/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -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 [2020-08-19 02:28:33,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 02:28:33,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 02:28:33,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 02:28:33,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:28:33,658 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:28:33,660 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:28:33,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:28:33,666 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:28:33,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:28:33,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:28:33,671 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:28:33,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:28:33,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:28:33,677 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:28:33,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:28:33,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:28:33,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:28:33,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:28:33,683 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:28:33,684 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:28:33,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:28:33,686 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:28:33,687 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:28:33,689 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 02:28:33,689 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 02:28:33,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 02:28:33,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 02:28:33,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 02:28:33,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 02:28:33,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 02:28:33,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 02:28:33,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 02:28:33,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 02:28:33,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 02:28:33,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 02:28:33,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 02:28:33,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 02:28:33,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:28:33,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:28:33,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:28:33,698 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 [2020-08-19 02:28:33,720 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:28:33,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:28:33,721 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:28:33,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:28:33,722 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:28:33,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:28:33,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:28:33,723 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:28:33,724 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:28:33,724 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:28:33,724 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:28:33,724 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:28:33,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:28:33,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:28:33,725 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:28:33,725 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:28:33,725 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:28:33,726 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:28:33,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:28:33,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:28:33,726 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:28:33,726 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 02:28:33,726 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:28:34,013 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:28:34,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:28:34,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:28:34,030 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:28:34,031 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:28:34,032 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 02:28:34,110 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e99c26c45/57b62f42977d45698d50ed7b588b1f7d/FLAGf9215ff13 [2020-08-19 02:28:34,931 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:28:34,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 02:28:34,974 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e99c26c45/57b62f42977d45698d50ed7b588b1f7d/FLAGf9215ff13 [2020-08-19 02:28:35,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e99c26c45/57b62f42977d45698d50ed7b588b1f7d [2020-08-19 02:28:35,477 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:28:35,479 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:28:35,480 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:28:35,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:28:35,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:28:35,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:28:35" (1/1) ... [2020-08-19 02:28:35,490 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de13521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:35, skipping insertion in model container [2020-08-19 02:28:35,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:28:35" (1/1) ... [2020-08-19 02:28:35,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:28:35,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:28:36,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:28:36,963 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:28:37,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:28:37,414 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:28:37,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37 WrapperNode [2020-08-19 02:28:37,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:28:37,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:28:37,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:28:37,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:28:37,437 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,437 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (1/1) ... [2020-08-19 02:28:37,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:28:37,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:28:37,641 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:28:37,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:28:37,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (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 [2020-08-19 02:28:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:28:37,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:28:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 02:28:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-19 02:28:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 02:28:37,726 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-19 02:28:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-19 02:28:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 02:28:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 02:28:37,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 02:28:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 02:28:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 02:28:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 02:28:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 02:28:37,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 02:28:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 02:28:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 02:28:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-19 02:28:37,729 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-19 02:28:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-19 02:28:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-19 02:28:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-19 02:28:37,730 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-19 02:28:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-19 02:28:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-19 02:28:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-19 02:28:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-19 02:28:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-19 02:28:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-19 02:28:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-19 02:28:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-19 02:28:37,732 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-19 02:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 02:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-19 02:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-19 02:28:37,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-19 02:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-19 02:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-19 02:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-19 02:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-19 02:28:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-19 02:28:37,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-19 02:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-19 02:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 02:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 02:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-19 02:28:37,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-19 02:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-19 02:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 02:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-19 02:28:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 02:28:37,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 02:28:37,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-19 02:28:37,839 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 02:28:37,840 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 02:28:37,841 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 02:28:37,842 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 02:28:37,843 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 02:28:37,844 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 02:28:37,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-19 02:28:37,846 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-19 02:28:37,847 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-19 02:28:37,848 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-19 02:28:37,849 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-19 02:28:37,850 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-19 02:28:37,851 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-19 02:28:37,852 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-19 02:28:37,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 02:28:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 02:28:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:28:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 02:28:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 02:28:37,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:28:38,724 