/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -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-fb55353 [2019-11-07 03:52:35,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 03:52:35,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 03:52:35,147 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 03:52:35,147 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 03:52:35,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 03:52:35,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 03:52:35,164 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 03:52:35,166 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 03:52:35,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 03:52:35,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 03:52:35,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 03:52:35,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 03:52:35,175 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 03:52:35,177 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 03:52:35,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 03:52:35,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 03:52:35,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 03:52:35,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 03:52:35,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 03:52:35,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 03:52:35,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 03:52:35,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 03:52:35,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 03:52:35,202 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 03:52:35,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 03:52:35,203 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 03:52:35,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 03:52:35,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 03:52:35,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 03:52:35,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 03:52:35,211 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 03:52:35,212 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 03:52:35,212 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 03:52:35,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 03:52:35,214 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 03:52:35,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 03:52:35,215 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 03:52:35,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 03:52:35,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 03:52:35,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 03:52:35,219 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 03:52:35,240 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 03:52:35,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 03:52:35,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 03:52:35,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 03:52:35,242 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 03:52:35,242 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 03:52:35,242 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 03:52:35,245 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 03:52:35,245 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 03:52:35,245 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 03:52:35,245 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 03:52:35,245 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 03:52:35,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 03:52:35,246 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 03:52:35,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 03:52:35,246 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 03:52:35,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 03:52:35,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 03:52:35,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 03:52:35,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 03:52:35,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 03:52:35,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:52:35,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 03:52:35,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 03:52:35,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 03:52:35,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 03:52:35,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 03:52:35,249 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 03:52:35,249 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-11-07 03:52:35,537 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 03:52:35,559 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 03:52:35,563 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 03:52:35,564 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 03:52:35,564 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 03:52:35,565 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:52:35,634 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ea76b6/32373b5a703b42cb8430da0400270579/FLAGbe41261d7 [2019-11-07 03:52:36,322 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 03:52:36,324 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-validator-v0.8/linux-stable-1dfa93a-1-100_1a-drivers--usb--serial--kobil_sct.ko-entry_point_ldv-val-v0.8.cil.out.i [2019-11-07 03:52:36,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ea76b6/32373b5a703b42cb8430da0400270579/FLAGbe41261d7 [2019-11-07 03:52:36,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/330ea76b6/32373b5a703b42cb8430da0400270579 [2019-11-07 03:52:36,459 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 03:52:36,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 03:52:36,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 03:52:36,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 03:52:36,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 03:52:36,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:36" (1/1) ... [2019-11-07 03:52:36,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c237ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:36, skipping insertion in model container [2019-11-07 03:52:36,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:52:36" (1/1) ... [2019-11-07 03:52:36,477 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 03:52:36,592 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 03:52:37,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:52:37,902 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 03:52:38,371 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 03:52:38,470 INFO L192 MainTranslator]: Completed translation [2019-11-07 03:52:38,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38 WrapperNode [2019-11-07 03:52:38,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 03:52:38,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 03:52:38,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 03:52:38,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 03:52:38,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,663 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... [2019-11-07 03:52:38,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 03:52:38,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 03:52:38,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 03:52:38,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 03:52:38,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 03:52:38,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 03:52:38,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 03:52:38,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_4 [2019-11-07 03:52:38,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2019-11-07 03:52:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2019-11-07 03:52:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2019-11-07 03:52:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 03:52:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2019-11-07 03:52:38,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2019-11-07 03:52:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2019-11-07 03:52:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2019-11-07 03:52:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2019-11-07 03:52:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2019-11-07 03:52:38,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2019-11-07 03:52:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2019-11-07 03:52:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_out [2019-11-07 03:52:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2019-11-07 03:52:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_in [2019-11-07 03:52:38,806 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_int_out [2019-11-07 03:52:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register [2019-11-07 03:52:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2019-11-07 03:52:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2019-11-07 03:52:38,807 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_serial_port_data [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_serial_port_data [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_debug_data [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_startup [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_release [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init_termios [2019-11-07 03:52:38,808 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_open [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_close [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_read_int_callback [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_callback [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_write_room [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmget [2019-11-07 03:52:38,809 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_tiocmset [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_set_termios [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_ioctl [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_init [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure kobil_exit [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_usb_serial_driver_1 [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_2 [2019-11-07 03:52:38,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_flags_3 [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_6 [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_port_tty_get_7 [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_flip_buffer_push_8 [2019-11-07 03:52:38,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_get_baud_rate_9 [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_tty_encode_baud_rate_10 [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_11 [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_got_tty [2019-11-07 03:52:38,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_tty [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_detach_1 [2019-11-07 03:52:38,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_probe_1 [2019-11-07 03:52:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2019-11-07 03:52:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2019-11-07 03:52:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_encode_baud_rate [2019-11-07 03:52:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_flip_buffer_push [2019-11-07 03:52:38,814 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_get_baud_rate [2019-11-07 03:52:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_fixed_flag [2019-11-07 03:52:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_insert_flip_string_flags [2019-11-07 03:52:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_kref_put [2019-11-07 03:52:38,815 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_get [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2019-11-07 03:52:38,816 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_poison_urb [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_driver [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_disconnect [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_probe [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_register [2019-11-07 03:52:38,817 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2019-11-07 03:52:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure external_alloc [2019-11-07 03:52:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2019-11-07 03:52:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2019-11-07 03:52:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2019-11-07 03:52:38,818 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2019-11-07 03:52:38,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 03:52:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2019-11-07 03:52:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2019-11-07 03:52:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2019-11-07 03:52:38,819 INFO L130 BoogieDeclarations]: Found specification of procedure tty_kref_put [2019-11-07 03:52:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure tty_flip_buffer_push [2019-11-07 03:52:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_flip_buffer_push_8 [2019-11-07 03:52:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure tty_get_baud_rate [2019-11-07 03:52:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_get_baud_rate_9 [2019-11-07 03:52:38,820 INFO L130 BoogieDeclarations]: Found specification of procedure tty_encode_baud_rate [2019-11-07 03:52:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_encode_baud_rate_10 [2019-11-07 03:52:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_get [2019-11-07 03:52:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_port_tty_get_7 [2019-11-07 03:52:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_flags [2019-11-07 03:52:38,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_flags_3 [2019-11-07 03:52:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string_fixed_flag [2019-11-07 03:52:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_fixed_flag_5 [2019-11-07 03:52:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_tty_insert_flip_string_4 [2019-11-07 03:52:38,822 INFO L130 BoogieDeclarations]: Found specification of procedure tty_insert_flip_string [2019-11-07 03:52:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_got_tty [2019-11-07 03:52:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_tty [2019-11-07 03:52:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2019-11-07 03:52:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 03:52:38,823 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 03:52:38,824 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2019-11-07 03:52:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 03:52:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 03:52:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 03:52:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2019-11-07 03:52:38,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2019-11-07 03:52:38,826 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2019-11-07 03:52:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_usb_serial_driver_1 [2019-11-07 03:52:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_2 [2019-11-07 03:52:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2019-11-07 03:52:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 03:52:38,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_out [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_in [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_int_out [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2019-11-07 03:52:38,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_6 [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_11 [2019-11-07 03:52:38,829 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2019-11-07 03:52:38,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2019-11-07 03:52:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_poison_urb [2019-11-07 03:52:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2019-11-07 03:52:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2019-11-07 03:52:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_serial_port_data [2019-11-07 03:52:38,831 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_serial_port_data [2019-11-07 03:52:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_register [2019-11-07 03:52:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2019-11-07 03:52:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_probe [2019-11-07 03:52:38,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_disconnect [2019-11-07 03:52:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_debug_data [2019-11-07 03:52:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_startup [2019-11-07 03:52:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_release [2019-11-07 03:52:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_open [2019-11-07 03:52:38,833 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_close [2019-11-07 03:52:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write [2019-11-07 03:52:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_room [2019-11-07 03:52:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_ioctl [2019-11-07 03:52:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmget [2019-11-07 03:52:38,834 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_tiocmset [2019-11-07 03:52:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_read_int_callback [2019-11-07 03:52:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_write_callback [2019-11-07 03:52:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_set_termios [2019-11-07 03:52:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init_termios [2019-11-07 03:52:38,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_init [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure kobil_exit [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_probe_1 [2019-11-07 03:52:38,836 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_detach_1 [2019-11-07 03:52:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 03:52:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 03:52:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 03:52:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 03:52:38,837 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2019-11-07 03:52:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2019-11-07 03:52:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure external_alloc [2019-11-07 03:52:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-11-07 03:52:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 