java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:02:37,544 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:02:37,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:02:37,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:02:37,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:02:37,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:02:37,568 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:02:37,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:02:37,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:02:37,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:02:37,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:02:37,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:02:37,588 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:02:37,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:02:37,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:02:37,593 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:02:37,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:02:37,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:02:37,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:02:37,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:02:37,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:02:37,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:02:37,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:02:37,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:02:37,615 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:02:37,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:02:37,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:02:37,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:02:37,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:02:37,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:02:37,619 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:02:37,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:02:37,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:02:37,622 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:02:37,624 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:02:37,624 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:02:37,625 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:02:37,625 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:02:37,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:02:37,627 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:02:37,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:02:37,629 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 [2019-10-15 01:02:37,663 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:02:37,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:02:37,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:02:37,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:02:37,665 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:02:37,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:02:37,666 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:02:37,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:02:37,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:02:37,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:02:37,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:02:37,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:02:37,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:02:37,667 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:02:37,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:02:37,667 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:02:37,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:02:37,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:02:37,668 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:02:37,668 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:02:37,668 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:02:37,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:02:37,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:02:37,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:02:37,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:02:37,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:02:37,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:02:37,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:02:37,670 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:02:37,950 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:02:37,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:02:37,964 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:02:37,966 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:02:37,966 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:02:37,967 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:38,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5459adf/95453c9ab95741628276c2acea636353/FLAG84ba1fa1e [2019-10-15 01:02:38,706 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:02:38,708 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:38,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5459adf/95453c9ab95741628276c2acea636353/FLAG84ba1fa1e [2019-10-15 01:02:38,859 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d5459adf/95453c9ab95741628276c2acea636353 [2019-10-15 01:02:38,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:02:38,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:02:38,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:38,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:02:38,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:02:38,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:38" (1/1) ... [2019-10-15 01:02:38,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26187d1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:38, skipping insertion in model container [2019-10-15 01:02:38,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:02:38" (1/1) ... [2019-10-15 01:02:38,885 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:02:38,997 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:02:40,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:40,330 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:02:40,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:02:40,793 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:02:40,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40 WrapperNode [2019-10-15 01:02:40,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:02:40,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:02:40,796 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:02:40,796 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:02:40,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:40,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:41,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:41,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (1/1) ... [2019-10-15 01:02:41,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:02:41,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:02:41,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:02:41,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:02:41,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (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 [2019-10-15 01:02:41,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2019-10-15 01:02:41,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-15 01:02:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-15 01:02:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-15 01:02:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-15 01:02:41,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-15 01:02:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-15 01:02:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-15 01:02:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-15 01:02:41,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-15 01:02:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-15 01:02:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-15 01:02:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-15 01:02:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-15 01:02:41,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-15 01:02:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-15 01:02:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2019-10-15 01:02:41,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2019-10-15 01:02:41,154 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2019-10-15 01:02:41,155 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2019-10-15 01:02:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2019-10-15 01:02:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2019-10-15 01:02:41,156 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2019-10-15 01:02:41,158 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2019-10-15 01:02:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2019-10-15 01:02:41,159 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2019-10-15 01:02:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2019-10-15 01:02:41,160 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2019-10-15 01:02:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-15 01:02:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-15 01:02:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:02:41,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-15 01:02:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2019-10-15 01:02:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-15 01:02:41,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2019-10-15 01:02:41,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2019-10-15 01:02:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2019-10-15 01:02:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2019-10-15 01:02:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2019-10-15 