./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:49:20,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:49:20,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:49:20,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:49:20,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:49:20,570 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:49:20,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:49:20,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:49:20,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:49:20,573 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:49:20,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:49:20,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:49:20,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:49:20,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:49:20,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:49:20,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:49:20,583 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:49:20,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:49:20,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:49:20,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:49:20,593 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:49:20,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:49:20,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:49:20,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:49:20,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:49:20,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:49:20,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:49:20,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:49:20,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:49:20,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:49:20,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:49:20,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:49:20,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:49:20,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:49:20,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:49:20,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:49:20,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:49:20,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:49:20,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:49:20,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:49:20,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:49:20,611 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:49:20,637 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:49:20,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:49:20,638 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:49:20,638 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:49:20,640 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:49:20,640 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:49:20,640 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:49:20,640 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:49:20,641 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:49:20,641 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:49:20,641 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:49:20,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:49:20,642 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:49:20,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:49:20,642 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:49:20,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:49:20,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:49:20,643 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:49:20,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:49:20,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:49:20,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:49:20,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:49:20,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:49:20,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:49:20,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:49:20,644 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:49:20,644 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:49:20,645 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:49:20,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:49:20,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-11-06 13:49:20,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:49:20,895 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:49:20,898 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:49:20,898 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:49:20,900 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:49:20,900 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-06 13:49:20,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ce61aab/99b6f1ced7734c9590bd833a4d5f2f63/FLAGf040b74b4 [2021-11-06 13:49:21,521 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:49:21,522 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-06 13:49:21,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ce61aab/99b6f1ced7734c9590bd833a4d5f2f63/FLAGf040b74b4 [2021-11-06 13:49:21,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3ce61aab/99b6f1ced7734c9590bd833a4d5f2f63 [2021-11-06 13:49:21,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:49:21,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:49:21,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:49:21,768 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:49:21,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:49:21,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:49:21" (1/1) ... [2021-11-06 13:49:21,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0f6a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:21, skipping insertion in model container [2021-11-06 13:49:21,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:49:21" (1/1) ... [2021-11-06 13:49:21,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:49:21,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:49:22,770 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-06 13:49:22,861 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:49:22,897 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:49:23,085 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-06 13:49:23,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:49:23,218 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:49:23,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23 WrapperNode [2021-11-06 13:49:23,219 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:49:23,221 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:49:23,221 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:49:23,221 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:49:23,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,286 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:49:23,524 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:49:23,524 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:49:23,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:49:23,582 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,609 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,802 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:49:23,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:49:23,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:49:23,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:49:23,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (1/1) ... [2021-11-06 13:49:23,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:49:23,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:49:23,993 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 13:49:24,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 13:49:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:49:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:49:24,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:49:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:49:24,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:49:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2021-11-06 13:49:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2021-11-06 13:49:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:49:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:49:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2021-11-06 13:49:24,037 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2021-11-06 13:49:24,037 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2021-11-06 13:49:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2021-11-06 13:49:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:49:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:49:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:49:24,038 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-06 13:49:24,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-06 13:49:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:49:24,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:49:24,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:49:43,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:49:43,621 INFO L299 CfgBuilder]: Removed 1265 assume(true) statements. [2021-11-06 13:49:43,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:49:43 BoogieIcfgContainer [2021-11-06 13:49:43,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:49:43,627 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:49:43,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:49:43,631 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:49:43,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:49:21" (1/3) ... [2021-11-06 13:49:43,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0fd47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:49:43, skipping insertion in model container [2021-11-06 13:49:43,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:49:23" (2/3) ... [2021-11-06 13:49:43,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e0fd47f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:49:43, skipping insertion in model container [2021-11-06 13:49:43,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:49:43" (3/3) ... [2021-11-06 13:49:43,633 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-06 13:49:43,638 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:49:43,638 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-06 13:49:43,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:49:43,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-06 13:49:43,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-06 13:49:43,730 INFO L276 IsEmpty]: Start isEmpty. Operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-06 13:49:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-06 13:49:43,738 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:43,738 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:43,739 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:43,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:43,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2065204851, now seen corresponding path program 1 times [2021-11-06 13:49:43,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:43,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134347857] [2021-11-06 13:49:43,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:43,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:44,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:44,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:44,277 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134347857] [2021-11-06 13:49:44,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134347857] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:44,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:44,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:44,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466367528] [2021-11-06 13:49:44,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:44,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:44,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:44,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:44,301 INFO L87 Difference]: Start difference. First operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:46,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:46,708 INFO L93 Difference]: Finished difference Result 4354 states and 6414 transitions. [2021-11-06 13:49:46,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:46,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-06 13:49:46,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:46,729 INFO L225 Difference]: With dead ends: 4354 [2021-11-06 13:49:46,730 INFO L226 Difference]: Without dead ends: 2892 [2021-11-06 13:49:46,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-11-06 13:49:46,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2888. [2021-11-06 13:49:46,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2863 states have (on average 1.4596577017114913) internal