/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=1.0 -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 03:17:01,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:17:01,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:17:01,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:17:01,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:17:01,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:17:01,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:17:01,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:17:01,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:17:01,627 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:17:01,628 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:17:01,629 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:17:01,629 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:17:01,630 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:17:01,631 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:17:01,633 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:17:01,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:17:01,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:17:01,636 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:17:01,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:17:01,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:17:01,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:17:01,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:17:01,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:17:01,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:17:01,646 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:17:01,646 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:17:01,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:17:01,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:17:01,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:17:01,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:17:01,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:17:01,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:17:01,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:17:01,652 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:17:01,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:17:01,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:17:01,653 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:17:01,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:17:01,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:17:01,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:17:01,656 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 03:17:01,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:17:01,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:17:01,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:17:01,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:17:01,680 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:17:01,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:17:01,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:17:01,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:17:01,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:17:01,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:17:01,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:17:01,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:17:01,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:17:01,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:17:01,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:17:01,682 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:17:01,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:17:01,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:17:01,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:17:01,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:17:01,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:17:01,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-19 03:17:01,685 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=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0; [2020-08-19 03:17:01,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:17:01,983 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:17:01,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:17:01,988 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:17:01,989 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:17:01,989 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 03:17:02,053 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68040281/21e36b2d8b61432f802dc7dda7b63da0/FLAGedb3a0002 [2020-08-19 03:17:02,886 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:17:02,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-19 03:17:02,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68040281/21e36b2d8b61432f802dc7dda7b63da0/FLAGedb3a0002 [2020-08-19 03:17:03,415 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e68040281/21e36b2d8b61432f802dc7dda7b63da0 [2020-08-19 03:17:03,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:17:03,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:17:03,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:17:03,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:17:03,431 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:17:03,432 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:17:03" (1/1) ... [2020-08-19 03:17:03,435 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fdbf8ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:03, skipping insertion in model container [2020-08-19 03:17:03,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:17:03" (1/1) ... [2020-08-19 03:17:03,443 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:17:03,557 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:17:04,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:17:04,998 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:17:05,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:17:05,516 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:17:05,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05 WrapperNode [2020-08-19 03:17:05,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:17:05,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:17:05,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:17:05,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:17:05,541 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,620 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,726 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (1/1) ... [2020-08-19 03:17:05,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:17:05,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:17:05,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:17:05,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:17:05,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (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 03:17:05,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:17:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:17:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 03:17:05,845 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-19 03:17:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-19 03:17:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-19 03:17:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-19 03:17:05,846 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-19 03:17:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:17:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-19 03:17:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-19 03:17:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-19 03:17:05,847 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-19 03:17:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-19 03:17:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-19 03:17:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-19 03:17:05,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-19 03:17:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-19 03:17:05,849 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-19 03:17:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-19 03:17:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-19 03:17:05,850 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-19 03:17:05,851 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-19 03:17:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-19 03:17:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-19 03:17:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-19 03:17:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-19 03:17:05,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-19 03:17:05,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-19 03:17:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-19 03:17:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-19 03:17:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-19 03:17:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-19 03:17:05,854 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-19 03:17:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-19 03:17:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-19 03:17:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-19 03:17:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-19 03:17:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-19 03:17:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-19 03:17:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-19 03:17:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-19 03:17:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-19 03:17:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-19 03:17:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-19 03:17:05,858 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-19 03:17:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-19 03:17:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-19 03:17:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-19 03:17:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-19 03:17:05,859 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-19 03:17:05,860 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-19 03:17:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:17:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-19 03:17:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-19 03:17:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-19 03:17:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-19 03:17:05,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-19 03:17:05,923 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-19 03:17:05,924 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-19 03:17:05,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-19 03:17:05,926 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-19 03:17:05,927 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-19 03:17:05,928 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-19 03:17:05,929 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-19 03:17:05,930 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-19 03:17:05,931 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-19 03:17:05,932 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-19 03:17:05,933 