/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 false -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-eb0fd7c [2020-09-21 11:00:14,129 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:00:14,132 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:00:14,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:00:14,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:00:14,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:00:14,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:00:14,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:00:14,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:00:14,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:00:14,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:00:14,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:00:14,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:00:14,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:00:14,179 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:00:14,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:00:14,182 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:00:14,183 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:00:14,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:00:14,188 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:00:14,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:00:14,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:00:14,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:00:14,197 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:00:14,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:00:14,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:00:14,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:00:14,208 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:00:14,209 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:00:14,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:00:14,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:00:14,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:00:14,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:00:14,224 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:00:14,225 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:00:14,225 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:00:14,226 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:00:14,226 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:00:14,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:00:14,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:00:14,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:00:14,229 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 [2020-09-21 11:00:14,273 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:00:14,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:00:14,275 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:00:14,276 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:00:14,276 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:00:14,276 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:00:14,276 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:00:14,277 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:00:14,277 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:00:14,277 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:00:14,278 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:00:14,278 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:00:14,278 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:00:14,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:00:14,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:00:14,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:00:14,279 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:00:14,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:00:14,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:00:14,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:00:14,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:00:14,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:00:14,281 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:00:14,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:00:14,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:00:14,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:00:14,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-21 11:00:14,282 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 -> false [2020-09-21 11:00:14,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:00:14,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:00:14,758 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:00:14,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:00:14,761 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:00:14,762 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 11:00:14,844 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc9b3236/163cd3f6f8034220a6081bf27e860eb2/FLAGebf509cd0 [2020-09-21 11:00:15,810 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:00:15,811 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--ti--wlcore--wlcore_spi.ko-entry_point.cil.out.i [2020-09-21 11:00:15,874 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc9b3236/163cd3f6f8034220a6081bf27e860eb2/FLAGebf509cd0 [2020-09-21 11:00:16,236 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1cc9b3236/163cd3f6f8034220a6081bf27e860eb2 [2020-09-21 11:00:16,250 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:00:16,255 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:00:16,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:16,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:00:16,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:00:16,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:16" (1/1) ... [2020-09-21 11:00:16,266 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ccd168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:16, skipping insertion in model container [2020-09-21 11:00:16,267 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:00:16" (1/1) ... [2020-09-21 11:00:16,276 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:00:16,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:00:17,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:17,914 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:00:18,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:00:18,371 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:00:18,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18 WrapperNode [2020-09-21 11:00:18,372 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:00:18,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:00:18,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:00:18,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:00:18,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (1/1) ... [2020-09-21 11:00:18,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:00:18,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:00:18,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:00:18,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:00:18,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (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 [2020-09-21 11:00:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:00:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:00:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 11:00:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2020-09-21 11:00:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2020-09-21 11:00:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2020-09-21 11:00:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2020-09-21 11:00:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2020-09-21 11:00:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 11:00:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-09-21 11:00:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2020-09-21 11:00:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2020-09-21 11:00:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ulong [2020-09-21 11:00:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2020-09-21 11:00:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2020-09-21 11:00:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2020-09-21 11:00:18,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_trap [2020-09-21 11:00:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure to_spi_device [2020-09-21 11:00:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_set_drvdata [2020-09-21 11:00:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_get_drvdata [2020-09-21 11:00:18,711 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_unregister_driver [2020-09-21 11:00:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_init [2020-09-21 11:00:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_message_add_tail [2020-09-21 11:00:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_reset [2020-09-21 11:00:18,712 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_init [2020-09-21 11:00:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_read_busy [2020-09-21 11:00:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_read [2020-09-21 11:00:18,713 INFO L138 BoogieDeclarations]: Found implementation of procedure wl12xx_spi_raw_write [2020-09-21 11:00:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_probe [2020-09-21 11:00:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_remove [2020-09-21 11:00:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_init [2020-09-21 11:00:18,714 INFO L138 BoogieDeclarations]: Found implementation of procedure wl1271_spi_driver_exit [2020-09-21 