03:52:38,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 03:52:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 03:52:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 03:52:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 03:52:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-07 03:52:38,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-07 03:52:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-07 03:52:38,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-07 03:52:40,081 INFO L688 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2019-11-07 03:52:53,547 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 03:52:53,547 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-07 03:52:53,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:53 BoogieIcfgContainer [2019-11-07 03:52:53,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 03:52:53,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 03:52:53,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 03:52:53,556 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 03:52:53,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:52:36" (1/3) ... [2019-11-07 03:52:53,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2147cd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:53, skipping insertion in model container [2019-11-07 03:52:53,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:52:38" (2/3) ... [2019-11-07 03:52:53,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2147cd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:52:53, skipping insertion in model container [2019-11-07 03:52:53,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:52:53" (3/3) ... [2019-11-07 03:52:53,560 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 [2019-11-07 03:52:53,570 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 03:52:53,583 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 03:52:53,594 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 03:52:53,642 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 03:52:53,642 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 03:52:53,642 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 03:52:53,642 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 03:52:53,642 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 03:52:53,642 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 03:52:53,643 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 03:52:53,643 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 03:52:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states. [2019-11-07 03:52:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2019-11-07 03:52:53,716 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:53,717 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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] [2019-11-07 03:52:53,720 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:53,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:53,725 INFO L82 PathProgramCache]: Analyzing trace with hash 1248946661, now seen corresponding path program 1 times [2019-11-07 03:52:53,735 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:53,735 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244028093] [2019-11-07 03:52:53,736 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-11-07 03:52:54,582 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244028093] [2019-11-07 03:52:54,583 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:54,583 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:52:54,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48910621] [2019-11-07 03:52:54,589 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:52:54,590 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:54,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:52:54,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:54,607 INFO L87 Difference]: Start difference. First operand 611 states. Second operand 3 states. [2019-11-07 03:52:55,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:55,067 INFO L93 Difference]: Finished difference Result 1250 states and 1645 transitions. [2019-11-07 03:52:55,068 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:52:55,069 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 121 [2019-11-07 03:52:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:55,104 INFO L225 Difference]: With dead ends: 1250 [2019-11-07 03:52:55,104 INFO L226 Difference]: Without dead ends: 644 [2019-11-07 03:52:55,113 INFO L630 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 [2019-11-07 03:52:55,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2019-11-07 03:52:55,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 644. [2019-11-07 03:52:55,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2019-11-07 03:52:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 834 transitions. [2019-11-07 03:52:55,226 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 834 transitions. Word has length 121 [2019-11-07 03:52:55,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:55,229 INFO L462 AbstractCegarLoop]: Abstraction has 644 states and 834 transitions. [2019-11-07 03:52:55,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:52:55,232 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 834 transitions. [2019-11-07 03:52:55,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 03:52:55,248 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:55,249 INFO L410 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 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] [2019-11-07 03:52:55,253 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:55,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:55,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1512316019, now seen corresponding path program 1 times [2019-11-07 03:52:55,254 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:55,254 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274355249] [2019-11-07 03:52:55,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:55,657 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2019-11-07 03:52:55,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274355249] [2019-11-07 03:52:55,657 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:55,658 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 03:52:55,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813701799] [2019-11-07 03:52:55,660 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:52:55,660 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:55,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:52:55,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 03:52:55,661 INFO L87 Difference]: Start difference. First operand 644 states and 834 transitions. Second operand 6 states. [2019-11-07 03:52:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:52:57,696 INFO L93 Difference]: Finished difference Result 1851 states and 2400 transitions. [2019-11-07 03:52:57,697 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 03:52:57,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 171 [2019-11-07 03:52:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:52:57,712 INFO L225 Difference]: With dead ends: 1851 [2019-11-07 03:52:57,712 INFO L226 Difference]: Without dead ends: 1218 [2019-11-07 03:52:57,716 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2019-11-07 03:52:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2019-11-07 03:52:57,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 1213. [2019-11-07 03:52:57,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2019-11-07 03:52:57,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1573 transitions. [2019-11-07 03:52:57,813 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1573 transitions. Word has length 171 [2019-11-07 03:52:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:52:57,813 INFO L462 AbstractCegarLoop]: Abstraction has 1213 states and 1573 transitions. [2019-11-07 03:52:57,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 03:52:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1573 transitions. [2019-11-07 03:52:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-11-07 03:52:57,821 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:52:57,822 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:52:57,822 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:52:57,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:52:57,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1749452105, now seen corresponding path program 1 times [2019-11-07 03:52:57,823 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:52:57,823 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689662149] [2019-11-07 03:52:57,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:52:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:52:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-07 03:52:58,439 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689662149] [2019-11-07 03:52:58,439 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:52:58,439 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:52:58,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485696196] [2019-11-07 03:52:58,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:52:58,440 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:52:58,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:52:58,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:52:58,441 