/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-22 05:10:32,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:10:32,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:10:32,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:10:32,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:10:32,647 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:10:32,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:10:32,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:10:32,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:10:32,653 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:10:32,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:10:32,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:10:32,655 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:10:32,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:10:32,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:10:32,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:10:32,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:10:32,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:10:32,661 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:10:32,663 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:10:32,664 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:10:32,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:10:32,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:10:32,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:10:32,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:10:32,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:10:32,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:10:32,671 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:10:32,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:10:32,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:10:32,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:10:32,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:10:32,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:10:32,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:10:32,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:10:32,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:10:32,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:10:32,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:10:32,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:10:32,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:10:32,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:10:32,679 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 [2020-08-22 05:10:32,702 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:10:32,702 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:10:32,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:10:32,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:10:32,704 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:10:32,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:10:32,704 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:10:32,704 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:10:32,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:10:32,705 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:10:32,705 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:10:32,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:10:32,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:10:32,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:10:32,706 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:10:32,706 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:10:32,706 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:10:32,706 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:10:32,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:10:32,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:10:32,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:10:32,707 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:10:32,707 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:10:32,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:10:32,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:10:32,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:10:32,708 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 05:10:32,708 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 05:10:32,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:10:33,002 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:10:33,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:10:33,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:10:33,007 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:10:33,008 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 05:10:33,082 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf6ca63/1c93ffb0b96949cb99d521e571039510/FLAGb5a97829a [2020-08-22 05:10:33,803 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:10:33,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-22 05:10:33,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf6ca63/1c93ffb0b96949cb99d521e571039510/FLAGb5a97829a [2020-08-22 05:10:33,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fbf6ca63/1c93ffb0b96949cb99d521e571039510 [2020-08-22 05:10:33,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:10:33,890 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:10:33,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:33,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:10:33,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:10:33,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:33" (1/1) ... [2020-08-22 05:10:33,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39d2791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:33, skipping insertion in model container [2020-08-22 05:10:33,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:10:33" (1/1) ... [2020-08-22 05:10:33,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:10:34,041 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:10:35,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:35,511 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:10:35,767 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:10:35,851 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:10:35,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35 WrapperNode [2020-08-22 05:10:35,852 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:10:35,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:10:35,853 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:10:35,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:10:35,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:35,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:35,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:35,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:35,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:36,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:36,020 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (1/1) ... [2020-08-22 05:10:36,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:10:36,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:10:36,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:10:36,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:10:36,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (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 [2020-08-22 05:10:36,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:10:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:10:36,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:10:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-22 05:10:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-22 05:10:36,140 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-22 05:10:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-22 05:10:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-22 05:10:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 05:10:36,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-22 05:10:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-22 05:10:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-22 05:10:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-22 05:10:36,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-22 05:10:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-22 05:10:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-22 05:10:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-22 05:10:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-22 05:10:36,144 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-22 05:10:36,145 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-22 05:10:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-22 05:10:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-22 05:10:36,146 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-22 05:10:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-22 05:10:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-22 05:10:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-22 05:10:36,147 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-22 05:10:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-22 05:10:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-22 05:10:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-22 05:10:36,148 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-22 05:10:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-22 05:10:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 05:10:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-22 05:10:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:10:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-22 05:10:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-22 05:10:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-22 05:10:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-22 05:10:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-22 05:10:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-22 05:10:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-22 05:10:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-22 05:10:36,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-22 05:10:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-22 05:10:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-22 05:10:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-22 05:10:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-22 05:10:36,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-22 05:10:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-22 05:10:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-22 05:10:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-22 05:10:36,153 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-22 05:10:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-22 05:10:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-22 05:10:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-22 05:10:36,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-22 05:10:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-22 05:10:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-22 05:10:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-22 05:10:36,155 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-22 05:10:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-22 05:10:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-22 05:10:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-22 05:10:36,156 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-22 05:10:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-22 05:10:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-22 05:10:36,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-22 05:10:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-22 05:10:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-22 05:10:36,158 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-22 05:10:36,159 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-22 05:10:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:10:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-22 05:10:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-22 05:10:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-22 05:10:36,159 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-22 05:10:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 05:10:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-22 05:10:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-22 05:10:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 05:10:36,160 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-22 05:10:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-22 05:10:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-22 05:10:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-22 05:10:36,161 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-22 05:10:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-22 05:10:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-22 05:10:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-22 05:10:36,162 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-22 05:10:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-22 05:10:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 05:10:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 05:10:36,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 05:10:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-22 05:10:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-22 