/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 21:04:36,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 21:04:36,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 21:04:36,871 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 21:04:36,871 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 21:04:36,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 21:04:36,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 21:04:36,885 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 21:04:36,887 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 21:04:36,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 21:04:36,891 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 21:04:36,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 21:04:36,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 21:04:36,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 21:04:36,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 21:04:36,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 21:04:36,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 21:04:36,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 21:04:36,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 21:04:36,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 21:04:36,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 21:04:36,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 21:04:36,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 21:04:36,913 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 21:04:36,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 21:04:36,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 21:04:36,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 21:04:36,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 21:04:36,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 21:04:36,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 21:04:36,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 21:04:36,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 21:04:36,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 21:04:36,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 21:04:36,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 21:04:36,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 21:04:36,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 21:04:36,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 21:04:36,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 21:04:36,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 21:04:36,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 21:04:36,945 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 [2020-08-21 21:04:36,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 21:04:36,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 21:04:36,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 21:04:36,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 21:04:36,981 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 21:04:36,981 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 21:04:36,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 21:04:36,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 21:04:36,982 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 21:04:36,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 21:04:36,982 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 21:04:36,983 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 21:04:36,983 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 21:04:36,983 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 21:04:36,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 21:04:36,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 21:04:36,984 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 21:04:36,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 21:04:36,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 21:04:36,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 21:04:36,984 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 21:04:36,985 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-21 21:04:36,986 INFO L138 SettingsManager]: * To the following directory=dump/ Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-08-21 21:04:37,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 21:04:37,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 21:04:37,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 21:04:37,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 21:04:37,308 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 21:04:37,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-21 21:04:37,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0745366f8/f1e907b7ce9f454e978e4e5fe7684c26/FLAG426c87a81 [2020-08-21 21:04:38,181 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 21:04:38,182 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-21 21:04:38,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0745366f8/f1e907b7ce9f454e978e4e5fe7684c26/FLAG426c87a81 [2020-08-21 21:04:38,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0745366f8/f1e907b7ce9f454e978e4e5fe7684c26 [2020-08-21 21:04:38,267 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 21:04:38,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 21:04:38,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 21:04:38,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 21:04:38,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 21:04:38,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:04:38" (1/1) ... [2020-08-21 21:04:38,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603d5fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:38, skipping insertion in model container [2020-08-21 21:04:38,278 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 09:04:38" (1/1) ... [2020-08-21 21:04:38,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 21:04:38,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 21:04:39,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:04:39,658 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 21:04:40,023 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 21:04:40,115 INFO L208 MainTranslator]: Completed translation [2020-08-21 21:04:40,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40 WrapperNode [2020-08-21 21:04:40,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 21:04:40,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 21:04:40,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 21:04:40,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 21:04:40,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (1/1) ... [2020-08-21 21:04:40,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 21:04:40,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 21:04:40,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 21:04:40,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 21:04:40,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (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 [2020-08-21 21:04:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 21:04:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 21:04:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 21:04:40,398 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-21 21:04:40,398 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-21 21:04:40,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-21 21:04:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-21 21:04:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-21 21:04:40,401 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 21:04:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-21 21:04:40,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-21 21:04:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-21 21:04:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-21 21:04:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-21 21:04:40,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-21 21:04:40,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-21 21:04:40,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-21 21:04:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-21 21:04:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-21 21:04:40,409 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-21 21:04:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-21 21:04:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-21 21:04:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-21 21:04:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-21 21:04:40,410 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-21 21:04:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-21 21:04:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-21 21:04:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-21 21:04:40,411 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-21 21:04:40,412 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-21 21:04:40,412 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-21 21:04:40,412 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-21 21:04:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-21 21:04:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-21 21:04:40,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 21:04:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-21 21:04:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-21 21:04:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-21 21:04:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-21 21:04:40,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-21 21:04:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-21 21:04:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-21 21:04:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-21 21:04:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-21 21:04:40,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-21 21:04:40,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-21 21:04:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-21 