successors, (4179), 2869 states have internal predecessors, (4179), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:46,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4199 transitions. [2021-11-06 13:49:46,890 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4199 transitions. Word has length 19 [2021-11-06 13:49:46,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:46,891 INFO L470 AbstractCegarLoop]: Abstraction has 2888 states and 4199 transitions. [2021-11-06 13:49:46,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:46,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4199 transitions. [2021-11-06 13:49:46,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:49:46,899 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:46,899 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:46,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:49:46,900 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:46,902 INFO L85 PathProgramCache]: Analyzing trace with hash 677414015, now seen corresponding path program 1 times [2021-11-06 13:49:46,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:46,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060179724] [2021-11-06 13:49:46,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:46,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:46,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:47,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:47,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060179724] [2021-11-06 13:49:47,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060179724] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:47,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:47,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:47,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781009776] [2021-11-06 13:49:47,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:47,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:47,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:47,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:47,094 INFO L87 Difference]: Start difference. First operand 2888 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:47,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:47,212 INFO L93 Difference]: Finished difference Result 2918 states and 4227 transitions. [2021-11-06 13:49:47,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:47,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 13:49:47,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:47,226 INFO L225 Difference]: With dead ends: 2918 [2021-11-06 13:49:47,226 INFO L226 Difference]: Without dead ends: 2903 [2021-11-06 13:49:47,228 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-06 13:49:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2888. [2021-11-06 13:49:47,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2863 states have (on average 1.4593084177436255) internal successors, (4178), 2869 states have internal predecessors, (4178), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:47,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4198 transitions. [2021-11-06 13:49:47,308 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4198 transitions. Word has length 23 [2021-11-06 13:49:47,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:47,309 INFO L470 AbstractCegarLoop]: Abstraction has 2888 states and 4198 transitions. [2021-11-06 13:49:47,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:47,310 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4198 transitions. [2021-11-06 13:49:47,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:49:47,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:47,313 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:49:47,314 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:47,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:47,321 INFO L85 PathProgramCache]: Analyzing trace with hash 677473597, now seen corresponding path program 1 times [2021-11-06 13:49:47,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:47,322 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213183198] [2021-11-06 13:49:47,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:47,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:47,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:47,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:47,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:47,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213183198] [2021-11-06 13:49:47,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213183198] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:47,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:47,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:47,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511022632] [2021-11-06 13:49:47,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:47,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:47,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:47,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:47,505 INFO L87 Difference]: Start difference. First operand 2888 states and 4198 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:49,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:49,721 INFO L93 Difference]: Finished difference Result 2888 states and 4198 transitions. [2021-11-06 13:49:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:49,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 13:49:49,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:49,732 INFO L225 Difference]: With dead ends: 2888 [2021-11-06 13:49:49,732 INFO L226 Difference]: Without dead ends: 2886 [2021-11-06 13:49:49,734 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:49,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2021-11-06 13:49:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2021-11-06 13:49:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2862 states have (on average 1.4591194968553458) internal successors, (4176), 2867 states have internal predecessors, (4176), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 4196 transitions. [2021-11-06 13:49:49,811 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 4196 transitions. Word has length 23 [2021-11-06 13:49:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:49,811 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 4196 transitions. [2021-11-06 13:49:49,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 4196 transitions. [2021-11-06 13:49:49,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 13:49:49,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:49,813 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:49,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:49:49,814 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:49,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -473152160, now seen corresponding path program 1 times [2021-11-06 13:49:49,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:49,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837094655] [2021-11-06 13:49:49,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:49,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:49,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:49,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837094655] [2021-11-06 13:49:49,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837094655] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:49,960 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:49,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:49,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366867246] [2021-11-06 13:49:49,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:49,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:49,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:49,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:49,962 INFO L87 Difference]: Start difference. First operand 2886 states and 4196 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:52,210 INFO L93 Difference]: Finished difference Result 2886 states and 4196 transitions. [2021-11-06 13:49:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:52,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-06 13:49:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:52,222 INFO L225 Difference]: With dead ends: 2886 [2021-11-06 13:49:52,222 INFO L226 Difference]: Without dead ends: 2884 [2021-11-06 13:49:52,225 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:52,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-11-06 13:49:52,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2021-11-06 13:49:52,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2861 states have (on average 1.458930443900734) internal successors, (4174), 2865 states have internal predecessors, (4174), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:52,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4194 transitions. [2021-11-06 13:49:52,324 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4194 transitions. Word has length 24 [2021-11-06 13:49:52,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:52,324 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4194 transitions. [2021-11-06 13:49:52,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:52,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4194 transitions. [2021-11-06 13:49:52,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-06 13:49:52,326 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:52,326 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:52,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:49:52,327 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:52,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1782812249, now seen corresponding path program 1 times [2021-11-06 13:49:52,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:52,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046690206] [2021-11-06 13:49:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:52,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:52,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:52,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:52,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046690206] [2021-11-06 13:49:52,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046690206] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:52,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:52,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:52,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227318052] [2021-11-06 13:49:52,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:52,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:52,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:52,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:52,485 INFO L87 Difference]: Start difference. First operand 2884 states and 4194 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:54,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:54,724 INFO L93 Difference]: Finished difference Result 2884 states and 4194 transitions. [2021-11-06 13:49:54,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:54,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-06 13:49:54,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:54,735 INFO L225 Difference]: With dead ends: 2884 [2021-11-06 13:49:54,735 INFO L226 Difference]: Without dead ends: 2882 [2021-11-06 13:49:54,736 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-11-06 13:49:54,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2021-11-06 13:49:54,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2860 states have (on average 1.4587412587412587) internal successors, (4172), 2863 states have internal predecessors, (4172), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:54,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4192 transitions. [2021-11-06 13:49:54,836 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4192 transitions. Word has length 25 [2021-11-06 13:49:54,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:54,837 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 4192 transitions. [2021-11-06 13:49:54,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:54,837 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4192 transitions. [2021-11-06 13:49:54,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-06 13:49:54,839 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:54,839 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:54,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:49:54,840 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:54,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:54,843 INFO L85 PathProgramCache]: Analyzing trace with hash 567397962, now seen corresponding path program 1 times [2021-11-06 13:49:54,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:54,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116885585] [2021-11-06 