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-19 03:17:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-19 03:17:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:17:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-19 03:17:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-19 03:17:05,934 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:17:06,959 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-19 03:17:07,494 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-19 03:17:07,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:17:07,979 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 03:17:07,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:17:07 BoogieIcfgContainer [2020-08-19 03:17:07,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:17:07,988 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:17:07,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:17:07,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:17:07,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:17:03" (1/3) ... [2020-08-19 03:17:07,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:17:07, skipping insertion in model container [2020-08-19 03:17:07,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:17:05" (2/3) ... [2020-08-19 03:17:07,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3898a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:17:07, skipping insertion in model container [2020-08-19 03:17:07,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:17:07" (3/3) ... [2020-08-19 03:17:07,995 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 03:17:08,006 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:17:08,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:17:08,029 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:17:08,056 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:17:08,057 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:17:08,057 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:17:08,057 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:17:08,057 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:17:08,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:17:08,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:17:08,058 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:17:08,086 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-19 03:17:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-19 03:17:08,097 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:08,098 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 03:17:08,099 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:08,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:08,105 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-19 03:17:08,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:08,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009788161] [2020-08-19 03:17:08,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,001 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:09,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:09,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 03:17:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-19 03:17:09,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:09,186 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 03:17:09,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009788161] [2020-08-19 03:17:09,189 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:17:09,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 03:17:09,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771908257] [2020-08-19 03:17:09,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:17:09,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:09,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:17:09,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:17:09,213 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-19 03:17:09,482 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:10,231 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 03:17:10,542 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-19 03:17:16,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:16,685 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-19 03:17:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:17:16,688 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-19 03:17:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:16,707 INFO L225 Difference]: With dead ends: 945 [2020-08-19 03:17:16,707 INFO L226 Difference]: Without dead ends: 492 [2020-08-19 03:17:16,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:17:16,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-19 03:17:16,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-19 03:17:16,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-19 03:17:16,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-19 03:17:16,885 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-19 03:17:16,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:16,886 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-19 03:17:16,886 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:17:16,887 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-19 03:17:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-19 03:17:16,899 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:16,899 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 03:17:16,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:17:16,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-19 03:17:16,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:16,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241062393] [2020-08-19 03:17:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,313 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:17,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:17,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-19 03:17:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:17,490 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 03:17:17,491 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241062393] [2020-08-19 03:17:17,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:17,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:17,493 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390872516] [2020-08-19 03:17:17,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:17,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:17,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:17,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:17,496 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-19 03:17:17,770 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:18,431 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 03:17:19,573 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:17:25,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:25,383 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-19 03:17:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 03:17:25,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-19 03:17:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:25,394 INFO L225 Difference]: With dead ends: 1313 [2020-08-19 03:17:25,395 INFO L226 Difference]: Without dead ends: 893 [2020-08-19 03:17:25,398 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 03:17:25,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-19 03:17:25,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-19 03:17:25,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-19 03:17:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-19 03:17:25,532 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-19 03:17:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:25,532 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-19 03:17:25,532 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:17:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-19 03:17:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 03:17:25,535 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:25,535 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 03:17:25,535 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:17:25,535 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-19 03:17:25,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:25,536 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719128695] [2020-08-19 03:17:25,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:25,945 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:25,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:26,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:26,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:17:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:26,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:26,150 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 03:17:26,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719128695] [2020-08-19 03:17:26,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:26,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:26,152 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087261726] [2020-08-19 03:17:26,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:26,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:26,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:26,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:26,154 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-19 03:17:26,483 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:26,813 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 03:17:27,111 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:17:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:31,403 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-19 03:17:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:17:31,403 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-19 03:17:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:31,415 INFO L225 Difference]: With dead ends: 895 [2020-08-19 03:17:31,415 INFO L226 Difference]: Without dead ends: 892 [2020-08-19 03:17:31,419 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 03:17:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-19 03:17:31,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-19 03:17:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-19 03:17:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-19 03:17:31,550 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-19 03:17:31,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:31,552 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-19 03:17:31,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:17:31,553 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-19 03:17:31,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-19 03:17:31,555 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:31,556 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 03:17:31,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:17:31,556 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:31,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:31,556 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-19 03:17:31,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:31,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729705586] [2020-08-19 03:17:31,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:31,993 