/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=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:39:12,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:39:12,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:39:12,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:39:12,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:39:12,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:39:12,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:39:12,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:39:12,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:39:12,259 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:39:12,260 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:39:12,262 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:39:12,262 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:39:12,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:39:12,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:39:12,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:39:12,269 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:39:12,270 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:39:12,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:39:12,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:39:12,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:39:12,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:39:12,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:39:12,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:39:12,294 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:39:12,294 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:39:12,294 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:39:12,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:39:12,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:39:12,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:39:12,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:39:12,299 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:39:12,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:39:12,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:39:12,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:39:12,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:39:12,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:39:12,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:39:12,304 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:39:12,305 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:39:12,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:39:12,307 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2020-08-18 12:39:12,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:39:12,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:39:12,346 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:39:12,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:39:12,347 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:39:12,347 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:39:12,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:39:12,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:39:12,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:39:12,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:39:12,349 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:39:12,349 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:39:12,349 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:39:12,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:39:12,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:39:12,350 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:39:12,350 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:39:12,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:39:12,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:39:12,351 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:39:12,351 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:39:12,351 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:39:12,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:39:12,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:39:12,352 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:39:12,352 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:39:12,352 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-18 12:39:12,352 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:39:12,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:39:12,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:39:12,674 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:39:12,675 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:39:12,676 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:39:12,677 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 12:39:12,737 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206d9e081/721eefd59b284298a8eba5329f0231e1/FLAG900efc801 [2020-08-18 12:39:13,443 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:39:13,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 12:39:13,485 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206d9e081/721eefd59b284298a8eba5329f0231e1/FLAG900efc801 [2020-08-18 12:39:13,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/206d9e081/721eefd59b284298a8eba5329f0231e1 [2020-08-18 12:39:13,551 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:39:13,553 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:39:13,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:13,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:39:13,560 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:39:13,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:13" (1/1) ... [2020-08-18 12:39:13,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@601b4a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:13, skipping insertion in model container [2020-08-18 12:39:13,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:39:13" (1/1) ... [2020-08-18 12:39:13,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:39:13,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:39:14,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:15,001 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:39:15,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:39:15,415 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:39:15,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15 WrapperNode [2020-08-18 12:39:15,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:39:15,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:39:15,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:39:15,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:39:15,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... [2020-08-18 12:39:15,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:39:15,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:39:15,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:39:15,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:39:15,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:39:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:39:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:39:15,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 12:39:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-08-18 12:39:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-08-18 12:39:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-08-18 12:39:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-08-18 12:39:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-08-18 12:39:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 12:39:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-08-18 12:39:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-08-18 12:39:15,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-08-18 12:39:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-08-18 12:39:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-08-18 12:39:15,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-08-18 12:39:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-08-18 12:39:15,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-08-18 12:39:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-08-18 12:39:15,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-08-18 12:39:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-08-18 12:39:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-08-18 12:39:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-08-18 12:39:15,709 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-08-18 12:39:15,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-08-18 12:39:15,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-08-18 12:39:15,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-08-18 12:39:15,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-08-18 12:39:15,710 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-08-18 12:39:15,711 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-08-18 12:39:15,711 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-08-18 12:39:15,711 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-08-18 12:39:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-08-18 12:39:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 12:39:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-08-18 12:39:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:39:15,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-08-18 12:39:15,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-08-18 12:39:15,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-08-18 12:39:15,715 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-08-18 12:39:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-08-18 12:39:15,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-08-18 12:39:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-08-18 12:39:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-08-18 12:39:15,717 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-08-18 12:39:15,718 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-08-18 12:39:15,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-08-18 12:39:15,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-08-18 12:39:15,719 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-08-18 12:39:15,719 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-08-18 12:39:15,719 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-08-18 12:39:15,720 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-08-18 12:39:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:39:15,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-08-18 12:39:15,721 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-08-18 12:39:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-08-18 12:39:15,722 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-08-18 12:39:15,723 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-08-18 12:39:15,724 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-08-18 12:39:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-08-18 12:39:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-08-18 12:39:15,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-08-18 12:39:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-08-18 12:39:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-08-18 12:39:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-08-18 12:39:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-08-18 12:39:15,726 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:39:15,727 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-08-18 12:39:15,728 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-08-18 12:39:15,729 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-08-18 12:39:15,730 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-08-18 12:39:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-08-18 12:39:15,731 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-08-18 12:39:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-08-18 