13:49:54,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:54,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:54,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:54,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:54,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116885585] [2021-11-06 13:49:54,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116885585] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:54,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:54,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:54,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762490034] [2021-11-06 13:49:54,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:54,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:54,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:54,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:54,997 INFO L87 Difference]: Start difference. First operand 2882 states and 4192 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:57,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:57,262 INFO L93 Difference]: Finished difference Result 2882 states and 4192 transitions. [2021-11-06 13:49:57,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:57,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-06 13:49:57,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:57,272 INFO L225 Difference]: With dead ends: 2882 [2021-11-06 13:49:57,272 INFO L226 Difference]: Without dead ends: 2880 [2021-11-06 13:49:57,274 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:57,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-11-06 13:49:57,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2021-11-06 13:49:57,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2859 states have (on average 1.458551941238195) internal successors, (4170), 2861 states have internal predecessors, (4170), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-06 13:49:57,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4190 transitions. [2021-11-06 13:49:57,374 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4190 transitions. Word has length 26 [2021-11-06 13:49:57,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:57,376 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4190 transitions. [2021-11-06 13:49:57,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:57,377 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4190 transitions. [2021-11-06 13:49:57,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-06 13:49:57,379 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:57,379 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:57,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:49:57,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:57,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:57,380 INFO L85 PathProgramCache]: Analyzing trace with hash 409470481, now seen corresponding path program 1 times [2021-11-06 13:49:57,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:57,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164064488] [2021-11-06 13:49:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:57,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:49:57,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:49:57,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:49:57,491 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:49:57,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164064488] [2021-11-06 13:49:57,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164064488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:49:57,491 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:49:57,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:49:57,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806394647] [2021-11-06 13:49:57,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:49:57,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:49:57,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:49:57,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:57,493 INFO L87 Difference]: Start difference. First operand 2880 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:59,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:49:59,785 INFO L93 Difference]: Finished difference Result 6373 states and 9225 transitions. [2021-11-06 13:49:59,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:49:59,785 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-06 13:49:59,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:49:59,800 INFO L225 Difference]: With dead ends: 6373 [2021-11-06 13:49:59,801 INFO L226 Difference]: Without dead ends: 3490 [2021-11-06 13:49:59,808 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:49:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2021-11-06 13:49:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3485. [2021-11-06 13:49:59,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3455 states have (on average 1.4396526772793055) internal successors, (4974), 3455 states have internal predecessors, (4974), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-06 13:49:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5008 transitions. [2021-11-06 13:49:59,926 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5008 transitions. Word has length 27 [2021-11-06 13:49:59,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:49:59,926 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 5008 transitions. [2021-11-06 13:49:59,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:49:59,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5008 transitions. [2021-11-06 13:49:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-06 13:49:59,935 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:49:59,935 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:49:59,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:49:59,936 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:49:59,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:49:59,936 INFO L85 PathProgramCache]: Analyzing trace with hash 591192921, now seen corresponding path program 1 times [2021-11-06 13:49:59,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:49:59,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720554210] [2021-11-06 13:49:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:49:59,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:00,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:00,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:50:00,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:00,114 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720554210] [2021-11-06 13:50:00,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720554210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:00,115 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:00,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:50:00,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615934062] [2021-11-06 13:50:00,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:50:00,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:00,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:50:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:00,117 INFO L87 Difference]: Start difference. First operand 3485 states and 5008 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:00,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:00,321 INFO L93 Difference]: Finished difference Result 8023 states and 11638 transitions. [2021-11-06 13:50:00,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:50:00,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-06 13:50:00,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:00,339 INFO L225 Difference]: With dead ends: 8023 [2021-11-06 13:50:00,339 INFO L226 Difference]: Without dead ends: 4541 [2021-11-06 13:50:00,347 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:00,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-11-06 13:50:00,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2021-11-06 13:50:00,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4511 states have (on average 1.462425182886278) internal successors, (6597), 4511 states have internal predecessors, (6597), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-06 13:50:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6631 transitions. [2021-11-06 13:50:00,560 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6631 transitions. Word has length 112 [2021-11-06 13:50:00,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:00,560 INFO L470 AbstractCegarLoop]: Abstraction has 4541 states and 6631 transitions. [2021-11-06 13:50:00,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:00,561 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6631 transitions. [2021-11-06 13:50:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 13:50:00,573 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:00,574 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:00,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-06 13:50:00,574 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:00,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash -556825001, now seen corresponding path program 1 times [2021-11-06 13:50:00,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:00,576 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025741157] [2021-11-06 13:50:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:00,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:00,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 13:50:00,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:00,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025741157] [2021-11-06 13:50:00,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025741157] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:00,789 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:00,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:00,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034159489] [2021-11-06 13:50:00,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:00,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:00,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:00,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:00,792 INFO L87 Difference]: Start difference. First operand 4541 states and 6631 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:00,968 INFO L93 Difference]: Finished difference Result 9095 states and 13297 transitions. [2021-11-06 13:50:00,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:00,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-06 13:50:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:00,999 INFO L225 Difference]: With dead ends: 9095 [2021-11-06 13:50:00,999 INFO L226 Difference]: Without dead ends: 4557 [2021-11-06 13:50:01,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:01,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-11-06 13:50:01,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4553. [2021-11-06 13:50:01,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4521 states have (on average 1.4614023446140234) internal successors, (6607), 4523 states have internal predecessors, (6607), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-06 13:50:01,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6643 transitions. [2021-11-06 13:50:01,175 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6643 transitions. Word has length 130 [2021-11-06 13:50:01,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:01,176 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6643 transitions. [2021-11-06 13:50:01,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6643 transitions. [2021-11-06 13:50:01,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-06 13:50:01,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:01,187 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:01,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-06 13:50:01,187 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:01,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash 2119167381, now seen corresponding path program 1 times [2021-11-06 13:50:01,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:01,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333234911] [2021-11-06 13:50:01,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:01,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:01,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 13:50:01,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:01,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333234911] [2021-11-06 13:50:01,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333234911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:01,364 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:01,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:01,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802824905] [2021-11-06 13:50:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:01,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:01,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:01,366 INFO L87 Difference]: Start difference. First