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-f4eb214f-m [2019-10-13 21:03:37,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:03:37,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:03:37,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:03:37,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:03:37,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:03:37,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:03:37,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:03:37,150 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:03:37,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:03:37,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:03:37,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:03:37,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:03:37,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:03:37,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:03:37,156 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:03:37,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:03:37,157 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:03:37,159 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:03:37,161 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:03:37,162 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:03:37,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:03:37,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:03:37,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:03:37,171 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:03:37,172 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:03:37,172 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:03:37,173 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:03:37,173 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:03:37,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:03:37,177 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:03:37,178 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:03:37,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:03:37,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:03:37,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:03:37,183 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:03:37,184 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:03:37,184 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:03:37,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:03:37,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:03:37,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:03:37,190 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 21:03:37,215 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:03:37,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:03:37,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:03:37,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:03:37,218 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:03:37,218 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:03:37,219 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:03:37,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:03:37,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:03:37,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:03:37,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:03:37,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:03:37,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:03:37,221 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:03:37,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:03:37,222 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:03:37,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:03:37,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:03:37,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:03:37,222 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:03:37,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:03:37,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:03:37,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:03:37,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:03:37,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:03:37,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:03:37,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:03:37,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:03:37,225 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 [2019-10-13 21:03:37,507 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:03:37,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:03:37,525 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:03:37,526 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:03:37,526 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:03:37,527 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:37,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8b7f081/13cec553192a4d2d849ad6c89136c67f/FLAG3c840b3fa [2019-10-13 21:03:38,313 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:03:38,314 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-10-13 21:03:38,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8b7f081/13cec553192a4d2d849ad6c89136c67f/FLAG3c840b3fa [2019-10-13 21:03:38,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd8b7f081/13cec553192a4d2d849ad6c89136c67f [2019-10-13 21:03:38,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:03:38,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:03:38,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:38,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:03:38,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:03:38,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:38" (1/1) ... [2019-10-13 21:03:38,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c66585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:38, skipping insertion in model container [2019-10-13 21:03:38,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:03:38" (1/1) ... [2019-10-13 21:03:38,443 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:03:38,558 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:03:39,684 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:39,716 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:03:40,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:03:40,228 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:03:40,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40 WrapperNode [2019-10-13 21:03:40,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:03:40,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:03:40,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:03:40,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:03:40,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,332 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,421 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (1/1) ... [2019-10-13 21:03:40,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:03:40,492 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:03:40,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:03:40,493 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:03:40,494 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (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 [2019-10-13 21:03:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:03:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:03:40,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2019-10-13 21:03:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-10-13 21:03:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-10-13 21:03:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-10-13 21:03:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-10-13 21:03:40,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-10-13 21:03:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-10-13 21:03:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-10-13 21:03:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-10-13 21:03:40,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-10-13 21:03:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-10-13 21:03:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-10-13 21:03:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-10-13 21:03:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-10-13 21:03:40,574 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-10-13 21:03:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-10-13 21:03:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2019-10-13 21:03:40,575 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-10-13 21:03:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-10-13 21:03:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-10-13 21:03:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2019-10-13 21:03:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2019-10-13 21:03:40,576 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2019-10-13 21:03:40,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2019-10-13 21:03:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2019-10-13 21:03:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2019-10-13 21:03:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2019-10-13 21:03:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2019-10-13 21:03:40,578 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 21:03:40,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2019-10-13 21:03:40,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-10-13 21:03:40,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-10-13 