12:39:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-08-18 12:39:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-08-18 12:39:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-08-18 12:39:15,783 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-08-18 12:39:15,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-08-18 12:39:15,785 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:39:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-08-18 12:39:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-08-18 12:39:15,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 12:39:15,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:39:16,515 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-08-18 12:39:17,034 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-08-18 12:39:17,551 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:39:17,552 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 12:39:17,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:17 BoogieIcfgContainer [2020-08-18 12:39:17,559 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:39:17,560 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:39:17,560 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:39:17,563 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:39:17,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:39:13" (1/3) ... [2020-08-18 12:39:17,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69de41c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:17, skipping insertion in model container [2020-08-18 12:39:17,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:39:15" (2/3) ... [2020-08-18 12:39:17,565 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69de41c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:39:17, skipping insertion in model container [2020-08-18 12:39:17,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:39:17" (3/3) ... [2020-08-18 12:39:17,566 INFO L109 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-08-18 12:39:17,576 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:39:17,585 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:39:17,598 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:39:17,624 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:39:17,624 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:39:17,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:39:17,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:39:17,625 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:39:17,625 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:39:17,625 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:39:17,625 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:39:17,653 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-08-18 12:39:17,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-18 12:39:17,664 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:17,665 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:17,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:17,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:17,671 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-08-18 12:39:17,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:17,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768024943] [2020-08-18 12:39:17,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,516 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:18,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:18,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:18,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-18 12:39:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-08-18 12:39:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:18,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-18 12:39:18,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768024943] [2020-08-18 12:39:18,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 12:39:18,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 12:39:18,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206625896] [2020-08-18 12:39:18,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 12:39:18,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:18,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 12:39:18,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-18 12:39:18,802 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-08-18 12:39:19,102 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:19,711 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 12:39:19,975 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-08-18 12:39:24,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:24,564 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-08-18 12:39:24,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:39:24,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-08-18 12:39:24,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:24,601 INFO L225 Difference]: With dead ends: 945 [2020-08-18 12:39:24,601 INFO L226 Difference]: Without dead ends: 492 [2020-08-18 12:39:24,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-08-18 12:39:24,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-08-18 12:39:24,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-08-18 12:39:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-08-18 12:39:24,798 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-08-18 12:39:24,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:24,799 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-08-18 12:39:24,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 12:39:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-08-18 12:39:24,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-18 12:39:24,803 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:24,803 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:24,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:39:24,804 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:24,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:24,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-08-18 12:39:24,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:24,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307118162] [2020-08-18 12:39:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,117 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:25,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:25,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:25,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:39:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-08-18 12:39:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:25,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307118162] [2020-08-18 12:39:25,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:25,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:25,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952326632] [2020-08-18 12:39:25,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:25,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:25,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:25,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:25,252 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-08-18 12:39:25,541 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:26,127 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:39:27,217 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:39:36,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:36,012 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-08-18 12:39:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-18 12:39:36,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-08-18 12:39:36,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:36,022 INFO L225 Difference]: With dead ends: 1313 [2020-08-18 12:39:36,022 INFO L226 Difference]: Without dead ends: 893 [2020-08-18 12:39:36,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:36,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-08-18 12:39:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-08-18 12:39:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-08-18 12:39:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-08-18 12:39:36,133 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-08-18 12:39:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:36,134 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-08-18 12:39:36,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-08-18 12:39:36,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-18 12:39:36,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:36,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:36,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:39:36,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:36,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:36,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-08-18 12:39:36,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:36,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392799203] [2020-08-18 12:39:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,505 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:36,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:39:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:36,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:36,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:36,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392799203] [2020-08-18 12:39:36,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:36,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:36,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925040168] [2020-08-18 12:39:36,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:36,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:36,713 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-08-18 12:39:37,058 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:37,352 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 12:39:37,621 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:39:43,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:43,558 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-08-18 12:39:43,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:39:43,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-08-18 12:39:43,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:43,570 INFO L225 Difference]: With dead ends: 895 [2020-08-18 12:39:43,570 INFO L226 Difference]: Without dead ends: 892 [2020-08-18 12:39:43,571 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:43,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-08-18 12:39:43,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-08-18 12:39:43,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-08-18 12:39:43,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-08-18 12:39:43,723 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-08-18 12:39:43,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:43,725 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-08-18 12:39:43,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:43,727 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-08-18 12:39:43,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-18 12:39:43,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:43,731 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:43,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:39:43,732 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:43,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:43,732 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-08-18 12:39:43,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:43,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896702089] [2020-08-18 12:39:43,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,214 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:44,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:39:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:44,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:44,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:44,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896702089] [2020-08-18 