/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:14:07,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:14:07,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:14:07,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:14:07,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:14:07,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:14:07,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:14:07,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:14:07,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:14:07,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:14:07,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:14:07,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:14:07,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:14:07,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:14:07,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:14:07,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:14:07,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:14:07,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:14:07,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:14:07,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:14:07,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:14:07,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:14:07,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:14:07,253 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:14:07,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 23:14:07,256 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 23:14:07,256 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 23:14:07,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 23:14:07,257 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 23:14:07,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 23:14:07,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 23:14:07,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 23:14:07,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 23:14:07,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 23:14:07,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 23:14:07,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 23:14:07,262 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 23:14:07,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 23:14:07,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:14:07,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:14:07,264 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:14:07,265 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 23:14:07,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:14:07,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:14:07,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:14:07,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:14:07,288 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:14:07,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:14:07,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:14:07,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:14:07,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:14:07,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:14:07,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:14:07,289 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:14:07,289 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:14:07,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:14:07,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:14:07,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:14:07,290 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:14:07,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:14:07,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:14:07,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:14:07,291 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:14:07,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 23:14:07,292 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 23:14:07,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:14:07,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:14:07,613 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:14:07,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:14:07,619 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:14:07,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 23:14:07,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfc7f497/b564924315cd487893f3f4f169be6c36/FLAG16812972b [2020-08-18 23:14:08,389 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:14:08,390 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 23:14:08,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfc7f497/b564924315cd487893f3f4f169be6c36/FLAG16812972b [2020-08-18 23:14:08,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfc7f497/b564924315cd487893f3f4f169be6c36 [2020-08-18 23:14:08,932 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:14:08,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:14:08,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:14:08,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:14:08,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:14:08,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:14:08" (1/1) ... [2020-08-18 23:14:08,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e4b34bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:08, skipping insertion in model container [2020-08-18 23:14:08,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:14:08" (1/1) ... [2020-08-18 23:14:08,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:14:09,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:14:10,264 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:14:10,282 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:14:10,522 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:14:10,599 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:14:10,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10 WrapperNode [2020-08-18 23:14:10,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:14:10,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:14:10,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:14:10,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:14:10,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,737 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... [2020-08-18 23:14:10,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:14:10,761 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:14:10,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:14:10,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:14:10,763 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 23:14:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:14:10,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:14:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 23:14:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 23:14:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 23:14:10,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 23:14:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 23:14:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 23:14:10,835 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 23:14:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 23:14:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 23:14:10,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 23:14:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 23:14:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 23:14:10,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 23:14:10,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 23:14:10,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 23:14:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 23:14:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 23:14:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 23:14:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 23:14:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 23:14:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 23:14:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 23:14:10,842 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 23:14:10,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 23:14:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 23:14:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 23:14:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 23:14:10,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 23:14:10,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 23:14:10,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 23:14:10,847 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 23:14:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 23:14:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 23:14:10,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 23:14:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 23:14:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 23:14:10,849 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 23:14:10,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 23:14:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 23:14:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 23:14:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 23:14:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 23:14:10,851 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 23:14:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:14:10,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 23:14:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 23:14:10,853 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 23:14:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 23:14:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 23:14:10,854 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 23:14:10,855 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 23:14:10,856 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 23:14:10,857 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 23:14:10,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 23:14:10,859 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 23:14:10,860 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 23:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 23:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 23:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 23:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 23:14:10,861 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 23:14:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 23:14:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 23:14:10,862 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 23:14:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 23:14:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 23:14:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 23:14:10,864 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 23:14:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 23:14:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 23:14:10,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 23:14:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 23:14:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 23:14:10,866 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 23:14:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 23:14:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 23:14:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 23:14:10,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 23:14:10,927 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 23:14:10,928 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 23:14:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 23:14:10,929 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 23:14:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:14:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 23:14:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 23:14:10,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:14:12,005 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 23:14:12,669 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 23:14:13,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:14:13,139 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 23:14:13,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:14:13 BoogieIcfgContainer [2020-08-18 23:14:13,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:14:13,148 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:14:13,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:14:13,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:14:13,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:14:08" (1/3) ... [2020-08-18 23:14:13,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc9669e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:14:13, skipping insertion in model container [2020-08-18 23:14:13,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:14:10" (2/3) ... [2020-08-18 23:14:13,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc9669e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:14:13, skipping insertion in model container [2020-08-18 23:14:13,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:14:13" (3/3) ... [2020-08-18 23:14:13,154 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 23:14:13,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:14:13,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:14:13,192 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:14:13,218 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:14:13,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:14:13,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:14:13,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:14:13,219 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:14:13,219 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:14:13,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:14:13,219 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:14:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 23:14:13,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 23:14:13,257 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:13,258 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-18 23:14:13,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:13,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:13,265 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 23:14:13,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:13,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397669746] [2020-08-18 23:14:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,142 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:14,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:14,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:14,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 23:14:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 23:14:14,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 23:14:14,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397669746] [2020-08-18 23:14:14,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 23:14:14,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 23:14:14,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784877224] [2020-08-18 23:14:14,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 23:14:14,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:14,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 23:14:14,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 23:14:14,341 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 23:14:14,598 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:15,228 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 23:14:15,487 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 23:14:20,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:20,716 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 23:14:20,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:14:20,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 23:14:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:20,743 INFO L225 Difference]: With dead ends: 945 [2020-08-18 23:14:20,743 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 23:14:20,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:20,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 23:14:20,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 23:14:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 23:14:20,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 23:14:20,889 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 23:14:20,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:20,890 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 23:14:20,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 23:14:20,890 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 23:14:20,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 23:14:20,894 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:20,895 