01:02:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-15 01:02:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-15 01:02:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-15 01:02:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2019-10-15 01:02:41,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2019-10-15 01:02:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2019-10-15 01:02:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-15 01:02:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-10-15 01:02:41,166 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-15 01:02:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-15 01:02:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2019-10-15 01:02:41,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-10-15 01:02:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2019-10-15 01:02:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-15 01:02:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2019-10-15 01:02:41,168 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2019-10-15 01:02:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-15 01:02:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2019-10-15 01:02:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2019-10-15 01:02:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2019-10-15 01:02:41,169 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2019-10-15 01:02:41,170 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-15 01:02:41,171 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-15 01:02:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-15 01:02:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-15 01:02:41,172 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-15 01:02:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2019-10-15 01:02:41,173 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-15 01:02:41,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-15 01:02:41,175 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-15 01:02:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-15 01:02:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-15 01:02:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-15 01:02:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-15 01:02:41,177 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-15 01:02:41,178 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-15 01:02:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-15 01:02:41,179 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-15 01:02:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:02:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-15 01:02:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-15 01:02:41,180 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2019-10-15 01:02:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2019-10-15 01:02:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2019-10-15 01:02:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2019-10-15 01:02:41,181 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2019-10-15 01:02:41,182 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2019-10-15 01:02:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-15 01:02:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2019-10-15 01:02:41,183 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-15 01:02:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2019-10-15 01:02:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2019-10-15 01:02:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2019-10-15 01:02:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2019-10-15 01:02:41,184 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-15 01:02:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-15 01:02:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-15 01:02:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-15 01:02:41,185 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-15 01:02:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:02:41,186 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:02:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:02:41,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-15 01:02:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-15 01:02:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:02:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:02:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-15 01:02:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-15 01:02:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-15 01:02:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-15 01:02:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-15 01:02:41,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-15 01:02:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-15 01:02:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-15 01:02:41,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-15 01:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-15 01:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-15 01:02:41,193 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-15 01:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:02:41,194 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-15 01:02:41,195 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-15 01:02:41,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-15 01:02:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2019-10-15 01:02:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-15 01:02:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-15 01:02:41,200 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-10-15 01:02:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-15 01:02:41,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2019-10-15 01:02:41,207 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-15 01:02:41,208 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-15 01:02:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-15 01:02:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-15 01:02:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2019-10-15 01:02:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-15 01:02:41,209 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2019-10-15 01:02:41,210 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2019-10-15 01:02:41,211 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2019-10-15 01:02:41,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-15 01:02:41,213 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-15 01:02:41,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-15 01:02:42,358 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-15 01:02:49,672 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:02:49,673 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-15 01:02:49,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:49 BoogieIcfgContainer [2019-10-15 01:02:49,675 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:02:49,676 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:02:49,676 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:02:49,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:02:49,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:02:38" (1/3) ... [2019-10-15 01:02:49,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d045f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:49, skipping insertion in model container [2019-10-15 01:02:49,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:02:40" (2/3) ... [2019-10-15 01:02:49,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54d045f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:02:49, skipping insertion in model container [2019-10-15 01:02:49,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:02:49" (3/3) ... [2019-10-15 01:02:49,685 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-15 01:02:49,696 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:02:49,711 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:02:49,725 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:02:49,776 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:02:49,776 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:02:49,776 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:02:49,776 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:02:49,777 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:02:49,777 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:02:49,777 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:02:49,777 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:02:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states. [2019-10-15 01:02:49,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-15 01:02:49,867 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:49,868 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:49,872 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:49,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:49,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1172024163, now seen corresponding path program 1 times [2019-10-15 01:02:49,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:49,894 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742558878] [2019-10-15 01:02:49,894 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:49,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:49,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:50,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-15 01:02:50,867 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742558878] [2019-10-15 01:02:50,868 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:50,868 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:50,868 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641258381] [2019-10-15 01:02:50,874 