11:00:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 11:00:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_spi_driver_1 [2020-09-21 11:00:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:00:18,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2020-09-21 11:00:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2020-09-21 11:00:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2020-09-21 11:00:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_put_intf [2020-09-21 11:00:18,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2020-09-21 11:00:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_int_urb [2020-09-21 11:00:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_fill_bulk_urb [2020-09-21 11:00:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2020-09-21 11:00:18,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2020-09-21 11:00:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2020-09-21 11:00:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2020-09-21 11:00:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2020-09-21 11:00:18,718 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_register [2020-09-21 11:00:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_serial_deregister [2020-09-21 11:00:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-09-21 11:00:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-09-21 11:00:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure crc7 [2020-09-21 11:00:18,719 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2020-09-21 11:00:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2020-09-21 11:00:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2020-09-21 11:00:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2020-09-21 11:00:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-09-21 11:00:18,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_2 [2020-09-21 11:00:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_setup_2 [2020-09-21 11:00:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add [2020-09-21 11:00:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_data [2020-09-21 11:00:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_add_resources [2020-09-21 11:00:18,721 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_alloc [2020-09-21 11:00:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_put [2020-09-21 11:00:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_device_unregister [2020-09-21 11:00:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_register_driver [2020-09-21 11:00:18,722 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_setup [2020-09-21 11:00:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure spi_sync [2020-09-21 11:00:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2020-09-21 11:00:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2020-09-21 11:00:18,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2020-09-21 11:00:18,724 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2020-09-21 11:00:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:00:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2020-09-21 11:00:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2020-09-21 11:00:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2020-09-21 11:00:18,724 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2020-09-21 11:00:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-21 11:00:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-09-21 11:00:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2020-09-21 11:00:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-21 11:00:18,725 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2020-09-21 11:00:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2020-09-21 11:00:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2020-09-21 11:00:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2020-09-21 11:00:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2020-09-21 11:00:18,726 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-09-21 11:00:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2020-09-21 11:00:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2020-09-21 11:00:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2020-09-21 11:00:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2020-09-21 11:00:18,727 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_size_t [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ulong [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 11:00:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 11:00:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-21 11:00:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2020-09-21 11:00:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2020-09-21 11:00:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ulong [2020-09-21 11:00:18,729 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2020-09-21 11:00:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2020-09-21 11:00:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_trap [2020-09-21 11:00:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_wl1271_if_operations_2 [2020-09-21 11:00:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_spi_driver_1 [2020-09-21 11:00:18,730 INFO L130 BoogieDeclarations]: Found specification of procedure crc7 [2020-09-21 11:00:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure to_spi_device [2020-09-21 11:00:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure spi_set_drvdata [2020-09-21 11:00:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure spi_get_drvdata [2020-09-21 11:00:18,731 INFO L130 BoogieDeclarations]: Found specification of procedure spi_register_driver [2020-09-21 11:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure spi_unregister_driver [2020-09-21 11:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_init [2020-09-21 11:00:18,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2020-09-21 11:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure spi_message_add_tail [2020-09-21 11:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure spi_setup [2020-09-21 11:00:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure spi_sync [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_unregister [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_alloc [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_resources [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add_data [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_add [2020-09-21 11:00:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure platform_device_put [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_reset [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_init [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-21 11:00:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_read_busy [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_read [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl12xx_spi_raw_write [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_probe [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_remove [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_init [2020-09-21 11:00:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure wl1271_spi_driver_exit [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_2 [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_setup_2 [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:00:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_put_intf [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_int_urb [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_fill_bulk_urb [2020-09-21 11:00:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2020-09-21 11:00:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_register [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_serial_deregister [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-21 11:00:18,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:00:19,845 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2020-09-21 11:00:20,356 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2020-09-21 11:00:20,973 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:00:20,973 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:00:20,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:20 BoogieIcfgContainer [2020-09-21 11:00:20,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:00:20,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:00:20,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:00:20,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:00:20,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:00:16" (1/3) ... [2020-09-21 11:00:20,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56913825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:20, skipping insertion in model container [2020-09-21 11:00:20,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:00:18" (2/3) ... [2020-09-21 11:00:20,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56913825 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:00:20, skipping insertion in model container [2020-09-21 11:00:20,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:00:20" (3/3) ... [2020-09-21 11:00:20,998 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 [2020-09-21 11:00:21,010 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:00:21,024 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:00:21,047 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:00:21,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:00:21,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:00:21,081 