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:31,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:32,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:17:32,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:32,141 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 03:17:32,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729705586] [2020-08-19 03:17:32,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:32,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:32,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037925479] [2020-08-19 03:17:32,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:32,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:32,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:32,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:32,144 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-19 03:17:32,390 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:32,738 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-19 03:17:33,011 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-19 03:17:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:40,141 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-19 03:17:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:17:40,142 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-19 03:17:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:40,149 INFO L225 Difference]: With dead ends: 894 [2020-08-19 03:17:40,149 INFO L226 Difference]: Without dead ends: 891 [2020-08-19 03:17:40,150 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 03:17:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-19 03:17:40,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-19 03:17:40,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-19 03:17:40,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-19 03:17:40,236 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-19 03:17:40,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:40,236 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-19 03:17:40,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:17:40,236 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-19 03:17:40,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-19 03:17:40,238 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:40,238 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 03:17:40,238 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:17:40,239 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:40,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:40,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-19 03:17:40,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:40,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581496239] [2020-08-19 03:17:40,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,595 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:40,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:40,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:40,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:40,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:17:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:40,749 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 03:17:40,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581496239] [2020-08-19 03:17:40,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:40,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:40,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734845587] [2020-08-19 03:17:40,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:40,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:40,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:40,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:40,755 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-19 03:17:41,013 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:41,321 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 03:17:41,562 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:17:48,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:48,667 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-19 03:17:48,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:17:48,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-19 03:17:48,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:48,676 INFO L225 Difference]: With dead ends: 893 [2020-08-19 03:17:48,677 INFO L226 Difference]: Without dead ends: 890 [2020-08-19 03:17:48,678 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 [2020-08-19 03:17:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-19 03:17:48,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-19 03:17:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-19 03:17:48,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-19 03:17:48,773 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-19 03:17:48,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:48,774 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-19 03:17:48,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:17:48,774 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-19 03:17:48,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 03:17:48,776 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:48,777 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 03:17:48,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:17:48,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:48,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:48,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-19 03:17:48,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:48,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34452655] [2020-08-19 03:17:48,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,151 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:49,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:49,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:17:49,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:49,340 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 03:17:49,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34452655] [2020-08-19 03:17:49,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:49,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:49,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517236789] [2020-08-19 03:17:49,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:49,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:49,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:49,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:49,342 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-19 03:17:49,572 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:49,887 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 03:17:50,183 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:17:55,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:17:55,715 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-19 03:17:55,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:17:55,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-19 03:17:55,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:17:55,723 INFO L225 Difference]: With dead ends: 892 [2020-08-19 03:17:55,723 INFO L226 Difference]: Without dead ends: 889 [2020-08-19 03:17:55,724 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 03:17:55,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-19 03:17:55,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-19 03:17:55,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-19 03:17:55,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-19 03:17:55,810 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-19 03:17:55,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:17:55,810 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-19 03:17:55,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:17:55,810 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-19 03:17:55,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-19 03:17:55,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:17:55,812 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 03:17:55,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:17:55,812 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:17:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:17:55,813 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-19 03:17:55,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:17:55,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1717926339] [2020-08-19 03:17:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:17:55,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,125 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-19 03:17:56,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:17:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:17:56,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-19 03:17:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-19 03:17:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:17:56,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-19 03:17:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-19 03:17:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-19 03:17:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:17:56,263 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 03:17:56,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1717926339] [2020-08-19 03:17:56,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:17:56,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 03:17:56,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153767571] [2020-08-19 03:17:56,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:17:56,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:17:56,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:17:56,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:17:56,266 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-19 03:17:56,513 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-19 03:17:56,825 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-19 03:17:57,136 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-19 03:18:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:18:02,117 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-19 03:18:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:18:02,119 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-19 03:18:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:18:02,119 INFO L225 Difference]: With dead ends: 889 [2020-08-19 03:18:02,120 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:18:02,123 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 03:18:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:18:02,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:18:02,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:18:02,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:18:02,125 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-19 03:18:02,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:18:02,125 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:18:02,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:18:02,125 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:18:02,125 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:18:02,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:18:02,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.