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:50,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:50,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:50,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:50,894 INFO L87 Difference]: Start difference. First operand 780 states. Second operand 3 states. [2019-10-15 01:02:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:51,407 INFO L93 Difference]: Finished difference Result 1595 states and 2142 transitions. [2019-10-15 01:02:51,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:51,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-10-15 01:02:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:51,450 INFO L225 Difference]: With dead ends: 1595 [2019-10-15 01:02:51,450 INFO L226 Difference]: Without dead ends: 820 [2019-10-15 01:02:51,464 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:51,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-10-15 01:02:51,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2019-10-15 01:02:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-15 01:02:51,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1087 transitions. [2019-10-15 01:02:51,633 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1087 transitions. Word has length 148 [2019-10-15 01:02:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:51,635 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1087 transitions. [2019-10-15 01:02:51,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:51,635 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1087 transitions. [2019-10-15 01:02:51,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-15 01:02:51,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:51,643 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:51,644 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:51,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:51,644 INFO L82 PathProgramCache]: Analyzing trace with hash -1887013182, now seen corresponding path program 1 times [2019-10-15 01:02:51,645 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:51,645 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978525263] [2019-10-15 01:02:51,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:51,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:51,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-10-15 01:02:52,077 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978525263] [2019-10-15 01:02:52,077 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:52,077 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:52,077 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108476395] [2019-10-15 01:02:52,081 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:52,082 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:52,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:52,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:52,083 INFO L87 Difference]: Start difference. First operand 820 states and 1087 transitions. Second operand 3 states. [2019-10-15 01:02:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:54,541 INFO L93 Difference]: Finished difference Result 1897 states and 2535 transitions. [2019-10-15 01:02:54,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:54,542 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-15 01:02:54,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:54,550 INFO L225 Difference]: With dead ends: 1897 [2019-10-15 01:02:54,550 INFO L226 Difference]: Without dead ends: 1124 [2019-10-15 01:02:54,554 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2019-10-15 01:02:54,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1121. [2019-10-15 01:02:54,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2019-10-15 01:02:54,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1468 transitions. [2019-10-15 01:02:54,604 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1468 transitions. Word has length 202 [2019-10-15 01:02:54,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:54,607 INFO L462 AbstractCegarLoop]: Abstraction has 1121 states and 1468 transitions. [2019-10-15 01:02:54,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:54,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1468 transitions. [2019-10-15 01:02:54,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-15 01:02:54,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:54,617 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:54,617 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:54,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:54,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1157226652, now seen corresponding path program 1 times [2019-10-15 01:02:54,618 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:54,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037290047] [2019-10-15 01:02:54,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:54,619 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:54,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:54,903 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-15 01:02:54,903 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037290047] [2019-10-15 01:02:54,904 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:54,904 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:54,904 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198323393] [2019-10-15 01:02:54,905 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:54,906 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:54,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:54,907 INFO L87 Difference]: Start difference. First operand 1121 states and 1468 transitions. Second operand 3 states. [2019-10-15 01:02:56,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:56,989 INFO L93 Difference]: Finished difference Result 2197 states and 2888 transitions. [2019-10-15 01:02:56,990 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:56,990 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-15 01:02:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:56,998 INFO L225 Difference]: With dead ends: 2197 [2019-10-15 01:02:56,999 INFO L226 Difference]: Without dead ends: 1123 [2019-10-15 01:02:57,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2019-10-15 01:02:57,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2019-10-15 01:02:57,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2019-10-15 01:02:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1470 transitions. [2019-10-15 01:02:57,055 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1470 transitions. Word has length 201 [2019-10-15 01:02:57,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:57,056 INFO L462 AbstractCegarLoop]: Abstraction has 1123 states and 1470 transitions. [2019-10-15 01:02:57,056 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:57,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1470 transitions. [2019-10-15 01:02:57,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-15 01:02:57,060 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:57,061 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:57,061 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:57,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:57,061 INFO L82 PathProgramCache]: Analyzing trace with hash 1837285022, now seen corresponding path program 1 times [2019-10-15 01:02:57,062 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:57,062 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632907966] [2019-10-15 01:02:57,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,062 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:57,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:02:57,605 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-15 01:02:57,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632907966] [2019-10-15 01:02:57,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:02:57,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:02:57,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894302108] [2019-10-15 01:02:57,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:02:57,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:02:57,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:02:57,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:57,608 INFO L87 Difference]: Start difference. First operand 1123 states and 1470 transitions. Second operand 3 states. [2019-10-15 01:02:59,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:02:59,620 INFO L93 Difference]: Finished difference Result 2153 states and 2835 transitions. [2019-10-15 01:02:59,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:02:59,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-15 01:02:59,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:02:59,632 INFO L225 Difference]: With dead ends: 2153 [2019-10-15 01:02:59,632 INFO L226 Difference]: Without dead ends: 2150 [2019-10-15 01:02:59,634 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:02:59,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-10-15 01:02:59,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2147. [2019-10-15 01:02:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2019-10-15 01:02:59,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2827 transitions. [2019-10-15 01:02:59,713 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2827 transitions. Word has length 201 [2019-10-15 01:02:59,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:02:59,714 INFO L462 AbstractCegarLoop]: Abstraction has 2147 states and 2827 transitions. [2019-10-15 01:02:59,714 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:02:59,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2827 transitions. [2019-10-15 01:02:59,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-15 01:02:59,720 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:02:59,721 