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 02:28:39,468 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-19 02:28:39,961 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:28:39,962 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 02:28:39,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:28:39 BoogieIcfgContainer [2020-08-19 02:28:39,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:28:39,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:28:39,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:28:39,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:28:39,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:28:35" (1/3) ... [2020-08-19 02:28:39,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a994052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:28:39, skipping insertion in model container [2020-08-19 02:28:39,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:28:37" (2/3) ... [2020-08-19 02:28:39,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a994052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:28:39, skipping insertion in model container [2020-08-19 02:28:39,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:28:39" (3/3) ... [2020-08-19 02:28:39,979 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 [2020-08-19 02:28:39,990 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:28:40,000 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:28:40,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:28:40,044 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:28:40,044 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:28:40,044 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:28:40,045 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:28:40,045 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:28:40,045 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:28:40,045 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:28:40,045 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:28:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-19 02:28:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 02:28:40,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:28:40,090 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] [2020-08-19 02:28:40,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:28:40,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:28:40,098 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-19 02:28:40,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:28:40,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1528859259] [2020-08-19 02:28:40,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:28:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:40,916 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:28:40,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:40,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:28:41,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:28:41,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:28:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:28:41,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 02:28:41,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 02:28:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:41,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:41,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-19 02:28:41,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1528859259] [2020-08-19 02:28:41,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:28:41,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:28:41,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713268229] [2020-08-19 02:28:41,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:28:41,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:28:41,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:28:41,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:28:41,189 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-19 02:28:41,471 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:28:42,158 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 02:28:42,432 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-19 02:28:49,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:28:49,025 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-19 02:28:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:28:49,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-19 02:28:49,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:28:49,048 INFO L225 Difference]: With dead ends: 945 [2020-08-19 02:28:49,049 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 02:28:49,059 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 [2020-08-19 02:28:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 02:28:49,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-19 02:28:49,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 02:28:49,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-19 02:28:49,207 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-19 02:28:49,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:28:49,208 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-19 02:28:49,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:28:49,208 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-19 02:28:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 02:28:49,212 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:28:49,213 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] [2020-08-19 02:28:49,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:28:49,213 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:28:49,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:28:49,214 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-19 02:28:49,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:28:49,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047120072] [2020-08-19 02:28:49,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:28:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,578 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:28:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:28:49,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:28:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:28:49,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:28:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:28:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 02:28:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:49,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:49,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:28:49,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047120072] [2020-08-19 02:28:49,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:28:49,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:28:49,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544596329] [2020-08-19 02:28:49,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:28:49,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:28:49,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:28:49,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:28:49,788 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-19 02:28:50,023 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:28:50,765 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 02:28:51,950 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:28:59,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:28:59,188 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-19 02:28:59,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:28:59,189 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-19 02:28:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:28:59,200 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 02:28:59,200 INFO L226 Difference]: Without dead ends: 893 [2020-08-19 02:28:59,203 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 [2020-08-19 02:28:59,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-19 02:28:59,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-19 02:28:59,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-19 02:28:59,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-19 02:28:59,317 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-19 02:28:59,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:28:59,317 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-19 02:28:59,317 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:28:59,318 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-19 02:28:59,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 02:28:59,321 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:28:59,321 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] [2020-08-19 02:28:59,321 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:28:59,321 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:28:59,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:28:59,322 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-19 02:28:59,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:28:59,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974397097] [2020-08-19 02:28:59,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:28:59,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,738 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:28:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:28:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:28:59,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:28:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:28:59,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:28:59,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:28:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:28:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:28:59,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:28:59,993 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:28:59,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974397097] [2020-08-19 02:28:59,995 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:28:59,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:28:59,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635395806] [2020-08-19 02:28:59,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:28:59,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:28:59,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:28:59,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:28:59,997 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-19 02:29:00,271 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:29:00,607 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 02:29:00,950 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:29:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:07,221 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-19 02:29:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:29:07,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-19 02:29:07,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:07,233 INFO L225 Difference]: With dead ends: 895 [2020-08-19 02:29:07,233 INFO L226 Difference]: Without dead ends: 892 [2020-08-19 02:29:07,234 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 [2020-08-19 02:29:07,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-19 02:29:07,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-19 02:29:07,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-19 02:29:07,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-19 02:29:07,348 