operand 4553 states and 6643 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:01,542 INFO L93 Difference]: Finished difference Result 9127 states and 13329 transitions. [2021-11-06 13:50:01,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:01,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-06 13:50:01,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:01,555 INFO L225 Difference]: With dead ends: 9127 [2021-11-06 13:50:01,555 INFO L226 Difference]: Without dead ends: 4577 [2021-11-06 13:50:01,565 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:01,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2021-11-06 13:50:01,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4565. [2021-11-06 13:50:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4533 states have (on average 1.4601808956540923) internal successors, (6619), 4535 states have internal predecessors, (6619), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-06 13:50:01,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6655 transitions. [2021-11-06 13:50:01,710 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6655 transitions. Word has length 130 [2021-11-06 13:50:01,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:01,711 INFO L470 AbstractCegarLoop]: Abstraction has 4565 states and 6655 transitions. [2021-11-06 13:50:01,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:01,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6655 transitions. [2021-11-06 13:50:01,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-06 13:50:01,719 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:01,720 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:01,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-06 13:50:01,720 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:01,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:01,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1131900254, now seen corresponding path program 1 times [2021-11-06 13:50:01,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:01,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669174674] [2021-11-06 13:50:01,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:01,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:01,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:01,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 13:50:01,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:01,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669174674] [2021-11-06 13:50:01,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669174674] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:01,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:01,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:01,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895858424] [2021-11-06 13:50:01,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:01,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:01,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:01,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:01,948 INFO L87 Difference]: Start difference. First operand 4565 states and 6655 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:02,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:02,118 INFO L93 Difference]: Finished difference Result 9163 states and 13365 transitions. [2021-11-06 13:50:02,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:02,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-06 13:50:02,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:02,130 INFO L225 Difference]: With dead ends: 9163 [2021-11-06 13:50:02,130 INFO L226 Difference]: Without dead ends: 4601 [2021-11-06 13:50:02,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:02,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-11-06 13:50:02,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4579. [2021-11-06 13:50:02,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4547 states have (on average 1.4587640202331207) internal successors, (6633), 4549 states have internal predecessors, (6633), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-06 13:50:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6669 transitions. [2021-11-06 13:50:02,269 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6669 transitions. Word has length 136 [2021-11-06 13:50:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:02,270 INFO L470 AbstractCegarLoop]: Abstraction has 4579 states and 6669 transitions. [2021-11-06 13:50:02,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:02,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6669 transitions. [2021-11-06 13:50:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-06 13:50:02,278 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:02,278 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:02,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-06 13:50:02,279 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:02,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:02,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1424408872, now seen corresponding path program 1 times [2021-11-06 13:50:02,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:02,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434235704] [2021-11-06 13:50:02,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:02,280 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:02,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:02,472 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 13:50:02,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:02,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434235704] [2021-11-06 13:50:02,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434235704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:02,473 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:02,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:50:02,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468444968] [2021-11-06 13:50:02,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:50:02,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:02,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:50:02,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:02,475 INFO L87 Difference]: Start difference. First operand 4579 states and 6669 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:02,647 INFO L93 Difference]: Finished difference Result 9451 states and 13761 transitions. [2021-11-06 13:50:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:50:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-06 13:50:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:02,660 INFO L225 Difference]: With dead ends: 9451 [2021-11-06 13:50:02,660 INFO L226 Difference]: Without dead ends: 4875 [2021-11-06 13:50:02,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2021-11-06 13:50:02,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4587. [2021-11-06 13:50:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4555 states have (on average 1.4579582875960484) internal successors, (6641), 4557 states have internal predecessors, (6641), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-06 13:50:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6677 transitions. [2021-11-06 13:50:02,884 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6677 transitions. Word has length 143 [2021-11-06 13:50:02,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:02,884 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 6677 transitions. [2021-11-06 13:50:02,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:02,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6677 transitions. [2021-11-06 13:50:02,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-06 13:50:02,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:02,892 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:02,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-06 13:50:02,892 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:02,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:02,893 INFO L85 PathProgramCache]: Analyzing trace with hash 499833131, now seen corresponding path program 1 times [2021-11-06 13:50:02,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:02,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056389954] [2021-11-06 13:50:02,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:02,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:02,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:03,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 13:50:03,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:03,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056389954] [2021-11-06 13:50:03,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056389954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:03,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:03,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:03,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638914341] [2021-11-06 13:50:03,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:03,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:03,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:03,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:03,079 INFO L87 Difference]: Start difference. First operand 4587 states and 6677 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:03,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:03,254 INFO L93 Difference]: Finished difference Result 9215 states and 13417 transitions. [2021-11-06 13:50:03,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:03,255 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-06 13:50:03,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:03,267 INFO L225 Difference]: With dead ends: 9215 [2021-11-06 13:50:03,267 INFO L226 Difference]: Without dead ends: 4631 [2021-11-06 13:50:03,279 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2021-11-06 13:50:03,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4599. [2021-11-06 13:50:03,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4567 states have (on average 1.45675498138822) internal successors, (6653), 4569 states have internal predecessors, (6653), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-06 13:50:03,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6689 transitions. [2021-11-06 13:50:03,417 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6689 transitions. Word has length 148 [2021-11-06 13:50:03,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:03,418 INFO L470 AbstractCegarLoop]: Abstraction has 4599 states and 6689 transitions. [2021-11-06 13:50:03,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:03,418 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6689 transitions. [2021-11-06 13:50:03,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-06 13:50:03,426 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:03,426 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:50:03,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-06 13:50:03,427 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:03,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1960295004, now seen corresponding path program 1 times [2021-11-06 13:50:03,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:03,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761879285] [2021-11-06 13:50:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:03,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:03,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:03,637 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-06 13:50:03,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:03,637 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761879285] [2021-11-06 13:50:03,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761879285] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:03,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266782764] [2021-11-06 13:50:03,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:03,638 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:50:03,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:50:03,640 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:50:03,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 13:50:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:04,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 3411 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 13:50:04,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:50:04,938 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-06 13:50:04,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266782764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:04,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 13:50:04,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-06 13:50:04,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141678778] [2021-11-06 13:50:04,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:50:04,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:04,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:50:04,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:04,942 