21:04:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-21 21:04:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-21 21:04:40,417 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-21 21:04:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-21 21:04:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-21 21:04:40,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-21 21:04:40,419 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-21 21:04:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-21 21:04:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-21 21:04:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-21 21:04:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-21 21:04:40,420 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-21 21:04:40,485 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-21 21:04:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-21 21:04:40,486 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-21 21:04:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 21:04:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-21 21:04:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-21 21:04:40,486 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-21 21:04:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-21 21:04:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-21 21:04:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-21 21:04:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-21 21:04:40,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-21 21:04:40,488 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-21 21:04:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-21 21:04:40,489 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-21 21:04:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-21 21:04:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-21 21:04:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-21 21:04:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-21 21:04:40,490 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-21 21:04:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-21 21:04:40,491 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-21 21:04:40,492 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-21 21:04:40,493 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-21 21:04:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-21 21:04:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-21 21:04:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-21 21:04:40,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-21 21:04:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-21 21:04:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-21 21:04:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-21 21:04:40,498 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-21 21:04:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-21 21:04:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-21 21:04:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-21 21:04:40,499 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-21 21:04:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-21 21:04:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-21 21:04:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-21 21:04:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-21 21:04:40,500 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-21 21:04:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-21 21:04:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-21 21:04:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-21 21:04:40,501 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-21 21:04:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-21 21:04:40,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 21:04:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 21:04:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 21:04:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-21 21:04:40,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 21:04:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-21 21:04:40,504 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-21 21:04:40,505 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-21 21:04:40,506 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-21 21:04:40,507 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-21 21:04:40,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-21 21:04:40,509 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-21 21:04:40,510 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 21:04:40,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-21 21:04:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-21 21:04:40,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 21:04:41,216 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-21 21:04:41,737 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-21 21:04:42,319 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 21:04:42,320 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-21 21:04:42,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:04:42 BoogieIcfgContainer [2020-08-21 21:04:42,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 21:04:42,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 21:04:42,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 21:04:42,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 21:04:42,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 09:04:38" (1/3) ... [2020-08-21 21:04:42,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b6463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:04:42, skipping insertion in model container [2020-08-21 21:04:42,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 09:04:40" (2/3) ... [2020-08-21 21:04:42,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516b6463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 09:04:42, skipping insertion in model container [2020-08-21 21:04:42,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 09:04:42" (3/3) ... [2020-08-21 21:04:42,335 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 [2020-08-21 21:04:42,344 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 21:04:42,353 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 21:04:42,366 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 21:04:42,391 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 21:04:42,392 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 21:04:42,392 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 21:04:42,392 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 21:04:42,392 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 21:04:42,392 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 21:04:42,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 21:04:42,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 21:04:42,419 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-21 21:04:42,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-21 21:04:42,430 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:04:42,431 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] [2020-08-21 21:04:42,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:04:42,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:04:42,438 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-21 21:04:42,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:04:42,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40108924] [2020-08-21 21:04:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:04:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,250 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:04:43,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:04:43,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:04:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:04:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:04:43,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:04:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-21 21:04:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-21 21:04:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:04:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:43,514 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-21 21:04:43,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40108924] [2020-08-21 21:04:43,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-21 21:04:43,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-21 21:04:43,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479754711] [2020-08-21 21:04:43,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-21 21:04:43,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:04:43,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-21 21:04:43,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-21 21:04:43,542 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-21 21:04:43,806 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:04:44,469 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 21:04:44,718 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-21 21:04:50,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:04:50,446 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-21 21:04:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:04:50,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-21 21:04:50,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:04:50,485 INFO L225 Difference]: With dead ends: 945 [2020-08-21 21:04:50,486 INFO L226 Difference]: Without dead ends: 492 [2020-08-21 21:04:50,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-21 21:04:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-21 21:04:50,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-21 21:04:50,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-21 21:04:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-21 21:04:50,673 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-21 21:04:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:04:50,673 