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:00:21,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:00:21,081 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:00:21,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:00:21,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:00:21,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:00:21,115 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states. [2020-09-21 11:00:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-21 11:00:21,128 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:21,130 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] [2020-09-21 11:00:21,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:21,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:21,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2051707004, now seen corresponding path program 1 times [2020-09-21 11:00:21,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:21,147 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2273344] [2020-09-21 11:00:21,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,070 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:00:22,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-21 11:00:22,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-09-21 11:00:22,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-21 11:00:22,512 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2273344] [2020-09-21 11:00:22,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:00:22,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:00:22,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270356171] [2020-09-21 11:00:22,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:00:22,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:22,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:00:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:00:22,547 INFO L87 Difference]: Start difference. First operand 469 states. Second operand 7 states. [2020-09-21 11:00:22,878 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:00:23,629 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 11:00:23,941 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-09-21 11:00:30,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:30,552 INFO L93 Difference]: Finished difference Result 945 states and 1293 transitions. [2020-09-21 11:00:30,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:00:30,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-21 11:00:30,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:30,579 INFO L225 Difference]: With dead ends: 945 [2020-09-21 11:00:30,580 INFO L226 Difference]: Without dead ends: 492 [2020-09-21 11:00:30,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:00:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2020-09-21 11:00:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 437. [2020-09-21 11:00:30,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-21 11:00:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 559 transitions. [2020-09-21 11:00:30,747 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 559 transitions. Word has length 52 [2020-09-21 11:00:30,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:30,748 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 559 transitions. [2020-09-21 11:00:30,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:00:30,748 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 559 transitions. [2020-09-21 11:00:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 11:00:30,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:30,753 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] [2020-09-21 11:00:30,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:00:30,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:30,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:30,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1503436246, now seen corresponding path program 1 times [2020-09-21 11:00:30,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:30,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255193491] [2020-09-21 11:00:30,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,320 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:00:31,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:00:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-09-21 11:00:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:31,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:31,626 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:00:31,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255193491] [2020-09-21 11:00:31,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:31,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:00:31,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601575113] [2020-09-21 11:00:31,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:00:31,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:31,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:00:31,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:00:31,632 INFO L87 Difference]: Start difference. First operand 437 states and 559 transitions. Second operand 6 states. [2020-09-21 11:00:31,881 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:00:32,623 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 11:00:33,808 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:00:41,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:41,397 INFO L93 Difference]: Finished difference Result 1313 states and 1710 transitions. [2020-09-21 11:00:41,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 11:00:41,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 54 [2020-09-21 11:00:41,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:41,409 INFO L225 Difference]: With dead ends: 1313 [2020-09-21 11:00:41,409 INFO L226 Difference]: Without dead ends: 893 [2020-09-21 11:00:41,416 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:00:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2020-09-21 11:00:41,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 796. [2020-09-21 11:00:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 796 states. [2020-09-21 11:00:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1025 transitions. [2020-09-21 11:00:41,559 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1025 transitions. Word has length 54 [2020-09-21 11:00:41,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:41,559 INFO L479 AbstractCegarLoop]: Abstraction has 796 states and 1025 transitions. [2020-09-21 11:00:41,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:00:41,560 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1025 transitions. [2020-09-21 11:00:41,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-21 11:00:41,564 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:41,565 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] [2020-09-21 11:00:41,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:00:41,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:41,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:41,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1632677837, now seen corresponding path program 1 times [2020-09-21 11:00:41,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:41,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117424312] [2020-09-21 11:00:41,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,033 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:00:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:42,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:42,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:00:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:00:42,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:42,350 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:00:42,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117424312] [2020-09-21 11:00:42,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:42,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:00:42,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562378570] [2020-09-21 11:00:42,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:00:42,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:42,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:00:42,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:00:42,353 INFO L87 Difference]: Start difference. First operand 796 states and 1025 transitions. Second operand 6 states. [2020-09-21 11:00:42,602 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:00:43,026 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 11:00:43,389 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:00:49,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:49,735 INFO L93 Difference]: Finished difference Result 895 states and 1170 transitions. [2020-09-21 11:00:49,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:00:49,736 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-09-21 11:00:49,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:49,742 INFO L225 Difference]: With dead ends: 895 [2020-09-21 11:00:49,742 INFO L226 Difference]: Without dead ends: 892 [2020-09-21 11:00:49,743 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 [2020-09-21 11:00:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2020-09-21 11:00:49,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 795. [2020-09-21 11:00:49,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795 states. [2020-09-21 11:00:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1023 transitions. [2020-09-21 11:00:49,864 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1023 transitions. Word has length 58 [2020-09-21 11:00:49,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:49,864 