/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=SHALLOWEST -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 20:48:54,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:48:54,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:48:54,915 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:48:54,915 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:48:54,917 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:48:54,918 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:48:54,920 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:48:54,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:48:54,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:48:54,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:48:54,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:48:54,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:48:54,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:48:54,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:48:54,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:48:54,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:48:54,930 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:48:54,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:48:54,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:48:54,935 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:48:54,936 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:48:54,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:48:54,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:48:54,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:48:54,941 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:48:54,941 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:48:54,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:48:54,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:48:54,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:48:54,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:48:54,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:48:54,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:48:54,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:48:54,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:48:54,947 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:48:54,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:48:54,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:48:54,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:48:54,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:48:54,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:48:54,952 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 20:48:54,974 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:48:54,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:48:54,975 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:48:54,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:48:54,976 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:48:54,976 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:48:54,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:48:54,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:48:54,977 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:48:54,978 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:48:54,978 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:48:54,978 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:48:54,978 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:48:54,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:48:54,979 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:48:54,979 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:48:54,979 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:48:54,979 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:48:54,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:48:54,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:48:54,980 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:48:54,980 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 20:48:54,980 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:48:55,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:48:55,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:48:55,320 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:48:55,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:48:55,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:48:55,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 20:48:55,390 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f3e5e04/3b90d872da5c43498981f694821e921f/FLAG15effd6ec [2020-08-18 20:48:56,107 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:48:56,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 20:48:56,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f3e5e04/3b90d872da5c43498981f694821e921f/FLAG15effd6ec [2020-08-18 20:48:56,161 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/55f3e5e04/3b90d872da5c43498981f694821e921f [2020-08-18 20:48:56,171 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:48:56,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:48:56,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:48:56,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:48:56,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:48:56,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:48:56" (1/1) ... [2020-08-18 20:48:56,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e27c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:56, skipping insertion in model container [2020-08-18 20:48:56,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:48:56" (1/1) ... [2020-08-18 20:48:56,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:48:56,310 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:48:57,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:48:57,750 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:48:57,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:48:58,014 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:48:58,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58 WrapperNode [2020-08-18 20:48:58,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:48:58,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:48:58,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:48:58,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:48:58,031 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,172 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (1/1) ... [2020-08-18 20:48:58,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:48:58,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:48:58,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:48:58,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:48:58,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (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 20:48:58,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:48:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:48:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 20:48:58,281 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 20:48:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 20:48:58,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 20:48:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 20:48:58,284 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 20:48:58,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 20:48:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 20:48:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 20:48:58,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 20:48:58,287 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 20:48:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 20:48:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 20:48:58,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 20:48:58,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 20:48:58,292 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 20:48:58,292 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 20:48:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 20:48:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 20:48:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 20:48:58,293 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 20:48:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 20:48:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 20:48:58,294 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 20:48:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 20:48:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 20:48:58,295 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 20:48:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 20:48:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 20:48:58,296 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 20:48:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 20:48:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 20:48:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:48:58,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 20:48:58,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 20:48:58,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 20:48:58,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 20:48:58,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 20:48:58,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 20:48:58,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 20:48:58,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 20:48:58,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 20:48:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 20:48:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 20:48:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 20:48:58,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 20:48:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 20:48:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 20:48:58,301 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 20:48:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 20:48:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 20:48:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 20:48:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 20:48:58,302 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 20:48:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 20:48:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 20:48:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 20:48:58,303 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 20:48:58,304 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 20:48:58,304 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 20:48:58,305 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 20:48:58,305 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 20:48:58,305 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 20:48:58,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 20:48:58,305 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 20:48:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 20:48:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 20:48:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 20:48:58,306 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 20:48:58,307 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 20:48:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:48:58,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 20:48:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 20:48:58,308 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 20:48:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 20:48:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:48:58,309 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 20:48:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 20:48:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:48:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 20:48:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 20:48:58,310 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 20:48:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 20:48:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 20:48:58,311 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 20:48:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 20:48:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 20:48:58,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 