./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 fcb8e130 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-fcb8e13 [2021-11-22 22:36:41,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 22:36:41,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 22:36:41,433 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 22:36:41,433 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 22:36:41,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 22:36:41,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 22:36:41,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 22:36:41,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 22:36:41,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 22:36:41,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 22:36:41,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 22:36:41,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 22:36:41,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 22:36:41,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 22:36:41,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 22:36:41,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 22:36:41,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 22:36:41,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 22:36:41,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 22:36:41,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 22:36:41,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 22:36:41,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 22:36:41,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 22:36:41,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 22:36:41,465 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 22:36:41,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 22:36:41,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 22:36:41,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 22:36:41,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 22:36:41,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 22:36:41,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 22:36:41,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 22:36:41,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 22:36:41,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 22:36:41,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 22:36:41,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 22:36:41,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 22:36:41,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 22:36:41,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 22:36:41,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 22:36:41,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 22:36:41,507 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 22:36:41,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 22:36:41,508 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 22:36:41,508 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 22:36:41,509 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 22:36:41,509 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 22:36:41,509 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 22:36:41,510 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 22:36:41,510 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 22:36:41,510 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 22:36:41,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 22:36:41,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 22:36:41,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 22:36:41,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 22:36:41,511 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 22:36:41,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 22:36:41,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 22:36:41,512 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 22:36:41,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 22:36:41,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:36:41,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 22:36:41,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 22:36:41,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 22:36:41,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 22:36:41,514 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-11-22 22:36:41,676 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 22:36:41,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 22:36:41,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 22:36:41,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 22:36:41,709 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 22:36:41,710 INFO L432 ainManager$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 [2021-11-22 22:36:41,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8366b465f/bbcc9cc3690e45729d0083690cd3ffef/FLAG27b4b2cbb [2021-11-22 22:36:42,292 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 22:36:42,292 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 [2021-11-22 22:36:42,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8366b465f/bbcc9cc3690e45729d0083690cd3ffef/FLAG27b4b2cbb [2021-11-22 22:36:42,735 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8366b465f/bbcc9cc3690e45729d0083690cd3ffef [2021-11-22 22:36:42,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 22:36:42,738 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 22:36:42,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 22:36:42,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 22:36:42,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 22:36:42,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:36:42" (1/1) ... [2021-11-22 22:36:42,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5899f95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:42, skipping insertion in model container [2021-11-22 22:36:42,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 10:36:42" (1/1) ... [2021-11-22 22:36:42,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 22:36:42,821 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 22:36:43,519 WARN L230 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] [2021-11-22 22:36:43,574 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:36:43,593 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 22:36:43,750 WARN L230 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] [2021-11-22 22:36:43,776 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 22:36:43,838 INFO L208 MainTranslator]: Completed translation [2021-11-22 22:36:43,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43 WrapperNode [2021-11-22 22:36:43,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 22:36:43,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 22:36:43,841 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 22:36:43,841 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 22:36:43,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:43,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,108 INFO L137 Inliner]: procedures = 196, calls = 979, calls flagged for inlining = 251, calls inlined = 633, statements flattened = 12830 [2021-11-22 22:36:44,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 22:36:44,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 22:36:44,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 22:36:44,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 22:36:44,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 22:36:44,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 22:36:44,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 22:36:44,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 22:36:44,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (1/1) ... [2021-11-22 22:36:44,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 22:36:44,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:36:44,434 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) [2021-11-22 22:36:44,444 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 [2021-11-22 22:36:44,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 22:36:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 22:36:44,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2021-11-22 22:36:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 22:36:44,467 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2021-11-22 22:36:44,467 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2021-11-22 22:36:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 22:36:44,468 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:36:44,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-22 22:36:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 22:36:44,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 22:36:44,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 22:36:45,059 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 22:36:45,060 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 22:36:56,426 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 22:36:56,445 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 22:36:56,446 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 22:36:56,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:36:56 BoogieIcfgContainer [2021-11-22 22:36:56,449 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 22:36:56,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 22:36:56,450 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 22:36:56,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 22:36:56,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 10:36:42" (1/3) ... [2021-11-22 22:36:56,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d818223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:36:56, skipping insertion in model container [2021-11-22 22:36:56,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 10:36:43" (2/3) ... [2021-11-22 22:36:56,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d818223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 10:36:56, skipping insertion in model container [2021-11-22 22:36:56,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 10:36:56" (3/3) ... [2021-11-22 22:36:56,454 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-22 22:36:56,458 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 22:36:56,458 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-22 22:36:56,502 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 22:36:56,508 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 [2021-11-22 22:36:56,509 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-22 22:36:56,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 1549 states, 1532 states have (on average 1.4516971279373367) internal successors, (2224), 1539 states have internal predecessors, (2224), 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) [2021-11-22 22:36:56,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-22 22:36:56,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:36:56,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:36:56,565 