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-21 21:04:50,673 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-21 21:04:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-21 21:04:50,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-21 21:04:50,678 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:04:50,678 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] [2020-08-21 21:04:50,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 21:04:50,679 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:04:50,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:04:50,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-21 21:04:50,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:04:50,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044103817] [2020-08-21 21:04:50,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:04:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,011 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:04:51,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:04:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:04:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:04:51,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:04:51,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:04:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:04:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-21 21:04:51,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:04:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:04:51,144 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:04:51,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044103817] [2020-08-21 21:04:51,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:04:51,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:04:51,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705992273] [2020-08-21 21:04:51,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:04:51,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:04:51,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:04:51,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:04:51,148 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-21 21:04:51,508 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:04:52,196 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 21:04:53,335 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:05:00,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:00,053 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-21 21:05:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-21 21:05:00,054 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-21 21:05:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:00,063 INFO L225 Difference]: With dead ends: 1313 [2020-08-21 21:05:00,064 INFO L226 Difference]: Without dead ends: 893 [2020-08-21 21:05:00,066 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 [2020-08-21 21:05:00,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-21 21:05:00,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-21 21:05:00,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-21 21:05:00,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-21 21:05:00,191 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-21 21:05:00,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:00,192 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-21 21:05:00,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:00,192 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-21 21:05:00,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-21 21:05:00,196 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:05:00,196 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] [2020-08-21 21:05:00,196 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 21:05:00,197 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:05:00,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:05:00,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-21 21:05:00,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:05:00,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426805679] [2020-08-21 21:05:00,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:05:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,599 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:05:00,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:05:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:05:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:05:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:05:00,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:05:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:05:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:05:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:05:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:05:00,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1426805679] [2020-08-21 21:05:00,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:05:00,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:05:00,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656173401] [2020-08-21 21:05:00,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:05:00,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:05:00,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:05:00,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:05:00,797 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-21 21:05:01,001 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:05:01,457 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 21:05:01,750 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:05:06,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:06,783 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-21 21:05:06,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:05:06,784 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-21 21:05:06,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:06,792 INFO L225 Difference]: With dead ends: 895 [2020-08-21 21:05:06,792 INFO L226 Difference]: Without dead ends: 892 [2020-08-21 21:05:06,793 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 [2020-08-21 21:05:06,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-21 21:05:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-21 21:05:06,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-21 21:05:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-21 21:05:06,888 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-21 21:05:06,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:06,889 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-21 21:05:06,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-21 21:05:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-21 21:05:06,892 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:05:06,892 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] [2020-08-21 21:05:06,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 21:05:06,892 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:05:06,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:05:06,893 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-21 21:05:06,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:05:06,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1752425389] [2020-08-21 21:05:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:05:06,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,231 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:05:07,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:05:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:05:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:05:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:05:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:05:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:05:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:05:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:05:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:07,415 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:05:07,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1752425389] [2020-08-21 21:05:07,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:05:07,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:05:07,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470968547] [2020-08-21 21:05:07,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:05:07,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:05:07,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:05:07,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:05:07,419 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-21 21:05:07,768 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:05:08,143 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-21 21:05:08,434 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-21 21:05:15,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:15,565 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-21 21:05:15,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:05:15,566 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-21 21:05:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:15,572 INFO L225 Difference]: With dead ends: 894 [2020-08-21 21:05:15,573 INFO L226 Difference]: Without dead ends: 891 [2020-08-21 21:05:15,573 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 [2020-08-21 21:05:15,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-21 21:05:15,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-21 21:05:15,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-21 21:05:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-21 21:05:15,668 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-21 21:05:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-21 21:05:15,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:15,669 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-21 21:05:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-21 21:05:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:05:15,671 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] [2020-08-21 