21:03:40,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2019-10-13 21:03:40,583 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-10-13 21:03:40,584 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-10-13 21:03:40,585 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-10-13 21:03:40,586 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-10-13 21:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-10-13 21:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-10-13 21:03:40,587 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-10-13 21:03:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:03:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-10-13 21:03:40,587 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2019-10-13 21:03:40,588 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2019-10-13 21:03:40,589 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-10-13 21:03:40,590 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:03:40,591 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-10-13 21:03:40,592 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-10-13 21:03:40,593 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-10-13 21:03:40,594 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2019-10-13 21:03:40,595 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:03:40,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-10-13 21:03:40,597 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2019-10-13 21:03:40,598 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2019-10-13 21:03:40,599 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-10-13 21:03:40,600 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:03:40,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:03:40,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-10-13 21:03:40,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-10-13 21:03:41,526 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-10-13 21:03:48,456 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:03:48,456 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 21:03:48,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:48 BoogieIcfgContainer [2019-10-13 21:03:48,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:03:48,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:03:48,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:03:48,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:03:48,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:03:38" (1/3) ... [2019-10-13 21:03:48,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c23093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:48, skipping insertion in model container [2019-10-13 21:03:48,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:03:40" (2/3) ... [2019-10-13 21:03:48,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58c23093 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:03:48, skipping insertion in model container [2019-10-13 21:03:48,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:03:48" (3/3) ... [2019-10-13 21:03:48,466 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 [2019-10-13 21:03:48,475 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:03:48,483 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:03:48,494 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:03:48,524 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:03:48,524 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:03:48,524 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:03:48,524 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:03:48,525 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:03:48,525 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:03:48,525 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:03:48,525 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:03:48,556 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states. [2019-10-13 21:03:48,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-10-13 21:03:48,577 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:48,579 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] [2019-10-13 21:03:48,581 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:48,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:48,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1172024163, now seen corresponding path program 1 times [2019-10-13 21:03:48,596 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:48,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321929417] [2019-10-13 21:03:48,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:48,597 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:48,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:49,451 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2019-10-13 21:03:49,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321929417] [2019-10-13 21:03:49,453 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:49,453 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:49,453 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840545542] [2019-10-13 21:03:49,459 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:49,461 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:49,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:49,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:49,481 INFO L87 Difference]: Start difference. First operand 780 states. Second operand 3 states. [2019-10-13 21:03:49,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:49,924 INFO L93 Difference]: Finished difference Result 1595 states and 2142 transitions. [2019-10-13 21:03:49,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:49,926 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2019-10-13 21:03:49,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:49,963 INFO L225 Difference]: With dead ends: 1595 [2019-10-13 21:03:49,964 INFO L226 Difference]: Without dead ends: 820 [2019-10-13 21:03:49,975 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 [2019-10-13 21:03:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2019-10-13 21:03:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2019-10-13 21:03:50,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 820 states. [2019-10-13 21:03:50,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1087 transitions. [2019-10-13 21:03:50,126 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1087 transitions. Word has length 148 [2019-10-13 21:03:50,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:50,128 INFO L462 AbstractCegarLoop]: Abstraction has 820 states and 1087 transitions. [2019-10-13 21:03:50,129 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:50,129 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1087 transitions. [2019-10-13 21:03:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:03:50,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:50,144 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] [2019-10-13 21:03:50,145 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:50,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:50,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1887013182, now seen corresponding path program 1 times [2019-10-13 21:03:50,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:50,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268748948] [2019-10-13 21:03:50,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:50,153 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:50,154 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:50,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:50,502 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2019-10-13 21:03:50,502 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268748948] [2019-10-13 21:03:50,503 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:50,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:50,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062648938] [2019-10-13 21:03:50,505 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:50,506 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:50,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:50,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:50,506 INFO L87 Difference]: Start difference. First operand 820 states and 1087 transitions. Second operand 3 states. [2019-10-13 21:03:53,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:53,022 INFO L93 Difference]: Finished difference Result 1897 states and 2535 transitions. [2019-10-13 21:03:53,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:53,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-13 21:03:53,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:53,031 INFO L225 Difference]: With dead ends: 1897 [2019-10-13 21:03:53,031 INFO L226 Difference]: Without dead ends: 1124 [2019-10-13 21:03:53,034 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 [2019-10-13 21:03:53,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2019-10-13 21:03:53,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1121. [2019-10-13 21:03:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2019-10-13 21:03:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1468 transitions. [2019-10-13 21:03:53,102 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1468 transitions. Word has length 202 [2019-10-13 21:03:53,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:53,104 INFO L462 AbstractCegarLoop]: Abstraction has 1121 states and 1468 transitions. [2019-10-13 21:03:53,104 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1468 transitions. [2019-10-13 