20:48:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 20:48:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:48:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:48:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:48:58,313 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 20:48:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 20:48:58,314 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:48:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 20:48:58,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 20:48:58,391 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 20:48:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 20:48:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 20:48:58,392 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 20:48:58,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 20:48:58,394 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:48:58,395 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 20:48:58,396 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 20:48:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 20:48:58,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 20:48:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 20:48:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 20:48:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 20:48:58,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:48:58,400 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 20:48:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 20:48:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 20:48:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 20:48:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 20:48:58,401 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 20:48:58,402 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 20:48:58,404 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 20:48:58,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 20:48:58,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:48:59,367 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 20:48:59,976 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 20:49:00,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:49:00,520 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 20:49:00,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:49:00 BoogieIcfgContainer [2020-08-18 20:49:00,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:49:00,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:49:00,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:49:00,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:49:00,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:48:56" (1/3) ... [2020-08-18 20:49:00,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f9a9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:49:00, skipping insertion in model container [2020-08-18 20:49:00,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:48:58" (2/3) ... [2020-08-18 20:49:00,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30f9a9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:49:00, skipping insertion in model container [2020-08-18 20:49:00,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:49:00" (3/3) ... [2020-08-18 20:49:00,536 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 20:49:00,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:49:00,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:49:00,571 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:49:00,599 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:49:00,599 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:49:00,599 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:49:00,599 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:49:00,600 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:49:00,600 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:49:00,600 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:49:00,600 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:49:00,636 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 20:49:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 20:49:00,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:00,656 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 20:49:00,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:00,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:00,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 20:49:00,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:00,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630147886] [2020-08-18 20:49:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,498 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:01,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:01,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 20:49:01,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 20:49:01,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:01,718 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 20:49:01,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630147886] [2020-08-18 20:49:01,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 20:49:01,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 20:49:01,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175570589] [2020-08-18 20:49:01,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 20:49:01,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:01,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 20:49:01,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 20:49:01,745 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 20:49:02,044 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:02,704 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 20:49:02,978 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 20:49:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:08,489 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 20:49:08,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:08,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 20:49:08,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:08,523 INFO L225 Difference]: With dead ends: 945 [2020-08-18 20:49:08,523 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 20:49:08,536 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 20:49:08,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 20:49:08,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 20:49:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 20:49:08,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 20:49:08,723 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 20:49:08,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:08,724 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 20:49:08,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 20:49:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 20:49:08,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 20:49:08,728 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:08,728 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 20:49:08,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:49:08,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 20:49:08,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:08,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1728530501] [2020-08-18 20:49:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,154 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:09,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:09,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 20:49:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:09,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:09,351 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 20:49:09,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1728530501] [2020-08-18 20:49:09,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:09,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:09,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553554488] [2020-08-18 20:49:09,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:09,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:09,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:09,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:09,355 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 20:49:09,578 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:10,256 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 20:49:11,468 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:49:17,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:17,594 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 20:49:17,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 20:49:17,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 20:49:17,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:17,606 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 20:49:17,606 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 20:49:17,610 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 20:49:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 20:49:17,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 20:49:17,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 20:49:17,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 20:49:17,783 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 20:49:17,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:17,783 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 20:49:17,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:17,784 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 20:49:17,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 20:49:17,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:17,787 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 20:49:17,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:49:17,787 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:17,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:17,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 20:49:17,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:17,788 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825682417] [2020-08-18 20:49:17,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,179 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:18,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:49:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:18,345 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 20:49:18,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825682417] [2020-08-18 20:49:18,346 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:18,346 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:18,346 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639156643] [2020-08-18 20:49:18,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:18,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:18,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:18,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:18,347 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 20:49:18,579 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:18,901 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 20:49:19,198 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:49:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:23,573 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 20:49:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:23,574 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 20:49:23,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:23,580 INFO L225 Difference]: With dead ends: 895 [2020-08-18 20:49:23,581 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 20:49:23,582 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 20:49:23,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 20:49:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 20:49:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 20:49:23,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 20:49:23,686 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 20:49:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:23,688 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 20:49:23,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 20:49:23,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 20:49:23,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:23,694 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 