:13:57,876 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 21:13:57,876 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 21:13:57,876 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 21:13:57,876 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 21:13:57,876 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 21:13:57,876 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 21:13:57,914 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states. [2019-11-06 21:13:57,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-11-06 21:13:57,927 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:13:57,928 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 21:13:57,933 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:13:57,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:13:57,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1810453021, now seen corresponding path program 1 times [2019-11-06 21:13:57,949 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:13:57,950 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461555560] [2019-11-06 21:13:57,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:13:58,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,815 WARN L191 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 21:13:58,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:13:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 21:13:58,989 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461555560] [2019-11-06 21:13:58,989 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:13:58,990 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-06 21:13:58,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464803238] [2019-11-06 21:13:58,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-06 21:13:58,997 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:13:59,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-06 21:13:59,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-11-06 21:13:59,019 INFO L87 Difference]: Start difference. First operand 504 states. Second operand 7 states. [2019-11-06 21:13:59,419 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 21:14:00,034 WARN L191 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-06 21:14:00,792 WARN L191 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-11-06 21:14:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:07,484 INFO L93 Difference]: Finished difference Result 1255 states and 1548 transitions. [2019-11-06 21:14:07,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-06 21:14:07,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2019-11-06 21:14:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:07,520 INFO L225 Difference]: With dead ends: 1255 [2019-11-06 21:14:07,520 INFO L226 Difference]: Without dead ends: 864 [2019-11-06 21:14:07,526 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2019-11-06 21:14:07,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2019-11-06 21:14:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 678. [2019-11-06 21:14:07,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2019-11-06 21:14:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 797 transitions. [2019-11-06 21:14:07,717 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 797 transitions. Word has length 43 [2019-11-06 21:14:07,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:07,717 INFO L462 AbstractCegarLoop]: Abstraction has 678 states and 797 transitions. [2019-11-06 21:14:07,717 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-06 21:14:07,718 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 797 transitions. [2019-11-06 21:14:07,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 21:14:07,722 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:07,722 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:14:07,723 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1648833292, now seen corresponding path program 1 times [2019-11-06 21:14:07,723 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:07,724 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759762872] [2019-11-06 21:14:07,724 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,182 WARN L191 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 21:14:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:08,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 21:14:08,489 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759762872] [2019-11-06 21:14:08,489 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:08,489 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2019-11-06 21:14:08,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865705713] [2019-11-06 21:14:08,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-06 21:14:08,492 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-06 21:14:08,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-11-06 21:14:08,494 INFO L87 Difference]: Start difference. First operand 678 states and 797 transitions. Second operand 11 states. [2019-11-06 21:14:08,795 WARN L191 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 21:14:09,208 WARN L191 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-06 21:14:09,587 WARN L191 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-11-06 21:14:14,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:14,648 INFO L93 Difference]: Finished difference Result 1538 states and 1865 transitions. [2019-11-06 21:14:14,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-06 21:14:14,648 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 70 [2019-11-06 21:14:14,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:14,655 INFO L225 Difference]: With dead ends: 1538 [2019-11-06 21:14:14,656 INFO L226 Difference]: Without dead ends: 880 [2019-11-06 21:14:14,659 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2019-11-06 21:14:14,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 880 states. [2019-11-06 21:14:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 880 to 683. [2019-11-06 21:14:14,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 683 states. [2019-11-06 21:14:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 801 transitions. [2019-11-06 21:14:14,800 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 801 transitions. Word has length 70 [2019-11-06 21:14:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:14,801 INFO L462 AbstractCegarLoop]: Abstraction has 683 states and 801 transitions. [2019-11-06 21:14:14,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-06 21:14:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 801 transitions. [2019-11-06 21:14:14,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-11-06 21:14:14,804 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:14,804 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:14:14,805 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:14,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:14,805 INFO L82 PathProgramCache]: Analyzing trace with hash -890510412, now seen corresponding path program 1 times [2019-11-06 21:14:14,805 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:14,807 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986888719] [2019-11-06 21:14:14,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,212 WARN L191 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 