21:03:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:03:53,110 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:53,110 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] [2019-10-13 21:03:53,110 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:53,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1157226652, now seen corresponding path program 1 times [2019-10-13 21:03:53,111 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:53,111 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390338840] [2019-10-13 21:03:53,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:53,112 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:53,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:53,527 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-13 21:03:53,528 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390338840] [2019-10-13 21:03:53,529 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:53,529 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:53,529 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935808846] [2019-10-13 21:03:53,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:53,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:53,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:53,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:53,532 INFO L87 Difference]: Start difference. First operand 1121 states and 1468 transitions. Second operand 3 states. [2019-10-13 21:03:55,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:55,606 INFO L93 Difference]: Finished difference Result 2197 states and 2888 transitions. [2019-10-13 21:03:55,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:55,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 21:03:55,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:55,613 INFO L225 Difference]: With dead ends: 2197 [2019-10-13 21:03:55,613 INFO L226 Difference]: Without dead ends: 1123 [2019-10-13 21:03:55,617 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 [2019-10-13 21:03:55,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2019-10-13 21:03:55,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1123. [2019-10-13 21:03:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1123 states. [2019-10-13 21:03:55,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1123 states to 1123 states and 1470 transitions. [2019-10-13 21:03:55,651 INFO L78 Accepts]: Start accepts. Automaton has 1123 states and 1470 transitions. Word has length 201 [2019-10-13 21:03:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:55,652 INFO L462 AbstractCegarLoop]: Abstraction has 1123 states and 1470 transitions. [2019-10-13 21:03:55,652 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states and 1470 transitions. [2019-10-13 21:03:55,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2019-10-13 21:03:55,656 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:55,656 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] [2019-10-13 21:03:55,657 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:55,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:55,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1837285022, now seen corresponding path program 1 times [2019-10-13 21:03:55,657 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:55,657 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869691678] [2019-10-13 21:03:55,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:55,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:55,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:55,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:56,027 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-13 21:03:56,028 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869691678] [2019-10-13 21:03:56,028 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:56,028 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:56,029 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655056169] [2019-10-13 21:03:56,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:56,030 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:56,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:56,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:56,030 INFO L87 Difference]: Start difference. First operand 1123 states and 1470 transitions. Second operand 3 states. [2019-10-13 21:03:57,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:03:57,910 INFO L93 Difference]: Finished difference Result 2153 states and 2835 transitions. [2019-10-13 21:03:57,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:03:57,910 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 201 [2019-10-13 21:03:57,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:03:57,921 INFO L225 Difference]: With dead ends: 2153 [2019-10-13 21:03:57,922 INFO L226 Difference]: Without dead ends: 2150 [2019-10-13 21:03:57,923 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 [2019-10-13 21:03:57,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2019-10-13 21:03:57,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2147. [2019-10-13 21:03:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2019-10-13 21:03:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 2827 transitions. [2019-10-13 21:03:57,994 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 2827 transitions. Word has length 201 [2019-10-13 21:03:57,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:03:57,995 INFO L462 AbstractCegarLoop]: Abstraction has 2147 states and 2827 transitions. [2019-10-13 21:03:57,995 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:03:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 2827 transitions. [2019-10-13 21:03:58,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2019-10-13 21:03:58,000 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:03:58,001 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] [2019-10-13 21:03:58,001 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:03:58,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:03:58,002 INFO L82 PathProgramCache]: Analyzing trace with hash 1308722831, now seen corresponding path program 1 times [2019-10-13 21:03:58,002 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:03:58,002 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776631335] [2019-10-13 21:03:58,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:58,002 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:03:58,003 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:03:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:03:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2019-10-13 21:03:58,457 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776631335] [2019-10-13 21:03:58,458 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:03:58,459 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:03:58,461 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585609590] [2019-10-13 21:03:58,462 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:03:58,462 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:03:58,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:03:58,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:03:58,463 INFO L87 Difference]: Start difference. First operand 2147 states and 2827 transitions. Second operand 3 states. [2019-10-13 21:04:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:00,811 INFO L93 Difference]: Finished difference Result 4854 states and 6431 transitions. [2019-10-13 21:04:00,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:00,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2019-10-13 21:04:00,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:00,837 INFO L225 Difference]: With dead ends: 4854 [2019-10-13 21:04:00,837 INFO L226 Difference]: Without dead ends: 2754 [2019-10-13 21:04:00,844 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 [2019-10-13 21:04:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2019-10-13 21:04:00,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2751. [2019-10-13 21:04:00,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2751 states. [2019-10-13 21:04:00,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2751 states to 2751 states and 3590 transitions. [2019-10-13 21:04:00,989 INFO L78 Accepts]: Start accepts. Automaton has 2751 states and 3590 transitions. Word has length 224 [2019-10-13 21:04:00,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:00,991 INFO L462 AbstractCegarLoop]: Abstraction has 2751 states and 3590 transitions. [2019-10-13 21:04:00,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:04:00,991 INFO L276 IsEmpty]: Start isEmpty. Operand 2751 states and 3590 transitions. [2019-10-13 21:04:00,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2019-10-13 21:04:00,998 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:00,998 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] [2019-10-13 21:04:00,998 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:00,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:00,999 INFO L82 PathProgramCache]: Analyzing trace with hash 681098177, now seen corresponding path program 1 times [2019-10-13 21:04:00,999 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:01,000 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663667970] [2019-10-13 21:04:01,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:01,000 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:01,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:01,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:01,295 