05:10:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 05:10:36,164 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 05:10:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 05:10:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-22 05:10:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-22 05:10:36,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-22 05:10:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-22 05:10:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-22 05:10:36,166 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-22 05:10:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-22 05:10:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-22 05:10:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-22 05:10:36,167 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-22 05:10:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-22 05:10:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-22 05:10:36,168 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-22 05:10:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-22 05:10:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-22 05:10:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-22 05:10:36,169 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-22 05:10:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-22 05:10:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-22 05:10:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-22 05:10:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-22 05:10:36,170 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-22 05:10:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-22 05:10:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-22 05:10:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-22 05:10:36,171 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-22 05:10:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:10:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:10:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:10:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-22 05:10:36,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:10:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-22 05:10:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-22 05:10:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-22 05:10:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-22 05:10:36,173 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-22 05:10:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-22 05:10:36,174 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-22 05:10:36,266 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-22 05:10:36,268 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-22 05:10:36,269 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-22 05:10:36,270 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 05:10:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:10:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:10:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-22 05:10:36,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:10:37,264 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-22 05:10:37,849 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-22 05:10:38,337 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:10:38,337 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:10:38,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:38 BoogieIcfgContainer [2020-08-22 05:10:38,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:10:38,346 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:10:38,346 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:10:38,350 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:10:38,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:10:33" (1/3) ... [2020-08-22 05:10:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422a9523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:38, skipping insertion in model container [2020-08-22 05:10:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:10:35" (2/3) ... [2020-08-22 05:10:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@422a9523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:10:38, skipping insertion in model container [2020-08-22 05:10:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:10:38" (3/3) ... [2020-08-22 05:10:38,353 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 [2020-08-22 05:10:38,364 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:10:38,373 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:10:38,387 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:10:38,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:10:38,417 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:10:38,417 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:10:38,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:10:38,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:10:38,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:10:38,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:10:38,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:10:38,450 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-22 05:10:38,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 05:10:38,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:38,463 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] [2020-08-22 05:10:38,463 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:38,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:38,470 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-22 05:10:38,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:38,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720720052] [2020-08-22 05:10:38,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:38,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,412 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:10:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:10:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:10:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:10:39,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 05:10:39,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-22 05:10:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:39,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:39,683 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 05:10:39,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720720052] [2020-08-22 05:10:39,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 05:10:39,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 05:10:39,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932041618] [2020-08-22 05:10:39,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 05:10:39,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 05:10:39,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 05:10:39,712 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-22 05:10:40,012 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:10:40,714 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:10:41,035 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-22 05:10:47,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:10:47,406 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-22 05:10:47,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:10:47,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-22 05:10:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:10:47,428 INFO L225 Difference]: With dead ends: 945 [2020-08-22 05:10:47,429 INFO L226 Difference]: Without dead ends: 492 [2020-08-22 05:10:47,440 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:10:47,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-22 05:10:47,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-22 05:10:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-22 05:10:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-22 05:10:47,586 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-22 05:10:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:10:47,587 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-22 05:10:47,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 05:10:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-22 05:10:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 05:10:47,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:47,592 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] [2020-08-22 05:10:47,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:10:47,592 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:47,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:47,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-22 05:10:47,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:47,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896889813] [2020-08-22 05:10:47,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,934 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:10:47,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:47,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:47,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:10:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:10:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:48,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:10:48,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:48,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:10:48,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:48,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-22 05:10:48,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:48,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:48,068 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:10:48,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896889813] [2020-08-22 05:10:48,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:48,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:10:48,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287621318] [2020-08-22 05:10:48,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:10:48,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:48,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:10:48,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:10:48,072 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-22 05:10:48,379 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:10:49,030 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:10:50,201 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:10:55,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:10:55,872 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-22 05:10:55,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-22 05:10:55,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-22 05:10:55,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:10:55,883 INFO L225 Difference]: With dead ends: 1313 [2020-08-22 05:10:55,883 INFO L226 Difference]: Without dead ends: 893 [2020-08-22 05:10:55,886 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 [2020-08-22 05:10:55,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-22 05:10:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-22 05:10:55,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-22 05:10:56,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-22 05:10:56,004 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-22 05:10:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:10:56,005 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-22 05:10:56,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:10:56,005 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-22 05:10:56,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 05:10:56,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:10:56,008 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] [2020-08-22 05:10:56,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 05:10:56,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:10:56,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:10:56,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-22 05:10:56,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:10:56,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028602189] [2020-08-22 05:10:56,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:10:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,438 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:10:56,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:10:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:10:56,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:10:56,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:10:56,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:10:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:10:56,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:10:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:10:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:10:56,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:10:56,732 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028602189] [2020-08-22 05:10:56,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:10:56,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:10:56,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73518558] [2020-08-22 05:10:56,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:10:56,733 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:10:56,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:10:56,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:10:56,734 