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:02:59,721 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:02:59,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:02:59,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1308722831, now seen corresponding path program 1 times [2019-10-15 01:02:59,722 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:02:59,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580471446] [2019-10-15 01:02:59,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:59,722 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:02:59,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:02:59,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:00,000 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-15 01:03:00,000 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580471446] [2019-10-15 01:03:00,001 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:00,001 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:03:00,001 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958870720] [2019-10-15 01:03:00,002 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:03:00,002 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:00,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:03:00,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:00,003 INFO L87 Difference]: Start difference. First operand 2147 states and 2827 transitions. Second operand 3 states. [2019-10-15 01:03:02,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:02,788 INFO L93 Difference]: Finished difference Result 4854 states and 6431 transitions. [2019-10-15 01:03:02,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:02,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2019-10-15 01:03:02,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:02,814 INFO L225 Difference]: With dead ends: 4854 [2019-10-15 01:03:02,814 INFO L226 Difference]: Without dead ends: 2754 [2019-10-15 01:03:02,821 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:02,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2019-10-15 01:03:02,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2751. [2019-10-15 01:03:02,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2019-10-15 01:03:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3590 transitions. [2019-10-15 01:03:02,983 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3590 transitions. Word has length 224 [2019-10-15 01:03:02,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:02,985 INFO L462 AbstractCegarLoop]: Abstraction has 2751 states and 3590 transitions. [2019-10-15 01:03:02,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:03:02,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3590 transitions. [2019-10-15 01:03:02,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-15 01:03:02,995 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:02,996 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:02,997 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:02,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:02,997 INFO L82 PathProgramCache]: Analyzing trace with hash 681098177, now seen corresponding path program 1 times [2019-10-15 01:03:02,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:03,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649182043] [2019-10-15 01:03:03,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:03,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:03,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:03,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-10-15 01:03:03,420 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649182043] [2019-10-15 01:03:03,420 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:03,421 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:03:03,421 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115589863] [2019-10-15 01:03:03,422 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:03:03,423 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:03,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:03:03,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:03,423 INFO L87 Difference]: Start difference. First operand 2751 states and 3590 transitions. Second operand 3 states. [2019-10-15 01:03:05,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:05,985 INFO L93 Difference]: Finished difference Result 6080 states and 7969 transitions. [2019-10-15 01:03:05,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:05,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-15 01:03:05,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:06,007 INFO L225 Difference]: With dead ends: 6080 [2019-10-15 01:03:06,007 INFO L226 Difference]: Without dead ends: 3376 [2019-10-15 01:03:06,017 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:06,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2019-10-15 01:03:06,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3373. [2019-10-15 01:03:06,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2019-10-15 01:03:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4365 transitions. [2019-10-15 01:03:06,152 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4365 transitions. Word has length 253 [2019-10-15 01:03:06,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:06,153 INFO L462 AbstractCegarLoop]: Abstraction has 3373 states and 4365 transitions. [2019-10-15 01:03:06,153 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:03:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4365 transitions. [2019-10-15 01:03:06,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-15 01:03:06,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:06,163 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:06,164 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:06,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:06,164 INFO L82 PathProgramCache]: Analyzing trace with hash -561428123, now seen corresponding path program 1 times [2019-10-15 01:03:06,165 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:06,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537206092] [2019-10-15 01:03:06,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:06,165 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:06,165 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:06,778 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-10-15 01:03:06,779 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537206092] [2019-10-15 01:03:06,779 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:06,780 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:03:06,780 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618453956] [2019-10-15 01:03:06,781 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:03:06,781 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:06,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:03:06,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:03:06,782 INFO L87 Difference]: Start difference. First operand 3373 states and 4365 transitions. Second operand 4 states. [2019-10-15 01:03:09,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:09,893 INFO L93 Difference]: Finished difference Result 6699 states and 8711 transitions. [2019-10-15 01:03:09,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:09,894 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 307 [2019-10-15 01:03:09,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:09,916 INFO L225 Difference]: With dead ends: 6699 [2019-10-15 01:03:09,916 INFO L226 Difference]: Without dead ends: 3373 [2019-10-15 01:03:09,926 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:03:09,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2019-10-15 01:03:10,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3373. [2019-10-15 01:03:10,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2019-10-15 01:03:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4268 transitions. [2019-10-15 01:03:10,084 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4268 transitions. Word has length 307 [2019-10-15 01:03:10,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:10,085 INFO L462 AbstractCegarLoop]: Abstraction has 3373 states and 4268 transitions. [2019-10-15 01:03:10,086 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:03:10,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4268 transitions. [2019-10-15 01:03:10,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-15 01:03:10,098 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:10,099 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:10,100 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:10,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:10,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1596633947, now seen corresponding path program 1 times [2019-10-15 01:03:10,101 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:10,101 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728853008] [2019-10-15 01:03:10,101 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:10,102 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:10,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:10,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2019-10-15 01:03:10,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728853008] [2019-10-15 01:03:10,813 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:10,814 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 01:03:10,814 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261214536] [2019-10-15 01:03:10,815 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:03:10,815 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:10,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:03:10,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:03:10,816 INFO L87 Difference]: Start difference. First operand 3373 states and 4268 transitions. Second operand 8 states.