21:05:15,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-21 21:05:15,672 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:05:15,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:05:15,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-21 21:05:15,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:05:15,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480309104] [2020-08-21 21:05:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:05:15,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:15,971 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:05:15,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:05:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:05:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:05:16,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:05:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:05:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:05:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:05:16,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:05:16,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:16,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:05:16,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480309104] [2020-08-21 21:05:16,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:05:16,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:05:16,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106973406] [2020-08-21 21:05:16,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:05:16,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:05:16,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:05:16,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:05:16,126 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-21 21:05:16,372 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:05:16,710 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 21:05:17,088 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:05:22,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:22,313 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-21 21:05:22,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:05:22,320 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-21 21:05:22,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:22,325 INFO L225 Difference]: With dead ends: 893 [2020-08-21 21:05:22,325 INFO L226 Difference]: Without dead ends: 890 [2020-08-21 21:05:22,326 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 [2020-08-21 21:05:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-21 21:05:22,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-21 21:05:22,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-21 21:05:22,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-21 21:05:22,416 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-21 21:05:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:22,416 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-21 21:05:22,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-21 21:05:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-21 21:05:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:05:22,418 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] [2020-08-21 21:05:22,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-21 21:05:22,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:05:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:05:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-21 21:05:22,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:05:22,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [798089323] [2020-08-21 21:05:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:05:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,709 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:05:22,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:05:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:05:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:05:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:05:22,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:05:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:05:22,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:05:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:05:22,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:22,860 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:05:22,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [798089323] [2020-08-21 21:05:22,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:05:22,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:05:22,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267356984] [2020-08-21 21:05:22,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:05:22,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:05:22,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:05:22,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:05:22,864 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-21 21:05:23,076 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:05:23,394 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 21:05:23,684 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:05:29,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:29,908 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-21 21:05:29,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:05:29,910 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-21 21:05:29,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:29,916 INFO L225 Difference]: With dead ends: 892 [2020-08-21 21:05:29,916 INFO L226 Difference]: Without dead ends: 889 [2020-08-21 21:05:29,917 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 [2020-08-21 21:05:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-21 21:05:30,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-21 21:05:30,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-21 21:05:30,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-21 21:05:30,008 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-21 21:05:30,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:30,009 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-21 21:05:30,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:30,009 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-21 21:05:30,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-21 21:05:30,012 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 21:05:30,012 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] [2020-08-21 21:05:30,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-21 21:05:30,012 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 21:05:30,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 21:05:30,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-21 21:05:30,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 21:05:30,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320621745] [2020-08-21 21:05:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 21:05:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,311 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-21 21:05:30,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 21:05:30,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 21:05:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-21 21:05:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-21 21:05:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-21 21:05:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-21 21:05:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-21 21:05:30,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-21 21:05:30,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 21:05:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-21 21:05:30,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320621745] [2020-08-21 21:05:30,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 21:05:30,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-21 21:05:30,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000114586] [2020-08-21 21:05:30,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-21 21:05:30,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 21:05:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-21 21:05:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-21 21:05:30,446 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-21 21:05:30,668 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-21 21:05:31,006 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-21 21:05:31,280 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-21 21:05:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 21:05:35,290 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-21 21:05:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-21 21:05:35,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-21 21:05:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 21:05:35,291 INFO L225 Difference]: With dead ends: 889 [2020-08-21 21:05:35,292 INFO L226 Difference]: Without dead ends: 0 [2020-08-21 21:05:35,295 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 [2020-08-21 21:05:35,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-21 21:05:35,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-21 21:05:35,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-21 21:05:35,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-21 21:05:35,296 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-21 21:05:35,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 21:05:35,297 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-21 21:05:35,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-21 21:05:35,297 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-21 21:05:35,297 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-21 21:05:35,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-21 21:05:35,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-21 21:05:35,791 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166 [2020-08-21 21:05:35,928 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 224 DAG size of output: 30