INFO L479 AbstractCegarLoop]: Abstraction has 795 states and 1023 transitions. [2020-09-21 11:00:49,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:00:49,865 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1023 transitions. [2020-09-21 11:00:49,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-21 11:00:49,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:49,867 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] [2020-09-21 11:00:49,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:00:49,868 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:49,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:49,868 INFO L82 PathProgramCache]: Analyzing trace with hash 926229248, now seen corresponding path program 1 times [2020-09-21 11:00:49,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:49,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1113256765] [2020-09-21 11:00:49,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,371 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:00:50,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:50,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:50,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:50,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:00:50,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:00:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:50,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:50,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:00:50,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1113256765] [2020-09-21 11:00:50,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:50,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:00:50,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115327214] [2020-09-21 11:00:50,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:00:50,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:00:50,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:00:50,684 INFO L87 Difference]: Start difference. First operand 795 states and 1023 transitions. Second operand 6 states. [2020-09-21 11:00:50,909 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:00:51,299 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-09-21 11:00:51,694 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-09-21 11:00:58,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:00:58,734 INFO L93 Difference]: Finished difference Result 894 states and 1168 transitions. [2020-09-21 11:00:58,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:00:58,735 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-09-21 11:00:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:00:58,742 INFO L225 Difference]: With dead ends: 894 [2020-09-21 11:00:58,742 INFO L226 Difference]: Without dead ends: 891 [2020-09-21 11:00:58,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:00:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2020-09-21 11:00:58,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 794. [2020-09-21 11:00:58,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 794 states. [2020-09-21 11:00:58,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 794 states to 794 states and 1021 transitions. [2020-09-21 11:00:58,837 INFO L78 Accepts]: Start accepts. Automaton has 794 states and 1021 transitions. Word has length 59 [2020-09-21 11:00:58,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:00:58,837 INFO L479 AbstractCegarLoop]: Abstraction has 794 states and 1021 transitions. [2020-09-21 11:00:58,837 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:00:58,838 INFO L276 IsEmpty]: Start isEmpty. Operand 794 states and 1021 transitions. [2020-09-21 11:00:58,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-09-21 11:00:58,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:00:58,839 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] [2020-09-21 11:00:58,840 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:00:58,840 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:00:58,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:00:58,840 INFO L82 PathProgramCache]: Analyzing trace with hash -1352024874, now seen corresponding path program 1 times [2020-09-21 11:00:58,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:00:58,841 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [870152882] [2020-09-21 11:00:58,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:00:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,319 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:00:59,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:00:59,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:00:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:00:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:00:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:00:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:00:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:00:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:00:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:00:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:00:59,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [870152882] [2020-09-21 11:00:59,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:00:59,578 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:00:59,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632400083] [2020-09-21 11:00:59,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:00:59,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:00:59,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:00:59,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:00:59,580 INFO L87 Difference]: Start difference. First operand 794 states and 1021 transitions. Second operand 6 states. [2020-09-21 11:00:59,814 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:01:00,121 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 11:01:00,432 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-09-21 11:01:06,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:01:06,522 INFO L93 Difference]: Finished difference Result 893 states and 1166 transitions. [2020-09-21 11:01:06,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:01:06,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-09-21 11:01:06,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:01:06,530 INFO L225 Difference]: With dead ends: 893 [2020-09-21 11:01:06,530 INFO L226 Difference]: Without dead ends: 890 [2020-09-21 11:01:06,531 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 [2020-09-21 11:01:06,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-09-21 11:01:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 793. [2020-09-21 11:01:06,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 793 states. [2020-09-21 11:01:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1019 transitions. [2020-09-21 11:01:06,612 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1019 transitions. Word has length 60 [2020-09-21 11:01:06,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:01:06,613 INFO L479 AbstractCegarLoop]: Abstraction has 793 states and 1019 transitions. [2020-09-21 11:01:06,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:01:06,613 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1019 transitions. [2020-09-21 11:01:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-21 11:01:06,615 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:01:06,615 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] [2020-09-21 11:01:06,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:01:06,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:01:06,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:01:06,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1036546243, now seen corresponding path program 1 times [2020-09-21 11:01:06,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:01:06,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642780693] [2020-09-21 11:01:06,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:01:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,076 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-09-21 11:01:07,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:01:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-21 11:01:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-21 11:01:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-21 11:01:07,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-21 11:01:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-21 11:01:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-21 11:01:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-21 11:01:07,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:01:07,381 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-21 11:01:07,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642780693] [2020-09-21 11:01:07,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:01:07,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 11:01:07,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486901127] [2020-09-21 11:01:07,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:01:07,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:01:07,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:01:07,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:01:07,386 INFO L87 Difference]: Start difference. First operand 793 states and 1019 transitions. Second operand 6 states. [2020-09-21 11:01:07,666 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-09-21 11:01:07,979 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 198 [2020-09-21 11:01:08,265 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189