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)] === [2021-11-22 22:36:56,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:36:56,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1514290535, now seen corresponding path program 1 times [2021-11-22 22:36:56,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:36:56,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723191668] [2021-11-22 22:36:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:36:56,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:36:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:36:56,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:36:56,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:36:56,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723191668] [2021-11-22 22:36:56,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723191668] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:36:56,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:36:56,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:36:56,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32202006] [2021-11-22 22:36:56,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:36:56,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:36:56,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:36:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:36:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:36:57,014 INFO L87 Difference]: Start difference. First operand has 1549 states, 1532 states have (on average 1.4516971279373367) internal successors, (2224), 1539 states have internal predecessors, (2224), 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 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-22 22:36:59,050 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:36:59,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:36:59,204 INFO L93 Difference]: Finished difference Result 4602 states and 6662 transitions. [2021-11-22 22:36:59,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:36:59,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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 21 [2021-11-22 22:36:59,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:36:59,223 INFO L225 Difference]: With dead ends: 4602 [2021-11-22 22:36:59,223 INFO L226 Difference]: Without dead ends: 3052 [2021-11-22 22:36:59,231 INFO L932 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 [2021-11-22 22:36:59,233 INFO L933 BasicCegarLoop]: 2202 mSDtfsCounter, 2157 mSDsluCounter, 2184 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 4386 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:36:59,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2157 Valid, 4386 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 22:36:59,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3052 states. [2021-11-22 22:36:59,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3052 to 3048. [2021-11-22 22:36:59,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3023 states have (on average 1.435329143235197) internal successors, (4339), 3029 states have internal predecessors, (4339), 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) [2021-11-22 22:36:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4359 transitions. [2021-11-22 22:36:59,349 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4359 transitions. Word has length 21 [2021-11-22 22:36:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:36:59,349 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 4359 transitions. [2021-11-22 22:36:59,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 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) [2021-11-22 22:36:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4359 transitions. [2021-11-22 22:36:59,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 22:36:59,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:36:59,352 INFO L514 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] [2021-11-22 22:36:59,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 22:36:59,352 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)] === [2021-11-22 22:36:59,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:36:59,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1908289567, now seen corresponding path program 1 times [2021-11-22 22:36:59,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:36:59,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466361101] [2021-11-22 22:36:59,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:36:59,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:36:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:36:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:36:59,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:36:59,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466361101] [2021-11-22 22:36:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466361101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:36:59,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:36:59,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:36:59,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573287244] [2021-11-22 22:36:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:36:59,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:36:59,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:36:59,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:36:59,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:36:59,458 INFO L87 Difference]: Start difference. First operand 3048 states and 4359 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) [2021-11-22 22:36:59,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:36:59,543 INFO L93 Difference]: Finished difference Result 3080 states and 4389 transitions. [2021-11-22 22:36:59,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:36:59,544 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 [2021-11-22 22:36:59,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:36:59,555 INFO L225 Difference]: With dead ends: 3080 [2021-11-22 22:36:59,556 INFO L226 Difference]: Without dead ends: 3064 [2021-11-22 22:36:59,558 INFO L932 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 [2021-11-22 22:36:59,562 INFO L933 BasicCegarLoop]: 2208 mSDtfsCounter, 2189 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:36:59,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2189 Valid, 2223 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:36:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2021-11-22 22:36:59,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3048. [2021-11-22 22:36:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3048 states, 3023 states have (on average 1.4349983460138935) internal successors, (4338), 3029 states have internal predecessors, (4338), 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) [2021-11-22 22:36:59,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3048 states to 3048 states and 4358 transitions. [2021-11-22 22:36:59,718 INFO L78 Accepts]: Start accepts. Automaton has 3048 states and 4358 transitions. Word has length 24 [2021-11-22 22:36:59,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:36:59,718 INFO L470 AbstractCegarLoop]: Abstraction has 3048 states and 4358 transitions. [2021-11-22 22:36:59,723 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) [2021-11-22 22:36:59,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3048 states and 4358 transitions. [2021-11-22 22:36:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-22 22:36:59,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:36:59,724 INFO L514 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] [2021-11-22 22:36:59,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 22:36:59,725 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)] === [2021-11-22 22:36:59,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:36:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1906442525, now seen corresponding path program 1 times [2021-11-22 22:36:59,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:36:59,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296559517] [2021-11-22 22:36:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:36:59,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:36:59,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:36:59,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:36:59,865 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:36:59,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296559517] [2021-11-22 22:36:59,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296559517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:36:59,866 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:36:59,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:36:59,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38135039] [2021-11-22 22:36:59,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:36:59,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:36:59,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:36:59,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:36:59,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:36:59,868 INFO L87 Difference]: Start difference. First operand 3048 states and 4358 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) [2021-11-22 22:37:01,890 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:01,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:01,966 INFO L93 Difference]: Finished difference Result 3048 states and 4358 transitions. [2021-11-22 22:37:01,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:01,966 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 [2021-11-22 22:37:01,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:01,974 INFO L225 Difference]: With dead ends: 3048 [2021-11-22 22:37:01,975 INFO L226 Difference]: Without dead ends: 3046 [2021-11-22 22:37:01,976 INFO L932 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 [2021-11-22 22:37:01,976 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 2170 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2170 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:01,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2170 Valid, 2191 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 22:37:01,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2021-11-22 22:37:02,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 3046. [2021-11-22 22:37:02,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3046 states, 3022 states have (on average 1.4348113831899405) internal successors, (4336), 3027 states have internal predecessors, (4336), 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) [2021-11-22 22:37:02,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3046 states to 3046 states and 4356 transitions. [2021-11-22 22:37:02,042 INFO L78 Accepts]: Start accepts. Automaton has 3046 states and 4356 transitions. Word has length 24 [2021-11-22 