INFO L87 Difference]: Start difference. First operand 4599 states and 6689 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:07,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:07,203 INFO L93 Difference]: Finished difference Result 5559 states and 7982 transitions. [2021-11-06 13:50:07,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:50:07,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-06 13:50:07,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:07,215 INFO L225 Difference]: With dead ends: 5559 [2021-11-06 13:50:07,215 INFO L226 Difference]: Without dead ends: 4586 [2021-11-06 13:50:07,219 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:07,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-06 13:50:07,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4564. [2021-11-06 13:50:07,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4538 states have (on average 1.4585720581754076) internal successors, (6619), 4538 states have internal predecessors, (6619), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:07,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6644 transitions. [2021-11-06 13:50:07,357 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6644 transitions. Word has length 152 [2021-11-06 13:50:07,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:07,358 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 6644 transitions. [2021-11-06 13:50:07,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:07,358 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6644 transitions. [2021-11-06 13:50:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-06 13:50:07,370 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:07,370 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:07,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 13:50:07,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-06 13:50:07,588 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash -2115324467, now seen corresponding path program 1 times [2021-11-06 13:50:07,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:07,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818491518] [2021-11-06 13:50:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:07,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 13:50:07,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:07,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818491518] [2021-11-06 13:50:07,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818491518] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:07,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044057786] [2021-11-06 13:50:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:07,839 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:50:07,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:50:07,840 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:50:07,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 13:50:09,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:09,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 5048 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 13:50:09,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:50:09,775 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-06 13:50:09,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044057786] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:09,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 13:50:09,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-11-06 13:50:09,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691224068] [2021-11-06 13:50:09,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:50:09,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:09,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:50:09,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:09,777 INFO L87 Difference]: Start difference. First operand 4564 states and 6644 transitions. Second operand has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:09,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:09,971 INFO L93 Difference]: Finished difference Result 9709 states and 14095 transitions. [2021-11-06 13:50:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:09,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-11-06 13:50:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:09,984 INFO L225 Difference]: With dead ends: 9709 [2021-11-06 13:50:09,984 INFO L226 Difference]: Without dead ends: 5148 [2021-11-06 13:50:09,993 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:09,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2021-11-06 13:50:10,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 4860. [2021-11-06 13:50:10,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4860 states, 4834 states have (on average 1.4520066197765826) internal successors, (7019), 4834 states have internal predecessors, (7019), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:10,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 7044 transitions. [2021-11-06 13:50:10,260 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 7044 transitions. Word has length 264 [2021-11-06 13:50:10,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:10,261 INFO L470 AbstractCegarLoop]: Abstraction has 4860 states and 7044 transitions. [2021-11-06 13:50:10,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.2) internal successors, (206), 5 states have internal predecessors, (206), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:10,261 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 7044 transitions. [2021-11-06 13:50:10,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2021-11-06 13:50:10,273 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:10,274 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:10,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 13:50:10,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-06 13:50:10,488 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:10,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:10,488 INFO L85 PathProgramCache]: Analyzing trace with hash -279795631, now seen corresponding path program 2 times [2021-11-06 13:50:10,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:10,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661026175] [2021-11-06 13:50:10,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:10,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-06 13:50:10,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:10,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661026175] [2021-11-06 13:50:10,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661026175] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:10,776 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:10,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 13:50:10,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860025799] [2021-11-06 13:50:10,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:50:10,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:10,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:50:10,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:10,778 INFO L87 Difference]: Start difference. First operand 4860 states and 7044 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:11,571 INFO L93 Difference]: Finished difference Result 10705 states and 15412 transitions. [2021-11-06 13:50:11,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:11,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 274 [2021-11-06 13:50:11,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:11,588 INFO L225 Difference]: With dead ends: 10705 [2021-11-06 13:50:11,588 INFO L226 Difference]: Without dead ends: 5848 [2021-11-06 13:50:11,600 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 13:50:11,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5848 states. [2021-11-06 13:50:11,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5848 to 4900. [2021-11-06 13:50:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4900 states, 4874 states have (on average 1.448297086581863) internal successors, (7059), 4874 states have internal predecessors, (7059), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:11,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4900 states to 4900 states and 7084 transitions. [2021-11-06 13:50:11,770 INFO L78 Accepts]: Start accepts. Automaton has 4900 states and 7084 transitions. Word has length 274 [2021-11-06 13:50:11,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:11,770 INFO L470 AbstractCegarLoop]: Abstraction has 4900 states and 7084 transitions. [2021-11-06 13:50:11,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:11,771 INFO L276 IsEmpty]: Start isEmpty. Operand 4900 states and 7084 transitions. [2021-11-06 13:50:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-06 13:50:11,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:11,782 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:11,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-06 13:50:11,783 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1237061453, now seen corresponding path program 1 times [2021-11-06 13:50:11,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:11,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289222800] [2021-11-06 13:50:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:11,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:12,060 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-06 13:50:12,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:12,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289222800] [2021-11-06 13:50:12,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289222800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:12,061 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:12,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 13:50:12,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353745466] [2021-11-06 13:50:12,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:50:12,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:12,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:50:12,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:12,063 INFO L87 Difference]: Start difference. First operand 4900 states and 7084 transitions. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:12,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:12,847 INFO L93 Difference]: Finished difference Result 10849 states and 15571 transitions. [2021-11-06 13:50:12,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:12,848 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2021-11-06 13:50:12,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:12,864 INFO L225 Difference]: With dead ends: 10849 [2021-11-06 13:50:12,865 INFO L226 Difference]: Without dead ends: 5952 [2021-11-06 13:50:12,875 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 13:50:12,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5952 states. [2021-11-06 13:50:13,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5952 to 4924. [2021-11-06 13:50:13,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4924 states, 4898 states have (on average 1.4461004491629237) internal successors, (7083), 4898 states have internal predecessors, (7083), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4924 states to 4924 states and 7108 transitions. [2021-11-06 13:50:13,035 INFO L78 Accepts]: Start accepts. Automaton has 4924 states and 7108 transitions. Word has length 296 [2021-11-06 13:50:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:13,036 INFO L470 AbstractCegarLoop]: Abstraction has 4924 states and 7108 transitions. [2021-11-06 13:50:13,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:13,036 INFO L276 IsEmpty]: Start isEmpty. Operand 4924 states and 7108 transitions. [2021-11-06 13:50:13,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-06 13:50:13,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:13,048 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:13,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-06 13:50:13,049 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:13,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:13,049 INFO L85 PathProgramCache]: Analyzing trace with hash -2028484339, now seen corresponding path program 1 times [2021-11-06 13:50:13,049 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:13,050 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257244801] [2021-11-06 13:50:13,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:13,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:13,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-11-06 13:50:13,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:13,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257244801] [2021-11-06 13:50:13,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257244801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:13,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:13,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 13:50:13,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394379693] [2021-11-06 13:50:13,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:50:13,326 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:13,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:50:13,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:13,327 INFO L87 Difference]: Start difference. First operand 4924 states and 7108 transitions. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:14,165 INFO L93 Difference]: Finished difference Result 11089 states and 15882 transitions. [2021-11-06 13:50:14,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2021-11-06 13:50:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:14,181 INFO L225 Difference]: With dead ends: 11089 [2021-11-06 13:50:14,182 INFO L226 Difference]: Without dead ends: 6168 [2021-11-06 13:50:14,192 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 13:50:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2021-11-06 13:50:14,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 4948. [2021-11-06 13:50:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4948 states, 4922 states have (on average 1.4439252336448598) internal successors, (7107), 4922 states have internal predecessors, (7107), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:14,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 7132 transitions. [2021-11-06 13:50:14,465 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 7132 transitions. Word has length 296 [2021-11-06 13:50:14,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:14,465 INFO L470 AbstractCegarLoop]: Abstraction has 4948 states and 7132 transitions. [2021-11-06 13:50:14,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 7132 transitions. [2021-11-06 13:50:14,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-06 13:50:14,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:14,477 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:14,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-06 13:50:14,478 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:14,479 INFO L85 PathProgramCache]: Analyzing trace with hash -80620851, now seen corresponding path program 1 times [2021-11-06 13:50:14,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:14,479 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806488479] [2021-11-06 13:50:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:14,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:14,751 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-06 13:50:14,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:14,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806488479] [2021-11-06 13:50:14,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806488479] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:14,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:14,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-06 13:50:14,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989895034] [2021-11-06 13:50:14,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:50:14,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:14,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:50:14,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:14,754 INFO L87 Difference]: Start difference. First operand 4948 states and 7132 transitions. Second operand has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:15,580 INFO L93 Difference]: Finished difference Result 11069 states and 15834 transitions. [2021-11-06 13:50:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2021-11-06 13:50:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:15,600 INFO L225 Difference]: With dead ends: 11069 [2021-11-06 13:50:15,600 INFO L226 Difference]: Without dead ends: 6124 [2021-11-06 13:50:15,611 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-06 13:50:15,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-11-06 13:50:15,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 4972. [2021-11-06 13:50:15,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4972 states, 4946 states have (on average 1.4417711281843915) internal successors, (7131), 4946 states have internal predecessors, (7131), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:15,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4972 states to 4972 states and 7156 transitions. [2021-11-06 13:50:15,779 INFO L78 Accepts]: Start accepts. Automaton has 4972 states and 7156 transitions. Word has length 296 [2021-11-06 13:50:15,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:15,779 INFO L470 AbstractCegarLoop]: Abstraction has 4972 states and 7156 transitions. [2021-11-06 13:50:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 4972 states and 7156 transitions. [2021-11-06 13:50:15,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2021-11-06 13:50:15,792 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:15,792 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:15,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-06 13:50:15,792 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:15,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:15,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1981239027, now seen corresponding path program 1 times [2021-11-06 13:50:15,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:15,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086364334] [2021-11-06 13:50:15,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:15,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:15,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:16,051 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-11-06 13:50:16,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:16,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086364334] [2021-11-06 13:50:16,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086364334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:16,053 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:16,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:16,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022696288] [2021-11-06 13:50:16,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:16,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:16,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:16,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:16,055 INFO L87 Difference]: Start difference. First operand 4972 states and 7156 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:16,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:16,354 INFO L93 Difference]: Finished difference Result 10029 states and 14436 transitions. [2021-11-06 13:50:16,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:16,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 296 [2021-11-06 13:50:16,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:16,369 INFO L225 Difference]: With dead ends: 10029 [2021-11-06 13:50:16,369 INFO L226 Difference]: Without dead ends: 5060 [2021-11-06 13:50:16,378 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:16,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5060 states. [2021-11-06 13:50:16,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5060 to 4980. [2021-11-06 13:50:16,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4980 states, 4954 states have (on average 1.4410577311263626) internal successors, (7139), 4954 states have internal predecessors, (7139), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:16,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4980 states to 4980 states and 7164 transitions. [2021-11-06 13:50:16,536 INFO L78 Accepts]: Start accepts. Automaton has 4980 states and 7164 transitions. Word has length 296 [2021-11-06 13:50:16,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:16,536 INFO L470 AbstractCegarLoop]: Abstraction has 4980 states and 7164 transitions. [2021-11-06 13:50:16,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:16,537 INFO L276 IsEmpty]: Start isEmpty. Operand 4980 states and 7164 transitions. [2021-11-06 13:50:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2021-11-06 13:50:16,554 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:16,555 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:16,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-06 13:50:16,555 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:16,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2147047495, now seen corresponding path program 1 times [2021-11-06 13:50:16,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:16,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926410517] [2021-11-06 13:50:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:16,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:16,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-06 13:50:16,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:16,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926410517] [2021-11-06 13:50:16,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926410517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:16,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:16,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-06 13:50:16,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717826000] [2021-11-06 13:50:16,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-06 13:50:16,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:16,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-06 13:50:16,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-06 13:50:16,839 INFO L87 Difference]: Start difference. First operand 4980 states and 7164 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:17,010 INFO L93 Difference]: Finished difference Result 9981 states and 14365 transitions. [2021-11-06 13:50:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-06 13:50:17,015 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 318 [2021-11-06 13:50:17,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:17,027 INFO L225 Difference]: With dead ends: 9981 [2021-11-06 13:50:17,028 INFO L226 Difference]: Without dead ends: 5004 [2021-11-06 13:50:17,035 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:17,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5004 states. [2021-11-06 13:50:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5004 to 4988. [2021-11-06 13:50:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4988 states, 4962 states have (on average 1.4403466344216043) internal successors, (7147), 4962 states have internal predecessors, (7147), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4988 states to 4988 states and 7172 transitions. [2021-11-06 13:50:17,193 INFO L78 Accepts]: Start accepts. Automaton has 4988 states and 7172 transitions. Word has length 318 [2021-11-06 13:50:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:17,194 INFO L470 AbstractCegarLoop]: Abstraction has 4988 states and 7172 transitions. [2021-11-06 13:50:17,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:17,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4988 states and 7172 transitions. [2021-11-06 13:50:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2021-11-06 13:50:17,206 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:17,207 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:17,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-06 13:50:17,207 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:17,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1979754035, now seen corresponding path program 1 times [2021-11-06 13:50:17,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:17,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581129216] [2021-11-06 13:50:17,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:17,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:17,835 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-06 13:50:17,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:17,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581129216] [2021-11-06 13:50:17,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581129216] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:17,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206064884] [2021-11-06 13:50:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:17,836 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:50:17,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:50:17,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:50:17,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 13:50:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:19,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 6328 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-06 13:50:19,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:50:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-11-06 13:50:19,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206064884] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:19,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-06 