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:20,895 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:14:20,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:20,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:20,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 23:14:20,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:20,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691889061] [2020-08-18 23:14:20,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:20,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,283 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:21,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:21,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:21,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:21,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 23:14:21,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:21,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691889061] [2020-08-18 23:14:21,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:21,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:21,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796617258] [2020-08-18 23:14:21,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:21,419 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:21,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:21,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:21,420 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 23:14:21,704 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:22,354 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 23:14:23,454 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:14:30,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:30,458 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 23:14:30,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 23:14:30,459 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 23:14:30,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:30,468 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 23:14:30,469 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 23:14:30,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:30,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 23:14:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 23:14:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 23:14:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 23:14:30,584 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 23:14:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:30,585 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 23:14:30,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:14:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 23:14:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 23:14:30,588 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:30,588 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:30,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:14:30,589 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 23:14:30,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:30,590 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [132678204] [2020-08-18 23:14:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,014 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:31,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:14:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:14:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:31,168 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:31,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [132678204] [2020-08-18 23:14:31,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:31,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:31,169 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121507331] [2020-08-18 23:14:31,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:31,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:31,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:31,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:31,171 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 23:14:31,386 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:31,728 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 23:14:32,017 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:14:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:37,051 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 23:14:37,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:14:37,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 23:14:37,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:37,064 INFO L225 Difference]: With dead ends: 895 [2020-08-18 23:14:37,065 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 23:14:37,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:37,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 23:14:37,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 23:14:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 23:14:37,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 23:14:37,216 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 23:14:37,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:37,219 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 23:14:37,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:14:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 23:14:37,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 23:14:37,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:37,224 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:37,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:14:37,225 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:37,225 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 23:14:37,226 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:37,226 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127859174] [2020-08-18 23:14:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,676 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:37,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:37,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:14:37,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:14:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:37,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127859174] [2020-08-18 23:14:37,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:37,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:37,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353309355] [2020-08-18 23:14:37,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:37,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:37,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:37,850 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 23:14:38,083 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:38,410 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 23:14:38,679 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 23:14:45,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:45,592 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 23:14:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:14:45,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 23:14:45,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:45,602 INFO L225 Difference]: With dead ends: 894 [2020-08-18 23:14:45,603 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 23:14:45,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:45,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 23:14:45,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 23:14:45,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 23:14:45,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 23:14:45,741 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 23:14:45,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:45,743 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 23:14:45,744 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:14:45,744 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 23:14:45,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 23:14:45,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:45,749 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:45,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:14:45,751 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:45,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:45,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 23:14:45,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:45,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [686328491] [2020-08-18 23:14:45,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,081 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:46,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:46,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:14:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:14:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:46,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [686328491] [2020-08-18 23:14:46,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:46,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:46,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376340199] [2020-08-18 23:14:46,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:46,256 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:46,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:46,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:46,257 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 23:14:46,485 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:46,809 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 23:14:47,068 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:14:52,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:52,610 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 23:14:52,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:14:52,610 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 23:14:52,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:52,618 INFO L225 Difference]: With dead ends: 893 [2020-08-18 23:14:52,618 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 23:14:52,619 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:52,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 23:14:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 23:14:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 23:14:52,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 23:14:52,704 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 23:14:52,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:52,705 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 23:14:52,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:14:52,705 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 23:14:52,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 23:14:52,706 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:52,707 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:52,707 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:14:52,707 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:52,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 23:14:52,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:52,708 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1476115488] [2020-08-18 23:14:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:52,990 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:53,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:53,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:14:53,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:14:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:53,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1476115488] [2020-08-18 23:14:53,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:53,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:53,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491209670] [2020-08-18 23:14:53,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:53,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:53,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:53,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:53,132 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 23:14:53,362 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:53,663 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 23:14:53,916 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:14:58,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:14:58,781 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-18 23:14:58,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:14:58,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 23:14:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:14:58,788 INFO L225 Difference]: With dead ends: 892 [2020-08-18 23:14:58,788 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 23:14:58,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:14:58,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 23:14:58,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-18 23:14:58,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-18 23:14:58,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-18 23:14:58,882 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-18 23:14:58,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:14:58,883 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-18 23:14:58,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:14:58,883 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-18 23:14:58,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 23:14:58,884 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:14:58,884 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:14:58,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:14:58,885 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:14:58,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:14:58,885 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-18 23:14:58,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:14:58,885 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318740966] [2020-08-18 23:14:58,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:14:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,152 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 23:14:59,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:14:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 23:14:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 23:14:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 23:14:59,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 23:14:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 23:14:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 23:14:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 23:14:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:14:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 23:14:59,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318740966] [2020-08-18 23:14:59,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:14:59,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 23:14:59,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587222031] [2020-08-18 23:14:59,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 23:14:59,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:14:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 23:14:59,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 23:14:59,266 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-18 23:14:59,475 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 23:14:59,784 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 23:15:00,044 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 23:15:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:15:07,105 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-18 23:15:07,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 23:15:07,106 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-18 23:15:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:15:07,106 INFO L225 Difference]: With dead ends: 889 [2020-08-18 23:15:07,107 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 23:15:07,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 23:15:07,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 23:15:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 23:15:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 23:15:07,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 23:15:07,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-18 23:15:07,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:15:07,111 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 23:15:07,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 23:15:07,111 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 23:15:07,111 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 23:15:07,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:15:07,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 23:15:07,603 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-18 23:15:07,720 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30