22:37:02,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:02,043 INFO L470 AbstractCegarLoop]: Abstraction has 3046 states and 4356 transitions. [2021-11-22 22:37:02,043 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) [2021-11-22 22:37:02,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3046 states and 4356 transitions. [2021-11-22 22:37:02,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 22:37:02,044 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:02,044 INFO L514 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] [2021-11-22 22:37:02,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 22:37:02,045 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)] === [2021-11-22 22:37:02,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:02,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1029826788, now seen corresponding path program 1 times [2021-11-22 22:37:02,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:02,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645777758] [2021-11-22 22:37:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:02,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:02,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:37:02,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:02,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645777758] [2021-11-22 22:37:02,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645777758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:02,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:02,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:02,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582352634] [2021-11-22 22:37:02,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:02,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:02,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:02,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:02,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:02,143 INFO L87 Difference]: Start difference. First operand 3046 states and 4356 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) [2021-11-22 22:37:04,163 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:04,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:04,247 INFO L93 Difference]: Finished difference Result 3046 states and 4356 transitions. [2021-11-22 22:37:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:04,247 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 [2021-11-22 22:37:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:04,256 INFO L225 Difference]: With dead ends: 3046 [2021-11-22 22:37:04,257 INFO L226 Difference]: Without dead ends: 3044 [2021-11-22 22:37:04,258 INFO L932 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 [2021-11-22 22:37:04,259 INFO L933 BasicCegarLoop]: 2189 mSDtfsCounter, 2167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2167 SdHoareTripleChecker+Valid, 2189 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:04,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2167 Valid, 2189 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 22:37:04,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2021-11-22 22:37:04,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 3044. [2021-11-22 22:37:04,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3044 states, 3021 states have (on average 1.434624296590533) internal successors, (4334), 3025 states have internal predecessors, (4334), 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) [2021-11-22 22:37:04,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3044 states to 3044 states and 4354 transitions. [2021-11-22 22:37:04,330 INFO L78 Accepts]: Start accepts. Automaton has 3044 states and 4354 transitions. Word has length 25 [2021-11-22 22:37:04,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:04,330 INFO L470 AbstractCegarLoop]: Abstraction has 3044 states and 4354 transitions. [2021-11-22 22:37:04,330 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) [2021-11-22 22:37:04,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3044 states and 4354 transitions. [2021-11-22 22:37:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-22 22:37:04,332 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:04,332 INFO L514 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] [2021-11-22 22:37:04,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 22:37:04,332 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)] === [2021-11-22 22:37:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1859862286, now seen corresponding path program 1 times [2021-11-22 22:37:04,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:04,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928800711] [2021-11-22 22:37:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:04,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:04,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:37:04,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:04,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928800711] [2021-11-22 22:37:04,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928800711] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:04,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:04,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:04,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510183097] [2021-11-22 22:37:04,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:04,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:04,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:04,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:04,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:04,472 INFO L87 Difference]: Start difference. First operand 3044 states and 4354 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) [2021-11-22 22:37:06,494 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:06,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:06,581 INFO L93 Difference]: Finished difference Result 3044 states and 4354 transitions. [2021-11-22 22:37:06,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:06,582 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 [2021-11-22 22:37:06,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:06,590 INFO L225 Difference]: With dead ends: 3044 [2021-11-22 22:37:06,590 INFO L226 Difference]: Without dead ends: 3042 [2021-11-22 22:37:06,591 INFO L932 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 [2021-11-22 22:37:06,592 INFO L933 BasicCegarLoop]: 2187 mSDtfsCounter, 2164 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2164 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:06,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2164 Valid, 2187 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 22:37:06,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2021-11-22 22:37:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3042. [2021-11-22 22:37:06,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3042 states, 3020 states have (on average 1.4344370860927151) internal successors, (4332), 3023 states have internal predecessors, (4332), 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) [2021-11-22 22:37:06,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3042 states to 3042 states and 4352 transitions. [2021-11-22 22:37:06,664 INFO L78 Accepts]: Start accepts. Automaton has 3042 states and 4352 transitions. Word has length 26 [2021-11-22 22:37:06,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:06,664 INFO L470 AbstractCegarLoop]: Abstraction has 3042 states and 4352 transitions. [2021-11-22 22:37:06,664 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) [2021-11-22 22:37:06,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3042 states and 4352 transitions. [2021-11-22 22:37:06,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-22 22:37:06,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:06,666 INFO L514 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] [2021-11-22 22:37:06,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 22:37:06,666 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)] === [2021-11-22 22:37:06,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:06,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1821158959, now seen corresponding path program 1 times [2021-11-22 22:37:06,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:06,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412733671] [2021-11-22 22:37:06,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:06,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:37:06,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412733671] [2021-11-22 22:37:06,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412733671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:06,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:06,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:06,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192046695] [2021-11-22 22:37:06,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:06,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:06,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:06,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:06,802 INFO L87 Difference]: Start difference. First operand 3042 states and 4352 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) [2021-11-22 22:37:08,826 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:08,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:08,910 INFO L93 Difference]: Finished difference Result 3042 states and 4352 transitions. [2021-11-22 22:37:08,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:08,911 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 [2021-11-22 22:37:08,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:08,919 INFO L225 Difference]: With dead ends: 3042 [2021-11-22 22:37:08,919 INFO L226 Difference]: Without dead ends: 3040 [2021-11-22 22:37:08,920 INFO L932 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 [2021-11-22 22:37:08,921 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 2161 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 2185 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:08,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2161 Valid, 2185 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-11-22 22:37:08,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-11-22 22:37:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 3040. [2021-11-22 22:37:08,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3040 states, 3019 states have (on average 1.4342497515733688) internal successors, (4330), 3021 states have internal predecessors, (4330), 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) [2021-11-22 22:37:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 4350 transitions. [2021-11-22 22:37:08,996 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 4350 transitions. Word has length 27 [2021-11-22 22:37:08,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:08,998 