13:50:19,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-11-06 13:50:19,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699103890] [2021-11-06 13:50:19,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-06 13:50:19,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:19,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-06 13:50:19,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:19,913 INFO L87 Difference]: Start difference. First operand 4988 states and 7172 transitions. Second operand has 6 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:20,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:20,135 INFO L93 Difference]: Finished difference Result 10277 states and 14767 transitions. [2021-11-06 13:50:20,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:50:20,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 340 [2021-11-06 13:50:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:20,150 INFO L225 Difference]: With dead ends: 10277 [2021-11-06 13:50:20,150 INFO L226 Difference]: Without dead ends: 5292 [2021-11-06 13:50:20,157 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-06 13:50:20,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2021-11-06 13:50:20,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5292. [2021-11-06 13:50:20,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5266 states have (on average 1.4346752753513103) internal successors, (7555), 5266 states have internal predecessors, (7555), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7580 transitions. [2021-11-06 13:50:20,321 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7580 transitions. Word has length 340 [2021-11-06 13:50:20,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:20,322 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 7580 transitions. [2021-11-06 13:50:20,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.666666666666664) internal successors, (244), 6 states have internal predecessors, (244), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:20,322 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7580 transitions. [2021-11-06 13:50:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-06 13:50:20,330 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:20,330 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:20,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-06 13:50:20,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:50:20,544 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:20,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:20,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1711241477, now seen corresponding path program 2 times [2021-11-06 13:50:20,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:20,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556123485] [2021-11-06 13:50:20,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:20,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-06 13:50:21,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:21,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556123485] [2021-11-06 13:50:21,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556123485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:21,244 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:21,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-06 13:50:21,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939515767] [2021-11-06 13:50:21,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-06 13:50:21,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:21,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-06 13:50:21,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:50:21,246 INFO L87 Difference]: Start difference. First operand 5292 states and 7580 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:21,948 INFO L93 Difference]: Finished difference Result 14181 states and 20009 transitions. [2021-11-06 13:50:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:21,949 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2021-11-06 13:50:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:21,981 INFO L225 Difference]: With dead ends: 14181 [2021-11-06 13:50:21,981 INFO L226 Difference]: Without dead ends: 8892 [2021-11-06 13:50:21,994 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-06 13:50:22,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2021-11-06 13:50:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 5312. [2021-11-06 13:50:22,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5286 states have (on average 1.4330306469920544) internal successors, (7575), 5286 states have internal predecessors, (7575), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:22,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 7600 transitions. [2021-11-06 13:50:22,242 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 7600 transitions. Word has length 350 [2021-11-06 13:50:22,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:22,242 INFO L470 AbstractCegarLoop]: Abstraction has 5312 states and 7600 transitions. [2021-11-06 13:50:22,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:22,243 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 7600 transitions. [2021-11-06 13:50:22,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-06 13:50:22,251 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:22,251 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:22,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-06 13:50:22,252 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:22,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:22,252 INFO L85 PathProgramCache]: Analyzing trace with hash -35189235, now seen corresponding path program 1 times [2021-11-06 13:50:22,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:22,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956607941] [2021-11-06 13:50:22,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:22,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:22,869 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-06 13:50:22,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:22,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956607941] [2021-11-06 13:50:22,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956607941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:22,870 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:22,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 13:50:22,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979781643] [2021-11-06 13:50:22,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:50:22,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:50:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:22,872 INFO L87 Difference]: Start difference. First operand 5312 states and 7600 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:23,278 INFO L93 Difference]: Finished difference Result 11937 states and 16957 transitions. [2021-11-06 13:50:23,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:50:23,279 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-11-06 13:50:23,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:23,298 INFO L225 Difference]: With dead ends: 11937 [2021-11-06 13:50:23,298 INFO L226 Difference]: Without dead ends: 6628 [2021-11-06 13:50:23,308 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:50:23,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-11-06 13:50:23,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5324. [2021-11-06 13:50:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5324 states, 5298 states have (on average 1.4320498301245752) internal successors, (7587), 5298 states have internal predecessors, (7587), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 7612 transitions. [2021-11-06 13:50:23,538 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 7612 transitions. Word has length 356 [2021-11-06 13:50:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:23,538 INFO L470 AbstractCegarLoop]: Abstraction has 5324 states and 7612 transitions. [2021-11-06 13:50:23,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 7612 transitions. [2021-11-06 13:50:23,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-06 13:50:23,551 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:23,552 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:23,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-06 13:50:23,553 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:23,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:23,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1969471175, now seen corresponding path program 1 times [2021-11-06 13:50:23,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:23,553 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15714713] [2021-11-06 13:50:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:23,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:24,036 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-06 13:50:24,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:24,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15714713] [2021-11-06 13:50:24,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15714713] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:24,037 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:24,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-06 13:50:24,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379726200] [2021-11-06 13:50:24,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:50:24,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:24,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:50:24,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-06 13:50:24,039 INFO L87 Difference]: Start difference. First operand 5324 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:24,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:24,436 INFO L93 Difference]: Finished difference Result 11941 states and 16953 transitions. [2021-11-06 13:50:24,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-06 13:50:24,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2021-11-06 13:50:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:24,452 INFO L225 Difference]: With dead ends: 11941 [2021-11-06 13:50:24,452 INFO L226 Difference]: Without dead ends: 6620 [2021-11-06 13:50:24,463 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:50:24,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2021-11-06 13:50:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 5348. [2021-11-06 13:50:24,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 5322 states have (on average 1.4301014656144306) internal successors, (7611), 5322 states have internal predecessors, (7611), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:24,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7636 transitions. [2021-11-06 13:50:24,692 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7636 transitions. Word has length 362 [2021-11-06 13:50:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:24,692 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 7636 transitions. [2021-11-06 13:50:24,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:24,693 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7636 transitions. [2021-11-06 13:50:24,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-06 13:50:24,701 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:24,702 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:24,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-06 13:50:24,702 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:24,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:24,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1736848629, now seen corresponding path program 1 times [2021-11-06 13:50:24,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:24,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673526506] [2021-11-06 13:50:24,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:24,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-06 13:50:25,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:25,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673526506] [2021-11-06 13:50:25,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673526506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:25,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:25,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-06 13:50:25,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219425920] [2021-11-06 13:50:25,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-06 13:50:25,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-06 13:50:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-06 13:50:25,418 INFO L87 Difference]: Start difference. First operand 5348 states and 7636 transitions. Second operand has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:26,024 INFO L93 Difference]: Finished difference Result 11917 states and 16905 transitions. [2021-11-06 13:50:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:26,024 