21:14:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:15,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 21:14:15,441 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986888719] [2019-11-06 21:14:15,441 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:15,441 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:14:15,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067849506] [2019-11-06 21:14:15,443 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:14:15,443 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:15,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:14:15,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:14:15,444 INFO L87 Difference]: Start difference. First operand 683 states and 801 transitions. Second operand 8 states. [2019-11-06 21:14:15,732 WARN L191 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 21:14:16,117 WARN L191 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-06 21:14:16,439 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-11-06 21:14:23,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:23,123 INFO L93 Difference]: Finished difference Result 2346 states and 2886 transitions. [2019-11-06 21:14:23,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-06 21:14:23,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2019-11-06 21:14:23,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:23,134 INFO L225 Difference]: With dead ends: 2346 [2019-11-06 21:14:23,135 INFO L226 Difference]: Without dead ends: 1683 [2019-11-06 21:14:23,138 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:14:23,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2019-11-06 21:14:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1357. [2019-11-06 21:14:23,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1357 states. [2019-11-06 21:14:23,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1597 transitions. [2019-11-06 21:14:23,587 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1597 transitions. Word has length 70 [2019-11-06 21:14:23,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:23,589 INFO L462 AbstractCegarLoop]: Abstraction has 1357 states and 1597 transitions. [2019-11-06 21:14:23,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:14:23,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1597 transitions. [2019-11-06 21:14:23,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2019-11-06 21:14:23,599 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:23,599 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:14:23,599 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:23,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:23,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1836161467, now seen corresponding path program 1 times [2019-11-06 21:14:23,600 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:23,601 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411472006] [2019-11-06 21:14:23,601 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:23,992 WARN L191 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 21:14:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:24,191 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 21:14:24,191 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411472006] [2019-11-06 21:14:24,191 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:24,192 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:14:24,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004341756] [2019-11-06 21:14:24,195 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:14:24,195 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:24,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:14:24,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:14:24,196 INFO L87 Difference]: Start difference. First operand 1357 states and 1597 transitions. Second operand 8 states. [2019-11-06 21:14:24,487 WARN L191 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 21:14:24,842 WARN L191 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-06 21:14:25,153 WARN L191 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2019-11-06 21:14:28,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 21:14:28,753 INFO L93 Difference]: Finished difference Result 1683 states and 2086 transitions. [2019-11-06 21:14:28,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-06 21:14:28,756 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2019-11-06 21:14:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 21:14:28,763 INFO L225 Difference]: With dead ends: 1683 [2019-11-06 21:14:28,764 INFO L226 Difference]: Without dead ends: 1680 [2019-11-06 21:14:28,765 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2019-11-06 21:14:28,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2019-11-06 21:14:28,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1356. [2019-11-06 21:14:28,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1356 states. [2019-11-06 21:14:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1595 transitions. [2019-11-06 21:14:28,991 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1595 transitions. Word has length 71 [2019-11-06 21:14:28,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 21:14:28,992 INFO L462 AbstractCegarLoop]: Abstraction has 1356 states and 1595 transitions. [2019-11-06 21:14:28,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-06 21:14:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1595 transitions. [2019-11-06 21:14:28,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-11-06 21:14:28,994 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 21:14:28,995 INFO L410 BasicCegarLoop]: trace histogram [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] [2019-11-06 21:14:28,995 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 21:14:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 21:14:28,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1086568233, now seen corresponding path program 1 times [2019-11-06 21:14:28,996 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 21:14:28,996 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848716448] [2019-11-06 21:14:28,996 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 21:14:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,482 WARN L191 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-11-06 21:14:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 21:14:29,679 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-11-06 21:14:29,679 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848716448] [2019-11-06 21:14:29,679 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 21:14:29,680 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 21:14:29,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339513962] [2019-11-06 21:14:29,683 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-06 21:14:29,683 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 21:14:29,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-06 21:14:29,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-06 21:14:29,684 INFO L87 Difference]: Start difference. First operand 1356 states and 1595 transitions. Second operand 8 states. [2019-11-06 21:14:29,933 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2019-11-06 21:14:30,299 WARN L191 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2019-11-06 21:14:30,661 WARN L191 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 198