INFO L470 AbstractCegarLoop]: Abstraction has 3040 states and 4350 transitions. [2021-11-22 22:37:08,998 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) [2021-11-22 22:37:08,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 4350 transitions. [2021-11-22 22:37:09,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 22:37:09,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:09,001 INFO L514 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] [2021-11-22 22:37:09,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 22:37:09,001 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)] === [2021-11-22 22:37:09,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:09,002 INFO L85 PathProgramCache]: Analyzing trace with hash 621355833, now seen corresponding path program 1 times [2021-11-22 22:37:09,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:09,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898902072] [2021-11-22 22:37:09,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:09,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:37:09,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:09,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898902072] [2021-11-22 22:37:09,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898902072] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:09,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:09,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:09,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767600593] [2021-11-22 22:37:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:09,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:09,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:09,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:09,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:09,106 INFO L87 Difference]: Start difference. First operand 3040 states and 4350 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-22 22:37:11,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:11,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:11,255 INFO L93 Difference]: Finished difference Result 6717 states and 9569 transitions. [2021-11-22 22:37:11,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:11,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 28 [2021-11-22 22:37:11,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:11,269 INFO L225 Difference]: With dead ends: 6717 [2021-11-22 22:37:11,269 INFO L226 Difference]: Without dead ends: 3672 [2021-11-22 22:37:11,276 INFO L932 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 [2021-11-22 22:37:11,277 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 1969 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2805 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:11,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 2805 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 22:37:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3672 states. [2021-11-22 22:37:11,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3672 to 3667. [2021-11-22 22:37:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 3637 states have (on average 1.4176519109155898) internal successors, (5156), 3637 states have internal predecessors, (5156), 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) [2021-11-22 22:37:11,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5190 transitions. [2021-11-22 22:37:11,392 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5190 transitions. Word has length 28 [2021-11-22 22:37:11,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:11,392 INFO L470 AbstractCegarLoop]: Abstraction has 3667 states and 5190 transitions. [2021-11-22 22:37:11,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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) [2021-11-22 22:37:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5190 transitions. [2021-11-22 22:37:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-22 22:37:11,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:11,401 INFO L514 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, 1] [2021-11-22 22:37:11,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 22:37:11,401 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)] === [2021-11-22 22:37:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:11,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1431769710, now seen corresponding path program 1 times [2021-11-22 22:37:11,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:11,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018517021] [2021-11-22 22:37:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:11,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:11,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 22:37:11,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018517021] [2021-11-22 22:37:11,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018517021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:11,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:11,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:11,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515337751] [2021-11-22 22:37:11,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:11,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:11,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:11,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:11,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:11,643 INFO L87 Difference]: Start difference. First operand 3667 states and 5190 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-22 22:37:11,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:11,830 INFO L93 Difference]: Finished difference Result 8423 states and 12038 transitions. [2021-11-22 22:37:11,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:11,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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 113 [2021-11-22 22:37:11,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:11,860 INFO L225 Difference]: With dead ends: 8423 [2021-11-22 22:37:11,860 INFO L226 Difference]: Without dead ends: 4759 [2021-11-22 22:37:11,868 INFO L932 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 [2021-11-22 22:37:11,868 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 825 mSDsluCounter, 2157 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 825 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:11,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [825 Valid, 4334 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:11,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2021-11-22 22:37:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 4759. [2021-11-22 22:37:12,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4759 states, 4729 states have (on average 1.4411080566716008) internal successors, (6815), 4729 states have internal predecessors, (6815), 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) [2021-11-22 22:37:12,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 6849 transitions. [2021-11-22 22:37:12,031 INFO L78 Accepts]: Start accepts. Automaton has 4759 states and 6849 transitions. Word has length 113 [2021-11-22 22:37:12,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:12,032 INFO L470 AbstractCegarLoop]: Abstraction has 4759 states and 6849 transitions. [2021-11-22 22:37:12,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 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) [2021-11-22 22:37:12,032 INFO L276 IsEmpty]: Start isEmpty. Operand 4759 states and 6849 transitions. [2021-11-22 22:37:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 22:37:12,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:12,042 INFO L514 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] [2021-11-22 22:37:12,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 22:37:12,043 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)] === [2021-11-22 22:37:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:12,043 INFO L85 PathProgramCache]: Analyzing trace with hash -694947830, now seen corresponding path program 1 times [2021-11-22 22:37:12,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:12,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687870935] [2021-11-22 22:37:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:12,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:12,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:12,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:12,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687870935] [2021-11-22 22:37:12,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687870935] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:12,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:12,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:12,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757480548] [2021-11-22 22:37:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:12,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:12,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:12,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:12,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:12,286 INFO L87 Difference]: Start difference. First operand 4759 states and 6849 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-22 22:37:12,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:12,455 INFO L93 Difference]: Finished difference Result 9531 states and 13733 transitions. [2021-11-22 22:37:12,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:12,456 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2021-11-22 22:37:12,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:12,469 INFO L225 Difference]: With dead ends: 9531 [2021-11-22 22:37:12,470 INFO L226 Difference]: Without dead ends: 4775 [2021-11-22 22:37:12,479 INFO L932 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 [2021-11-22 22:37:12,480 INFO L933 BasicCegarLoop]: 2173 mSDtfsCounter, 5 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:12,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6515 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:12,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4775 states. [2021-11-22 22:37:12,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4775 to 4771. [2021-11-22 22:37:12,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4771 states, 4739 states have (on average 1.4401772525849335) internal successors, (6825), 4741 states have internal predecessors, (6825), 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) [2021-11-22 22:37:12,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6861 transitions. [2021-11-22 22:37:12,630 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6861 transitions. Word has length 131 [2021-11-22 22:37:12,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:12,630 INFO L470 AbstractCegarLoop]: Abstraction has 4771 states and 6861 transitions. [2021-11-22 22:37:12,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-22 