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-10-13 21:04:01,296 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663667970] [2019-10-13 21:04:01,296 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:01,296 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:04:01,297 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272190810] [2019-10-13 21:04:01,298 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:04:01,298 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:01,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:04:01,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:04:01,299 INFO L87 Difference]: Start difference. First operand 2751 states and 3590 transitions. Second operand 3 states. [2019-10-13 21:04:03,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:03,740 INFO L93 Difference]: Finished difference Result 6080 states and 7969 transitions. [2019-10-13 21:04:03,740 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:03,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2019-10-13 21:04:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:03,759 INFO L225 Difference]: With dead ends: 6080 [2019-10-13 21:04:03,759 INFO L226 Difference]: Without dead ends: 3376 [2019-10-13 21:04:03,767 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 [2019-10-13 21:04:03,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3376 states. [2019-10-13 21:04:03,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3376 to 3373. [2019-10-13 21:04:03,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2019-10-13 21:04:03,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4365 transitions. [2019-10-13 21:04:03,925 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4365 transitions. Word has length 253 [2019-10-13 21:04:03,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:03,926 INFO L462 AbstractCegarLoop]: Abstraction has 3373 states and 4365 transitions. [2019-10-13 21:04:03,926 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:04:03,926 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4365 transitions. [2019-10-13 21:04:03,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-13 21:04:03,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:03,935 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] [2019-10-13 21:04:03,935 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:03,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:03,935 INFO L82 PathProgramCache]: Analyzing trace with hash -561428123, now seen corresponding path program 1 times [2019-10-13 21:04:03,936 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:03,936 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876765216] [2019-10-13 21:04:03,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:03,936 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:03,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:04,272 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-10-13 21:04:04,272 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876765216] [2019-10-13 21:04:04,273 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:04,273 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 21:04:04,273 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561747297] [2019-10-13 21:04:04,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 21:04:04,275 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:04,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 21:04:04,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 21:04:04,276 INFO L87 Difference]: Start difference. First operand 3373 states and 4365 transitions. Second operand 4 states. [2019-10-13 21:04:07,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:07,251 INFO L93 Difference]: Finished difference Result 6699 states and 8711 transitions. [2019-10-13 21:04:07,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:04:07,252 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 307 [2019-10-13 21:04:07,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:07,277 INFO L225 Difference]: With dead ends: 6699 [2019-10-13 21:04:07,277 INFO L226 Difference]: Without dead ends: 3373 [2019-10-13 21:04:07,287 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 [2019-10-13 21:04:07,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2019-10-13 21:04:07,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3373. [2019-10-13 21:04:07,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3373 states. [2019-10-13 21:04:07,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 4268 transitions. [2019-10-13 21:04:07,534 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 4268 transitions. Word has length 307 [2019-10-13 21:04:07,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:07,535 INFO L462 AbstractCegarLoop]: Abstraction has 3373 states and 4268 transitions. [2019-10-13 21:04:07,535 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 21:04:07,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 4268 transitions. [2019-10-13 21:04:07,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2019-10-13 21:04:07,551 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:07,552 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] [2019-10-13 21:04:07,553 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:07,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:07,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1596633947, now seen corresponding path program 1 times [2019-10-13 21:04:07,554 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:07,554 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375862556] [2019-10-13 21:04:07,554 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:07,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:07,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:07,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2019-10-13 21:04:08,347 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375862556] [2019-10-13 21:04:08,348 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:08,348 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-13 21:04:08,348 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412990861] [2019-10-13 21:04:08,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 21:04:08,351 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:08,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 21:04:08,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-13 21:04:08,352 INFO L87 Difference]: Start difference. First operand 3373 states and 4268 transitions. Second operand 8 states. [2019-10-13 21:04:12,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:04:12,784 INFO L93 Difference]: Finished difference Result 8166 states and 10302 transitions. [2019-10-13 21:04:12,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 21:04:12,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 307 [2019-10-13 21:04:12,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:04:12,809 INFO L225 Difference]: With dead ends: 8166 [2019-10-13 21:04:12,809 INFO L226 Difference]: Without dead ends: 4840 [2019-10-13 21:04:12,820 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-13 21:04:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4840 states. [2019-10-13 21:04:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4840 to 3381. [2019-10-13 21:04:12,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3381 states. [2019-10-13 21:04:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3381 states to 3381 states and 4276 transitions. [2019-10-13 21:04:12,976 INFO L78 Accepts]: Start accepts. Automaton has 3381 states and 4276 transitions. Word has length 307 [2019-10-13 21:04:12,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:04:12,979 INFO L462 AbstractCegarLoop]: Abstraction has 3381 states and 4276 transitions. [2019-10-13 21:04:12,979 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 21:04:12,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3381 states and 4276 transitions. [2019-10-13 21:04:12,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2019-10-13 21:04:12,989 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:04:12,990 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:04:12,990 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:04:12,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:04:12,990 INFO L82 PathProgramCache]: Analyzing trace with hash 875423763, now seen corresponding path program 1 times [2019-10-13 21:04:12,991 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:04:12,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111543141] [2019-10-13 21:04:12,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:12,991 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:04:12,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:04:13,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:04:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-10-13 21:04:13,432 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111543141] [2019-10-13 21:04:13,432 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:04:13,432 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 21:04:13,433 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281094219] [2019-10-13 21:04:13,435 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 21:04:13,435 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:04:13,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 21:04:13,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 21:04:13,438 INFO L87 Difference]: Start difference. First operand 3381 states and 4276 transitions. Second operand 5 states.