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-19 02:29:07,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:07,349 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-19 02:29:07,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:29:07,349 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-19 02:29:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 02:29:07,352 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:07,352 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] [2020-08-19 02:29:07,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:29:07,353 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:07,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:07,353 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-19 02:29:07,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:07,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717004021] [2020-08-19 02:29:07,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:07,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,787 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:29:07,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:29:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:07,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:29:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:08,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:29:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:08,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:08,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:29:08,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717004021] [2020-08-19 02:29:08,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:29:08,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:29:08,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115621309] [2020-08-19 02:29:08,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:29:08,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:08,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:29:08,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:29:08,077 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-19 02:29:08,345 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:29:08,722 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 02:29:09,023 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 02:29:17,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:17,028 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-19 02:29:17,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:29:17,029 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 02:29:17,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:17,035 INFO L225 Difference]: With dead ends: 894 [2020-08-19 02:29:17,035 INFO L226 Difference]: Without dead ends: 891 [2020-08-19 02:29:17,036 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 [2020-08-19 02:29:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-19 02:29:17,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-19 02:29:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 02:29:17,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-19 02:29:17,130 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-19 02:29:17,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:17,131 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-19 02:29:17,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:29:17,131 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-19 02:29:17,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 02:29:17,133 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:17,133 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] [2020-08-19 02:29:17,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:29:17,133 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:17,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:17,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-19 02:29:17,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:17,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440250901] [2020-08-19 02:29:17,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,456 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:29:17,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:17,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:29:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:29:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:29:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:17,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:17,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:29:17,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440250901] [2020-08-19 02:29:17,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:29:17,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:29:17,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223364069] [2020-08-19 02:29:17,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:29:17,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:17,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:29:17,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:29:17,602 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-19 02:29:17,856 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:29:18,214 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 02:29:18,504 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:29:23,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:23,872 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-19 02:29:23,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:29:23,873 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 02:29:23,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:23,880 INFO L225 Difference]: With dead ends: 893 [2020-08-19 02:29:23,880 INFO L226 Difference]: Without dead ends: 890 [2020-08-19 02:29:23,881 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 [2020-08-19 02:29:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-19 02:29:23,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-19 02:29:23,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 02:29:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-19 02:29:23,962 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-19 02:29:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:23,963 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-19 02:29:23,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:29:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-19 02:29:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 02:29:23,965 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:23,965 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] [2020-08-19 02:29:23,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:29:23,965 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:23,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:23,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-19 02:29:23,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:23,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171465355] [2020-08-19 02:29:23,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,251 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:29:24,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:29:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:29:24,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:29:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:24,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:29:24,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171465355] [2020-08-19 02:29:24,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:29:24,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:29:24,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162993572] [2020-08-19 02:29:24,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:29:24,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:24,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:29:24,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:29:24,422 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-19 02:29:24,648 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:29:25,022 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 02:29:25,340 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 02:29:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:29:29,968 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-19 02:29:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:29:29,969 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 02:29:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:29:29,976 INFO L225 Difference]: With dead ends: 892 [2020-08-19 02:29:29,976 INFO L226 Difference]: Without dead ends: 889 [2020-08-19 02:29:29,977 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 [2020-08-19 02:29:29,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-19 02:29:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-19 02:29:30,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-19 02:29:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-19 02:29:30,065 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-19 02:29:30,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:29:30,066 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-19 02:29:30,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:29:30,066 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-19 02:29:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 02:29:30,068 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:29:30,068 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] [2020-08-19 02:29:30,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:29:30,068 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:29:30,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:29:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-19 02:29:30,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:29:30,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824433944] [2020-08-19 02:29:30,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:29:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,373 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 02:29:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:29:30,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 02:29:30,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 02:29:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 02:29:30,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 02:29:30,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 02:29:30,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 02:29:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 02:29:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:29:30,515 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-19 02:29:30,516 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824433944] [2020-08-19 02:29:30,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:29:30,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 02:29:30,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896961799] [2020-08-19 02:29:30,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:29:30,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:29:30,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:29:30,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:29:30,518 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-19 02:29:30,763 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 02:29:31,086 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 02:29:31,368 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189