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-22 05:10:56,973 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:10:57,312 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:10:57,593 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:11:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:04,758 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-22 05:11:04,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:04,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-22 05:11:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:04,770 INFO L225 Difference]: With dead ends: 895 [2020-08-22 05:11:04,770 INFO L226 Difference]: Without dead ends: 892 [2020-08-22 05:11:04,772 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 [2020-08-22 05:11:04,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-22 05:11:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-22 05:11:04,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-22 05:11:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-22 05:11:04,913 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-22 05:11:04,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:04,917 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-22 05:11:04,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:04,917 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-22 05:11:04,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 05:11:04,926 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:04,926 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] [2020-08-22 05:11:04,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 05:11:04,927 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:04,927 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-22 05:11:04,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:04,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1270751029] [2020-08-22 05:11:04,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,515 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:11:05,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:05,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:11:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:11:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:11:05,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1270751029] [2020-08-22 05:11:05,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:05,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:05,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632471313] [2020-08-22 05:11:05,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:05,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:05,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:05,681 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-22 05:11:05,912 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:11:06,297 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-22 05:11:06,571 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-22 05:11:13,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:13,053 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-22 05:11:13,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:13,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-22 05:11:13,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:13,061 INFO L225 Difference]: With dead ends: 894 [2020-08-22 05:11:13,061 INFO L226 Difference]: Without dead ends: 891 [2020-08-22 05:11:13,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-22 05:11:13,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-22 05:11:13,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-22 05:11:13,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-22 05:11:13,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-22 05:11:13,147 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-22 05:11:13,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:13,148 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-22 05:11:13,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:13,148 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-22 05:11:13,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-22 05:11:13,150 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:13,150 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] [2020-08-22 05:11:13,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 05:11:13,150 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:13,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:13,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-22 05:11:13,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:13,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275771462] [2020-08-22 05:11:13,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,462 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:11:13,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:13,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:11:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:11:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:13,678 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:11:13,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275771462] [2020-08-22 05:11:13,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:13,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:13,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838936272] [2020-08-22 05:11:13,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:13,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:13,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:13,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:13,685 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-22 05:11:13,917 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:11:14,256 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:11:14,529 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:11:20,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:20,666 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-22 05:11:20,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:20,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-22 05:11:20,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:20,673 INFO L225 Difference]: With dead ends: 893 [2020-08-22 05:11:20,673 INFO L226 Difference]: Without dead ends: 890 [2020-08-22 05:11:20,674 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 [2020-08-22 05:11:20,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-22 05:11:20,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-22 05:11:20,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-22 05:11:20,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-22 05:11:20,762 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-22 05:11:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:20,763 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-22 05:11:20,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-22 05:11:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 05:11:20,764 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:20,765 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] [2020-08-22 05:11:20,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 05:11:20,765 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:20,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:20,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-22 05:11:20,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:20,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104670718] [2020-08-22 05:11:20,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:20,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,049 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:11:21,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:11:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:11:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:21,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:21,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:21,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:11:21,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104670718] [2020-08-22 05:11:21,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:21,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:21,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576834038] [2020-08-22 05:11:21,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:21,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:21,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:21,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:21,186 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-22 05:11:21,397 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:11:21,728 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:11:22,018 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:11:28,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:28,696 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-22 05:11:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:28,697 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 05:11:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:28,703 INFO L225 Difference]: With dead ends: 892 [2020-08-22 05:11:28,704 INFO L226 Difference]: Without dead ends: 889 [2020-08-22 05:11:28,705 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 [2020-08-22 05:11:28,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-22 05:11:28,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-22 05:11:28,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-22 05:11:28,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-22 05:11:28,821 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-22 05:11:28,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:28,822 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-22 05:11:28,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:28,822 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-22 05:11:28,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 05:11:28,825 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:11:28,825 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] [2020-08-22 05:11:28,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 05:11:28,826 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:11:28,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:11:28,826 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-22 05:11:28,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:11:28,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168281124] [2020-08-22 05:11:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:11:28,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,182 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-22 05:11:29,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:11:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 05:11:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 05:11:29,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 05:11:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-22 05:11:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-22 05:11:29,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-22 05:11:29,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 05:11:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:11:29,301 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-22 05:11:29,301 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168281124] [2020-08-22 05:11:29,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:11:29,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 05:11:29,302 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262286082] [2020-08-22 05:11:29,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 05:11:29,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:11:29,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 05:11:29,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 05:11:29,303 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-22 05:11:29,557 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-22 05:11:29,882 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-22 05:11:30,153 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-22 05:11:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:11:36,394 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-22 05:11:36,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 05:11:36,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-22 05:11:36,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:11:36,396 INFO L225 Difference]: With dead ends: 889 [2020-08-22 05:11:36,396 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:11:36,399 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 [2020-08-22 05:11:36,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:11:36,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:11:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:11:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:11:36,401 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-22 05:11:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:11:36,401 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:11:36,401 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 05:11:36,401 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:11:36,402 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:11:36,402 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 05:11:36,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 05:11:36,998 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166