12:39:44,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:44,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:44,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939101033] [2020-08-18 12:39:44,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:44,367 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:44,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:44,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:44,368 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-08-18 12:39:44,578 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:44,876 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-08-18 12:39:45,135 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-08-18 12:39:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:50,638 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-08-18 12:39:50,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:39:50,639 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-08-18 12:39:50,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:50,645 INFO L225 Difference]: With dead ends: 894 [2020-08-18 12:39:50,645 INFO L226 Difference]: Without dead ends: 891 [2020-08-18 12:39:50,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:50,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-08-18 12:39:50,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-08-18 12:39:50,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-08-18 12:39:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-08-18 12:39:50,728 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-08-18 12:39:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:50,729 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-08-18 12:39:50,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-08-18 12:39:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-08-18 12:39:50,730 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:50,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:50,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 12:39:50,731 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:50,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:50,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-08-18 12:39:50,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:50,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893601877] [2020-08-18 12:39:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,046 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:51,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:51,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:39:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:51,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:51,291 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:51,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893601877] [2020-08-18 12:39:51,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:51,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:51,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790391145] [2020-08-18 12:39:51,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:51,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:51,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:51,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:51,294 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-08-18 12:39:51,507 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:51,793 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:39:52,055 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:39:56,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:39:56,541 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-08-18 12:39:56,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:39:56,542 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-08-18 12:39:56,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:39:56,549 INFO L225 Difference]: With dead ends: 893 [2020-08-18 12:39:56,549 INFO L226 Difference]: Without dead ends: 890 [2020-08-18 12:39:56,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:39:56,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-08-18 12:39:56,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-08-18 12:39:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-08-18 12:39:56,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-08-18 12:39:56,636 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-08-18 12:39:56,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:39:56,637 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-08-18 12:39:56,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:39:56,637 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-08-18 12:39:56,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-18 12:39:56,639 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:39:56,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:39:56,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 12:39:56,639 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:39:56,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:39:56,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-08-18 12:39:56,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:39:56,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237986905] [2020-08-18 12:39:56,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:39:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:56,955 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:39:56,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:39:56,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:39:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:39:57,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:39:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:39:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:39:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:39:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:39:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:39:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:39:57,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237986905] [2020-08-18 12:39:57,110 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:39:57,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:39:57,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670301104] [2020-08-18 12:39:57,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:39:57,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:39:57,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:39:57,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:39:57,112 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-08-18 12:39:57,331 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:39:57,627 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:39:57,932 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:40:02,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:02,660 INFO L93 Difference]: Finished difference Result 892 states and 1164 transitions. [2020-08-18 12:40:02,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:40:02,661 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-18 12:40:02,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:02,667 INFO L225 Difference]: With dead ends: 892 [2020-08-18 12:40:02,667 INFO L226 Difference]: Without dead ends: 889 [2020-08-18 12:40:02,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:40:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-08-18 12:40:02,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 792. [2020-08-18 12:40:02,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 792 states. [2020-08-18 12:40:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1017 transitions. [2020-08-18 12:40:02,750 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1017 transitions. Word has length 61 [2020-08-18 12:40:02,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:02,750 INFO L479 AbstractCegarLoop]: Abstraction has 792 states and 1017 transitions. [2020-08-18 12:40:02,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:40:02,750 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1017 transitions. [2020-08-18 12:40:02,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-18 12:40:02,752 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:40:02,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:40:02,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 12:40:02,752 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:40:02,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:40:02,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2067811705, now seen corresponding path program 1 times [2020-08-18 12:40:02,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:40:02,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140920415] [2020-08-18 12:40:02,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:40:02,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,038 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-08-18 12:40:03,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:40:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:40:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-18 12:40:03,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-18 12:40:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-18 12:40:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-08-18 12:40:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-08-18 12:40:03,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-18 12:40:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:40:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-08-18 12:40:03,171 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140920415] [2020-08-18 12:40:03,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:40:03,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-18 12:40:03,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443561231] [2020-08-18 12:40:03,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 12:40:03,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:40:03,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 12:40:03,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:40:03,173 INFO L87 Difference]: Start difference. First operand 792 states and 1017 transitions. Second operand 6 states. [2020-08-18 12:40:03,388 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-08-18 12:40:03,696 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-08-18 12:40:03,958 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-08-18 12:40:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:40:10,557 INFO L93 Difference]: Finished difference Result 889 states and 1161 transitions. [2020-08-18 12:40:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 12:40:10,559 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-08-18 12:40:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:40:10,560 INFO L225 Difference]: With dead ends: 889 [2020-08-18 12:40:10,560 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:40:10,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-18 12:40:10,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:40:10,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:40:10,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:40:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:40:10,564 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 62 [2020-08-18 12:40:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:40:10,565 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:40:10,565 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 12:40:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:40:10,565 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:40:10,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 12:40:10,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:40:11,007 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 226 DAG size of output: 166