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-06 13:50:26,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:26,040 INFO L225 Difference]: With dead ends: 11917 [2021-11-06 13:50:26,042 INFO L226 Difference]: Without dead ends: 6572 [2021-11-06 13:50:26,052 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-06 13:50:26,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-11-06 13:50:26,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5372. [2021-11-06 13:50:26,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5346 states have (on average 1.4281705948372616) internal successors, (7635), 5346 states have internal predecessors, (7635), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:26,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7660 transitions. [2021-11-06 13:50:26,304 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7660 transitions. Word has length 374 [2021-11-06 13:50:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:26,304 INFO L470 AbstractCegarLoop]: Abstraction has 5372 states and 7660 transitions. [2021-11-06 13:50:26,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:26,304 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7660 transitions. [2021-11-06 13:50:26,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-06 13:50:26,313 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:26,313 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:26,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-06 13:50:26,313 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:26,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:26,314 INFO L85 PathProgramCache]: Analyzing trace with hash -2037898323, now seen corresponding path program 1 times [2021-11-06 13:50:26,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:26,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954826160] [2021-11-06 13:50:26,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:26,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-06 13:50:39,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:39,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954826160] [2021-11-06 13:50:39,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954826160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:39,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:50:39,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:50:39,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977256483] [2021-11-06 13:50:39,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:50:39,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:39,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:50:39,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:39,208 INFO L87 Difference]: Start difference. First operand 5372 states and 7660 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:39,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:39,418 INFO L93 Difference]: Finished difference Result 10745 states and 15337 transitions. [2021-11-06 13:50:39,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:50:39,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2021-11-06 13:50:39,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:39,431 INFO L225 Difference]: With dead ends: 10745 [2021-11-06 13:50:39,431 INFO L226 Difference]: Without dead ends: 5376 [2021-11-06 13:50:39,439 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:50:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-11-06 13:50:39,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5376. [2021-11-06 13:50:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:39,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-06 13:50:39,668 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 380 [2021-11-06 13:50:39,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:39,669 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-06 13:50:39,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:39,669 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-06 13:50:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-06 13:50:39,677 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:39,677 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:39,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-06 13:50:39,678 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:39,678 INFO L85 PathProgramCache]: Analyzing trace with hash 953417825, now seen corresponding path program 1 times [2021-11-06 13:50:39,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:39,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751516779] [2021-11-06 13:50:39,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:39,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:50:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-06 13:50:52,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:50:52,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751516779] [2021-11-06 13:50:52,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751516779] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:50:52,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157508937] [2021-11-06 13:50:52,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:52,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:50:52,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:50:52,900 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:50:52,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 13:50:54,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:50:54,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 6656 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 13:50:54,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:50:55,235 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-06 13:50:55,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157508937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:50:55,236 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 13:50:55,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 13:50:55,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317701898] [2021-11-06 13:50:55,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:50:55,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:50:55,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:50:55,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:50:55,238 INFO L87 Difference]: Start difference. First operand 5376 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:55,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:50:55,552 INFO L93 Difference]: Finished difference Result 10797 states and 15387 transitions. [2021-11-06 13:50:55,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:50:55,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-06 13:50:55,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:50:55,565 INFO L225 Difference]: With dead ends: 10797 [2021-11-06 13:50:55,565 INFO L226 Difference]: Without dead ends: 5424 [2021-11-06 13:50:55,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-06 13:50:55,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2021-11-06 13:50:55,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 5376. [2021-11-06 13:50:55,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:50:55,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-06 13:50:55,805 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 382 [2021-11-06 13:50:55,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:50:55,806 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-06 13:50:55,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:50:55,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-06 13:50:55,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-06 13:50:55,814 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:50:55,814 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:50:55,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-06 13:50:56,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-06 13:50:56,034 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:50:56,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:50:56,034 INFO L85 PathProgramCache]: Analyzing trace with hash 316017815, now seen corresponding path program 1 times [2021-11-06 13:50:56,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:50:56,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348649233] [2021-11-06 13:50:56,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:50:56,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:51:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:51:20,485 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-06 13:51:20,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:51:20,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348649233] [2021-11-06 13:51:20,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348649233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:51:20,486 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019413788] [2021-11-06 13:51:20,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:51:20,487 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:51:20,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:51:20,488 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:51:20,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 13:51:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:51:21,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-06 13:51:21,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 13:51:22,725 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-06 13:51:22,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2019413788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:51:22,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-06 13:51:22,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-06 13:51:22,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90159844] [2021-11-06 13:51:22,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-06 13:51:22,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:51:22,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-06 13:51:22,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-06 13:51:22,727 INFO L87 Difference]: Start difference. First operand 5376 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:51:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:51:22,976 INFO L93 Difference]: Finished difference Result 10837 states and 15427 transitions. [2021-11-06 13:51:22,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-06 13:51:22,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-06 13:51:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:51:22,989 INFO L225 Difference]: With dead ends: 10837 [2021-11-06 13:51:22,989 INFO L226 Difference]: Without dead ends: 5464 [2021-11-06 13:51:23,001 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-06 13:51:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-06 13:51:23,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 5376. [2021-11-06 13:51:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-06 13:51:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-06 13:51:23,308 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 382 [2021-11-06 13:51:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:51:23,309 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-06 13:51:23,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:51:23,309 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-06 13:51:23,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-06 13:51:23,315 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:51:23,316 INFO L513 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-06 13:51:23,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 13:51:23,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-11-06 13:51:23,532 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-06 13:51:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:51:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1626357407, now seen corresponding path program 1 times [2021-11-06 13:51:23,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:51:23,533 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890620172] [2021-11-06 13:51:23,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:51:23,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:51:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:51:46,277 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-06 13:51:46,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:51:46,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890620172] [2021-11-06 13:51:46,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890620172] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-06 13:51:46,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698104616] [2021-11-06 13:51:46,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:51:46,278 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 13:51:46,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:51:46,279 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 13:51:46,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process Killed by 15