22:37:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6861 transitions. [2021-11-22 22:37:12,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-22 22:37:12,639 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:12,639 INFO L514 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] [2021-11-22 22:37:12,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 22:37:12,640 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)] === [2021-11-22 22:37:12,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:12,640 INFO L85 PathProgramCache]: Analyzing trace with hash 656437388, now seen corresponding path program 1 times [2021-11-22 22:37:12,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:12,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289806636] [2021-11-22 22:37:12,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:12,641 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:12,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:12,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:12,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289806636] [2021-11-22 22:37:12,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289806636] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:12,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:12,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:12,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87711224] [2021-11-22 22:37:12,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:12,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:12,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:12,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:12,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:12,815 INFO L87 Difference]: Start difference. First operand 4771 states and 6861 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-22 22:37:12,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:12,955 INFO L93 Difference]: Finished difference Result 9563 states and 13765 transitions. [2021-11-22 22:37:12,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:12,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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 131 [2021-11-22 22:37:12,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:12,970 INFO L225 Difference]: With dead ends: 9563 [2021-11-22 22:37:12,971 INFO L226 Difference]: Without dead ends: 4795 [2021-11-22 22:37:12,981 INFO L932 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 [2021-11-22 22:37:12,982 INFO L933 BasicCegarLoop]: 2175 mSDtfsCounter, 9 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:12,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6510 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:12,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4795 states. [2021-11-22 22:37:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4795 to 4783. [2021-11-22 22:37:13,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4783 states, 4751 states have (on average 1.4390654599031782) internal successors, (6837), 4753 states have internal predecessors, (6837), 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) [2021-11-22 22:37:13,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4783 states to 4783 states and 6873 transitions. [2021-11-22 22:37:13,113 INFO L78 Accepts]: Start accepts. Automaton has 4783 states and 6873 transitions. Word has length 131 [2021-11-22 22:37:13,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:13,114 INFO L470 AbstractCegarLoop]: Abstraction has 4783 states and 6873 transitions. [2021-11-22 22:37:13,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 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) [2021-11-22 22:37:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 4783 states and 6873 transitions. [2021-11-22 22:37:13,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-22 22:37:13,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:13,124 INFO L514 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] [2021-11-22 22:37:13,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 22:37:13,124 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)] === [2021-11-22 22:37:13,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:13,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1674690626, now seen corresponding path program 1 times [2021-11-22 22:37:13,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:13,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551096751] [2021-11-22 22:37:13,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:13,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:13,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:13,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:13,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551096751] [2021-11-22 22:37:13,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551096751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:13,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:13,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:13,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082813559] [2021-11-22 22:37:13,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:13,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:13,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:13,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:13,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:13,334 INFO L87 Difference]: Start difference. First operand 4783 states and 6873 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2021-11-22 22:37:13,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:13,467 INFO L93 Difference]: Finished difference Result 9603 states and 13805 transitions. [2021-11-22 22:37:13,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:13,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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 137 [2021-11-22 22:37:13,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:13,479 INFO L225 Difference]: With dead ends: 9603 [2021-11-22 22:37:13,480 INFO L226 Difference]: Without dead ends: 4823 [2021-11-22 22:37:13,488 INFO L932 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 [2021-11-22 22:37:13,489 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 17 mSDsluCounter, 4336 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:13,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 6513 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:13,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4823 states. [2021-11-22 22:37:13,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4823 to 4799. [2021-11-22 22:37:13,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4799 states, 4767 states have (on average 1.4375917767988253) internal successors, (6853), 4769 states have internal predecessors, (6853), 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) [2021-11-22 22:37:13,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4799 states to 4799 states and 6889 transitions. [2021-11-22 22:37:13,716 INFO L78 Accepts]: Start accepts. Automaton has 4799 states and 6889 transitions. Word has length 137 [2021-11-22 22:37:13,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:13,716 INFO L470 AbstractCegarLoop]: Abstraction has 4799 states and 6889 transitions. [2021-11-22 22:37:13,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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) [2021-11-22 22:37:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4799 states and 6889 transitions. [2021-11-22 22:37:13,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-22 22:37:13,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:13,723 INFO L514 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] [2021-11-22 22:37:13,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 22:37:13,724 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)] === [2021-11-22 22:37:13,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:13,724 INFO L85 PathProgramCache]: Analyzing trace with hash 139128503, now seen corresponding path program 1 times [2021-11-22 22:37:13,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:13,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691318490] [2021-11-22 22:37:13,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:13,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:13,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:13,903 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:13,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:13,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691318490] [2021-11-22 22:37:13,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691318490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:13,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:13,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:13,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024902815] [2021-11-22 22:37:13,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:13,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:13,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:13,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:13,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:13,905 INFO L87 Difference]: Start difference. First operand 4799 states and 6889 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-11-22 22:37:14,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:14,032 INFO L93 Difference]: Finished difference Result 9647 states and 13849 transitions. [2021-11-22 22:37:14,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:14,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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 144 [2021-11-22 22:37:14,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:14,043 INFO L225 Difference]: With dead ends: 9647 [2021-11-22 22:37:14,043 INFO L226 Difference]: Without dead ends: 4851 [2021-11-22 22:37:14,052 INFO L932 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 [2021-11-22 22:37:14,053 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 23 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 6516 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:14,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 6516 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:14,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4851 states. [2021-11-22 22:37:14,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4851 to 4813. [2021-11-22 22:37:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4813 states, 4781 states have (on average 1.4363103953147878) internal successors, (6867), 4783 states have internal predecessors, (6867), 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) [2021-11-22 22:37:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4813 states to 4813 states and 6903 transitions. [2021-11-22 22:37:14,158 INFO L78 Accepts]: Start accepts. Automaton has 4813 states and 6903 transitions. Word has length 144 [2021-11-22 