INFO L87 Difference]: Start difference. First operand 1213 states and 1573 transitions. Second operand 3 states. [2019-11-07 03:53:00,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:00,760 INFO L93 Difference]: Finished difference Result 2311 states and 3019 transitions. [2019-11-07 03:53:00,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:00,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-11-07 03:53:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:00,781 INFO L225 Difference]: With dead ends: 2311 [2019-11-07 03:53:00,781 INFO L226 Difference]: Without dead ends: 2308 [2019-11-07 03:53:00,783 INFO L630 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 [2019-11-07 03:53:00,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2308 states. [2019-11-07 03:53:00,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2308 to 2239. [2019-11-07 03:53:00,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2239 states. [2019-11-07 03:53:00,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 2932 transitions. [2019-11-07 03:53:00,917 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 2932 transitions. Word has length 193 [2019-11-07 03:53:00,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:00,918 INFO L462 AbstractCegarLoop]: Abstraction has 2239 states and 2932 transitions. [2019-11-07 03:53:00,918 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 2932 transitions. [2019-11-07 03:53:00,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 03:53:00,926 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:00,926 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:53:00,926 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:00,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:00,927 INFO L82 PathProgramCache]: Analyzing trace with hash 1759131856, now seen corresponding path program 1 times [2019-11-07 03:53:00,928 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:00,928 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585370629] [2019-11-07 03:53:00,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:01,238 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2019-11-07 03:53:01,238 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585370629] [2019-11-07 03:53:01,239 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:01,239 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:01,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343598584] [2019-11-07 03:53:01,240 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:01,241 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:01,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:01,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:01,243 INFO L87 Difference]: Start difference. First operand 2239 states and 2932 transitions. Second operand 3 states. [2019-11-07 03:53:03,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:03,877 INFO L93 Difference]: Finished difference Result 5366 states and 7063 transitions. [2019-11-07 03:53:03,877 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:03,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 192 [2019-11-07 03:53:03,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:03,902 INFO L225 Difference]: With dead ends: 5366 [2019-11-07 03:53:03,902 INFO L226 Difference]: Without dead ends: 3168 [2019-11-07 03:53:03,913 INFO L630 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 [2019-11-07 03:53:03,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2019-11-07 03:53:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3097. [2019-11-07 03:53:04,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3097 states. [2019-11-07 03:53:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3097 states to 3097 states and 3974 transitions. [2019-11-07 03:53:04,059 INFO L78 Accepts]: Start accepts. Automaton has 3097 states and 3974 transitions. Word has length 192 [2019-11-07 03:53:04,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:04,061 INFO L462 AbstractCegarLoop]: Abstraction has 3097 states and 3974 transitions. [2019-11-07 03:53:04,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:04,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3097 states and 3974 transitions. [2019-11-07 03:53:04,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 03:53:04,066 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:04,067 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 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, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 03:53:04,067 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:04,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:04,067 INFO L82 PathProgramCache]: Analyzing trace with hash -504692545, now seen corresponding path program 1 times [2019-11-07 03:53:04,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:04,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650900763] [2019-11-07 03:53:04,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2019-11-07 03:53:04,435 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650900763] [2019-11-07 03:53:04,437 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 03:53:04,437 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 03:53:04,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045340225] [2019-11-07 03:53:04,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 03:53:04,440 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:04,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 03:53:04,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 03:53:04,442 INFO L87 Difference]: Start difference. First operand 3097 states and 3974 transitions. Second operand 3 states. [2019-11-07 03:53:07,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 03:53:07,039 INFO L93 Difference]: Finished difference Result 7014 states and 9079 transitions. [2019-11-07 03:53:07,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 03:53:07,040 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 214 [2019-11-07 03:53:07,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 03:53:07,078 INFO L225 Difference]: With dead ends: 7014 [2019-11-07 03:53:07,079 INFO L226 Difference]: Without dead ends: 3958 [2019-11-07 03:53:07,091 INFO L630 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 [2019-11-07 03:53:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2019-11-07 03:53:07,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3955. [2019-11-07 03:53:07,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3955 states. [2019-11-07 03:53:07,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5016 transitions. [2019-11-07 03:53:07,305 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5016 transitions. Word has length 214 [2019-11-07 03:53:07,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 03:53:07,307 INFO L462 AbstractCegarLoop]: Abstraction has 3955 states and 5016 transitions. [2019-11-07 03:53:07,308 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 03:53:07,308 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5016 transitions. [2019-11-07 03:53:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-11-07 03:53:07,315 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 03:53:07,316 INFO L410 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 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] [2019-11-07 03:53:07,316 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 03:53:07,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 03:53:07,317 INFO L82 PathProgramCache]: Analyzing trace with hash 1450024003, now seen corresponding path program 1 times [2019-11-07 03:53:07,317 INFO L161 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-07 03:53:07,318 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093690654] [2019-11-07 03:53:07,318 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 03:53:07,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 15 proven. 5 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2019-11-07 03:53:07,819 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093690654] [2019-11-07 03:53:07,819 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553044472] [2019-11-07 03:53:07,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 03:53:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 03:53:08,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 3696 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 03:53:09,022 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 03:53:09,111 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 03:53:09,169 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 203 trivial. 0 not checked. [2019-11-07 03:53:09,169 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 03:53:09,517 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2019-11-07 03:53:09,518 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 03:53:09,518 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [4] total 7 [2019-11-07 03:53:09,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321061724] [2019-11-07 03:53:09,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 03:53:09,524 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-07 03:53:09,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 03:53:09,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2019-11-07 03:53:09,525 INFO L87 Difference]: Start difference. First operand 3955 states and 5016 transitions. Second operand 6 states.