20:49:23,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:49:23,695 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:23,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 20:49:23,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:23,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634383657] [2020-08-18 20:49:23,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:23,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,128 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:24,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:24,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:24,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:24,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:24,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:49:24,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:24,288 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 20:49:24,289 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634383657] [2020-08-18 20:49:24,289 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:24,289 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:24,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852960767] [2020-08-18 20:49:24,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:24,290 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:24,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:24,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:24,291 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 20:49:24,493 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:24,831 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 20:49:25,108 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 20:49:30,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:30,963 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 20:49:30,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:30,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 20:49:30,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:30,970 INFO L225 Difference]: With dead ends: 894 [2020-08-18 20:49:30,971 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 20:49:30,972 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 20:49:30,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 20:49:31,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 20:49:31,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 20:49:31,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 20:49:31,064 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 20:49:31,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:31,065 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 20:49:31,065 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:31,065 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 20:49:31,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 20:49:31,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:31,066 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 20:49:31,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 20:49:31,067 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:31,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:31,067 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 20:49:31,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:31,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [79649948] [2020-08-18 20:49:31,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,422 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:31,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:31,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:31,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:31,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:49:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:31,564 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 20:49:31,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [79649948] [2020-08-18 20:49:31,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:31,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:31,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568984263] [2020-08-18 20:49:31,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:31,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:31,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:31,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:31,566 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 20:49:31,850 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:32,176 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 20:49:32,439 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:49:37,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:37,021 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 20:49:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:37,022 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 20:49:37,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:37,031 INFO L225 Difference]: With dead ends: 893 [2020-08-18 20:49:37,031 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 20:49:37,032 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 20:49:37,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 20:49:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 20:49:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 20:49:37,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 20:49:37,137 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 20:49:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:37,137 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 20:49:37,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:37,137 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 20:49:37,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 20:49:37,142 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:37,142 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 20:49:37,143 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 20:49:37,143 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:37,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:37,143 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 20:49:37,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:37,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2017230811] [2020-08-18 20:49:37,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:37,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,447 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:37,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:37,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:49:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:37,566 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 20:49:37,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2017230811] [2020-08-18 20:49:37,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:37,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:37,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177433878] [2020-08-18 20:49:37,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:37,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:37,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:37,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:37,569 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 20:49:37,810 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:38,110 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 20:49:38,422 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:49:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:42,539 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-18 20:49:42,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:42,540 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 20:49:42,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:42,546 INFO L225 Difference]: With dead ends: 892 [2020-08-18 20:49:42,546 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 20:49:42,547 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 20:49:42,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 20:49:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-18 20:49:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-18 20:49:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-18 20:49:42,633 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-18 20:49:42,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:42,634 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-18 20:49:42,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:42,634 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-18 20:49:42,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 20:49:42,635 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:49:42,636 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 20:49:42,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 20:49:42,636 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:49:42,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:49:42,636 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-18 20:49:42,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:49:42,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112495936] [2020-08-18 20:49:42,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:49:42,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,944 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 20:49:42,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:49:42,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 20:49:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 20:49:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 20:49:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 20:49:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 20:49:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 20:49:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 20:49:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:49:43,087 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 20:49:43,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112495936] [2020-08-18 20:49:43,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:49:43,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 20:49:43,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372893982] [2020-08-18 20:49:43,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 20:49:43,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:49:43,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 20:49:43,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 20:49:43,090 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-18 20:49:43,313 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 20:49:43,640 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 20:49:43,923 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 20:49:49,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:49:49,781 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-18 20:49:49,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 20:49:49,782 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-18 20:49:49,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:49:49,782 INFO L225 Difference]: With dead ends: 889 [2020-08-18 20:49:49,783 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:49:49,787 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 20:49:49,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:49:49,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:49:49,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:49:49,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:49:49,788 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-18 20:49:49,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:49:49,788 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:49:49,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 20:49:49,789 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:49:49,789 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:49:49,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 20:49:49,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:49:50,284 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-18 20:49:50,431 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30 [2020-08-18 20:49:55,088 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 1 [2020-08-18 20:49:55,331 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 39 [2020-08-18 20:49:55,770 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30 [2020-08-18 20:49:56,224 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 30