22:37:14,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:14,159 INFO L470 AbstractCegarLoop]: Abstraction has 4813 states and 6903 transitions. [2021-11-22 22:37:14,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 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) [2021-11-22 22:37:14,159 INFO L276 IsEmpty]: Start isEmpty. Operand 4813 states and 6903 transitions. [2021-11-22 22:37:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-22 22:37:14,166 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:14,166 INFO L514 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] [2021-11-22 22:37:14,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 22:37:14,167 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)] === [2021-11-22 22:37:14,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:14,168 INFO L85 PathProgramCache]: Analyzing trace with hash 511253200, now seen corresponding path program 1 times [2021-11-22 22:37:14,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:14,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520814364] [2021-11-22 22:37:14,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:14,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:14,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:14,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:14,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520814364] [2021-11-22 22:37:14,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520814364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:14,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:14,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:37:14,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287270468] [2021-11-22 22:37:14,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:14,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:14,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:14,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:14,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:37:14,343 INFO L87 Difference]: Start difference. First operand 4813 states and 6903 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 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) [2021-11-22 22:37:14,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:14,474 INFO L93 Difference]: Finished difference Result 9927 states and 14237 transitions. [2021-11-22 22:37:14,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:14,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 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 [2021-11-22 22:37:14,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:14,485 INFO L225 Difference]: With dead ends: 9927 [2021-11-22 22:37:14,485 INFO L226 Difference]: Without dead ends: 5117 [2021-11-22 22:37:14,494 INFO L932 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 [2021-11-22 22:37:14,494 INFO L933 BasicCegarLoop]: 2167 mSDtfsCounter, 100 mSDsluCounter, 2162 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 4329 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:14,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 4329 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:14,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5117 states. [2021-11-22 22:37:14,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5117 to 4821. [2021-11-22 22:37:14,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4821 states, 4789 states have (on average 1.4355815410315307) internal successors, (6875), 4791 states have internal predecessors, (6875), 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) [2021-11-22 22:37:14,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4821 states to 4821 states and 6911 transitions. [2021-11-22 22:37:14,601 INFO L78 Accepts]: Start accepts. Automaton has 4821 states and 6911 transitions. Word has length 148 [2021-11-22 22:37:14,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:14,601 INFO L470 AbstractCegarLoop]: Abstraction has 4821 states and 6911 transitions. [2021-11-22 22:37:14,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 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) [2021-11-22 22:37:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 4821 states and 6911 transitions. [2021-11-22 22:37:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-11-22 22:37:14,609 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:14,609 INFO L514 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, 1] [2021-11-22 22:37:14,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 22:37:14,610 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)] === [2021-11-22 22:37:14,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:14,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1606597685, now seen corresponding path program 1 times [2021-11-22 22:37:14,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:14,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321093461] [2021-11-22 22:37:14,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:14,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:14,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-22 22:37:14,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:14,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321093461] [2021-11-22 22:37:14,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321093461] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:37:14,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060297555] [2021-11-22 22:37:14,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:14,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:37:14,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:37:14,824 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) [2021-11-22 22:37:14,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 22:37:15,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:15,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 4247 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 22:37:16,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:37:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-22 22:37:16,194 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:37:16,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060297555] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:16,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:37:16,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-22 22:37:16,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004471511] [2021-11-22 22:37:16,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:16,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:37:16,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:16,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:37:16,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:37:16,196 INFO L87 Difference]: Start difference. First operand 4821 states and 6911 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-22 22:37:18,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 22:37:18,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:18,350 INFO L93 Difference]: Finished difference Result 5829 states and 8252 transitions. [2021-11-22 22:37:18,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:37:18,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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 153 [2021-11-22 22:37:18,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:18,361 INFO L225 Difference]: With dead ends: 5829 [2021-11-22 22:37:18,362 INFO L226 Difference]: Without dead ends: 4808 [2021-11-22 22:37:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:37:18,366 INFO L933 BasicCegarLoop]: 2587 mSDtfsCounter, 606 mSDsluCounter, 1972 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 4559 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:18,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 4559 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-11-22 22:37:18,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-11-22 22:37:18,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4782. [2021-11-22 22:37:18,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4782 states, 4756 states have (on average 1.4375525651808243) internal successors, (6837), 4756 states have internal predecessors, (6837), 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) [2021-11-22 22:37:18,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4782 states to 4782 states and 6862 transitions. [2021-11-22 22:37:18,594 INFO L78 Accepts]: Start accepts. Automaton has 4782 states and 6862 transitions. Word has length 153 [2021-11-22 22:37:18,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:18,595 INFO L470 AbstractCegarLoop]: Abstraction has 4782 states and 6862 transitions. [2021-11-22 22:37:18,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 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) [2021-11-22 22:37:18,595 INFO L276 IsEmpty]: Start isEmpty. Operand 4782 states and 6862 transitions. [2021-11-22 22:37:18,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-11-22 22:37:18,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:18,605 INFO L514 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, 1] [2021-11-22 22:37:18,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 22:37:18,819 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 [2021-11-22 22:37:18,820 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)] === [2021-11-22 22:37:18,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:18,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1123774826, now seen corresponding path program 1 times [2021-11-22 22:37:18,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:18,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864431699] [2021-11-22 22:37:18,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:18,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:19,068 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-22 22:37:19,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:19,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864431699] [2021-11-22 22:37:19,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864431699] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:37:19,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66053305] [2021-11-22 22:37:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:19,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:37:19,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:37:19,070 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) [2021-11-22 22:37:19,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 22:37:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:20,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 6515 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 22:37:20,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:37:21,061 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-22 22:37:21,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 22:37:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-22 22:37:21,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66053305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 22:37:21,448 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 22:37:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-22 22:37:21,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938036563] [2021-11-22 22:37:21,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 22:37:21,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:37:21,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:21,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:37:21,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:37:21,453 INFO L87 Difference]: Start difference. First operand 4782 states and 6862 transitions. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2021-11-22 22:37:21,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:21,627 INFO L93 Difference]: Finished difference Result 10169 states and 14563 transitions. [2021-11-22 22:37:21,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:37:21,627 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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 265 [2021-11-22 22:37:21,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:21,640 INFO L225 Difference]: With dead ends: 10169 [2021-11-22 22:37:21,640 INFO L226 Difference]: Without dead ends: 5390 [2021-11-22 22:37:21,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 532 GetRequests, 528 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:37:21,651 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 492 mSDsluCounter, 4320 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 6485 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:21,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 6485 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:37:21,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2021-11-22 22:37:21,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5390. [2021-11-22 22:37:21,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5364 states have (on average 1.4267337807606264) internal successors, (7653), 5364 states have internal predecessors, (7653), 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) [2021-11-22 22:37:21,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 7678 transitions. [2021-11-22 22:37:21,791 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 7678 transitions. Word has length 265 [2021-11-22 22:37:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:21,791 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 7678 transitions. [2021-11-22 22:37:21,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 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) [2021-11-22 22:37:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 7678 transitions. [2021-11-22 22:37:21,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2021-11-22 22:37:21,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:21,803 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:21,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 22:37:22,026 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 [2021-11-22 22:37:22,026 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)] === [2021-11-22 22:37:22,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:22,027 INFO L85 PathProgramCache]: Analyzing trace with hash -22733034, now seen corresponding path program 2 times [2021-11-22 22:37:22,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:22,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778264978] [2021-11-22 22:37:22,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:22,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-22 22:37:22,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:22,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778264978] [2021-11-22 22:37:22,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778264978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:22,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:22,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:37:22,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754264301] [2021-11-22 22:37:22,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:22,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:37:22,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:37:22,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:37:22,364 INFO L87 Difference]: Start difference. First operand 5390 states and 7678 transitions. Second operand has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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) [2021-11-22 22:37:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:22,774 INFO L93 Difference]: Finished difference Result 12249 states and 17252 transitions. [2021-11-22 22:37:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:37:22,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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 285 [2021-11-22 22:37:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:22,789 INFO L225 Difference]: With dead ends: 12249 [2021-11-22 22:37:22,790 INFO L226 Difference]: Without dead ends: 6862 [2021-11-22 22:37:22,799 INFO L932 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 [2021-11-22 22:37:22,800 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 340 mSDsluCounter, 8845 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 11081 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:22,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 11081 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:37:22,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2021-11-22 22:37:23,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 5406. [2021-11-22 22:37:23,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5406 states, 5380 states have (on average 1.42546468401487) internal successors, (7669), 5380 states have internal predecessors, (7669), 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) [2021-11-22 22:37:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5406 states to 5406 states and 7694 transitions. [2021-11-22 22:37:23,031 INFO L78 Accepts]: Start accepts. Automaton has 5406 states and 7694 transitions. Word has length 285 [2021-11-22 22:37:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:23,032 INFO L470 AbstractCegarLoop]: Abstraction has 5406 states and 7694 transitions. [2021-11-22 22:37:23,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.166666666666664) internal successors, (229), 6 states have internal predecessors, (229), 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) [2021-11-22 22:37:23,032 INFO L276 IsEmpty]: Start isEmpty. Operand 5406 states and 7694 transitions. [2021-11-22 22:37:23,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-22 22:37:23,042 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:23,042 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:23,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 22:37:23,042 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)] === [2021-11-22 22:37:23,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:23,043 INFO L85 PathProgramCache]: Analyzing trace with hash 641797886, now seen corresponding path program 1 times [2021-11-22 22:37:23,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:23,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561830364] [2021-11-22 22:37:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:23,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:23,394 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-11-22 22:37:23,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:23,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561830364] [2021-11-22 22:37:23,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561830364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:23,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:23,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 22:37:23,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497773981] [2021-11-22 22:37:23,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:23,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 22:37:23,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 22:37:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 22:37:23,396 INFO L87 Difference]: Start difference. First operand 5406 states and 7694 transitions. Second operand has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2021-11-22 22:37:23,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:23,833 INFO L93 Difference]: Finished difference Result 12369 states and 17391 transitions. [2021-11-22 22:37:23,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:37:23,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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 309 [2021-11-22 22:37:23,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:23,849 INFO L225 Difference]: With dead ends: 12369 [2021-11-22 22:37:23,849 INFO L226 Difference]: Without dead ends: 6966 [2021-11-22 22:37:23,858 INFO L932 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 [2021-11-22 22:37:23,859 INFO L933 BasicCegarLoop]: 2236 mSDtfsCounter, 396 mSDsluCounter, 8871 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 11107 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:23,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 11107 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 22:37:23,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6966 states. [2021-11-22 22:37:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6966 to 5430. [2021-11-22 22:37:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5430 states, 5404 states have (on average 1.4235751295336787) internal successors, (7693), 5404 states have internal predecessors, (7693), 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) [2021-11-22 22:37:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5430 states to 5430 states and 7718 transitions. [2021-11-22 22:37:23,994 INFO L78 Accepts]: Start accepts. Automaton has 5430 states and 7718 transitions. Word has length 309 [2021-11-22 22:37:23,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:23,994 INFO L470 AbstractCegarLoop]: Abstraction has 5430 states and 7718 transitions. [2021-11-22 22:37:23,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.833333333333336) internal successors, (239), 6 states have internal predecessors, (239), 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) [2021-11-22 22:37:23,994 INFO L276 IsEmpty]: Start isEmpty. Operand 5430 states and 7718 transitions. [2021-11-22 22:37:24,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-22 22:37:24,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:24,003 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:24,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-22 22:37:24,005 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)] === [2021-11-22 22:37:24,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:24,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1881260294, now seen corresponding path program 1 times [2021-11-22 22:37:24,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:24,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701363038] [2021-11-22 22:37:24,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:24,007 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:24,300 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 137 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-22 22:37:24,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:24,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701363038] [2021-11-22 22:37:24,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701363038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:24,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:24,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:24,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740286550] [2021-11-22 22:37:24,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:24,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:24,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:24,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:24,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:24,302 INFO L87 Difference]: Start difference. First operand 5430 states and 7718 transitions. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2021-11-22 22:37:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:24,567 INFO L93 Difference]: Finished difference Result 11169 states and 15863 transitions. [2021-11-22 22:37:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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 309 [2021-11-22 22:37:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:24,580 INFO L225 Difference]: With dead ends: 11169 [2021-11-22 22:37:24,580 INFO L226 Difference]: Without dead ends: 5742 [2021-11-22 22:37:24,589 INFO L932 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 [2021-11-22 22:37:24,589 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 95 mSDsluCounter, 4315 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 6510 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:24,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 6510 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5742 states. [2021-11-22 22:37:24,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5742 to 5454. [2021-11-22 22:37:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5454 states, 5428 states have (on average 1.4217022844509948) internal successors, (7717), 5428 states have internal predecessors, (7717), 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) [2021-11-22 22:37:24,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5454 states to 5454 states and 7742 transitions. [2021-11-22 22:37:24,713 INFO L78 Accepts]: Start accepts. Automaton has 5454 states and 7742 transitions. Word has length 309 [2021-11-22 22:37:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:24,714 INFO L470 AbstractCegarLoop]: Abstraction has 5454 states and 7742 transitions. [2021-11-22 22:37:24,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2021-11-22 22:37:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 5454 states and 7742 transitions. [2021-11-22 22:37:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-22 22:37:24,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:24,722 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:24,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 22:37:24,723 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)] === [2021-11-22 22:37:24,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:24,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1126116738, now seen corresponding path program 1 times [2021-11-22 22:37:24,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:24,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356509947] [2021-11-22 22:37:24,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:24,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 142 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-22 22:37:25,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:25,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356509947] [2021-11-22 22:37:25,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356509947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:25,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:25,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:25,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160359898] [2021-11-22 22:37:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:25,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:25,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:25,086 INFO L87 Difference]: Start difference. First operand 5454 states and 7742 transitions. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2021-11-22 22:37:25,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:25,396 INFO L93 Difference]: Finished difference Result 11145 states and 15811 transitions. [2021-11-22 22:37:25,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:25,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 309 [2021-11-22 22:37:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:25,409 INFO L225 Difference]: With dead ends: 11145 [2021-11-22 22:37:25,409 INFO L226 Difference]: Without dead ends: 5694 [2021-11-22 22:37:25,419 INFO L932 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 [2021-11-22 22:37:25,419 INFO L933 BasicCegarLoop]: 2235 mSDtfsCounter, 78 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 6588 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:25,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 6588 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2021-11-22 22:37:25,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5478. [2021-11-22 22:37:25,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5452 states have (on average 1.41984592809978) internal successors, (7741), 5452 states have internal predecessors, (7741), 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) [2021-11-22 22:37:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 7766 transitions. [2021-11-22 22:37:25,588 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 7766 transitions. Word has length 309 [2021-11-22 22:37:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:25,589 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 7766 transitions. [2021-11-22 22:37:25,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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) [2021-11-22 22:37:25,590 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 7766 transitions. [2021-11-22 22:37:25,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2021-11-22 22:37:25,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:25,602 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:25,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 22:37:25,602 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)] === [2021-11-22 22:37:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:25,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1823022202, now seen corresponding path program 1 times [2021-11-22 22:37:25,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:25,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974213456] [2021-11-22 22:37:25,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:25,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-22 22:37:25,909 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:25,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974213456] [2021-11-22 22:37:25,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974213456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:25,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:25,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:25,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027950497] [2021-11-22 22:37:25,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:25,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:25,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:25,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:25,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:25,911 INFO L87 Difference]: Start difference. First operand 5478 states and 7766 transitions. Second operand has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2021-11-22 22:37:26,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:26,148 INFO L93 Difference]: Finished difference Result 11041 states and 15656 transitions. [2021-11-22 22:37:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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 309 [2021-11-22 22:37:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:26,162 INFO L225 Difference]: With dead ends: 11041 [2021-11-22 22:37:26,162 INFO L226 Difference]: Without dead ends: 5566 [2021-11-22 22:37:26,171 INFO L932 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 [2021-11-22 22:37:26,171 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 28 mSDsluCounter, 4322 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6494 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:26,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 6494 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:26,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2021-11-22 22:37:26,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5486. [2021-11-22 22:37:26,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5460 states have (on average 1.4192307692307693) internal successors, (7749), 5460 states have internal predecessors, (7749), 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) [2021-11-22 22:37:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 7774 transitions. [2021-11-22 22:37:26,314 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 7774 transitions. Word has length 309 [2021-11-22 22:37:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:26,315 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 7774 transitions. [2021-11-22 22:37:26,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.75) internal successors, (259), 4 states have internal predecessors, (259), 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) [2021-11-22 22:37:26,315 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 7774 transitions. [2021-11-22 22:37:26,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-11-22 22:37:26,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:26,323 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:26,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 22:37:26,323 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)] === [2021-11-22 22:37:26,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:26,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1442149726, now seen corresponding path program 1 times [2021-11-22 22:37:26,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:26,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392511701] [2021-11-22 22:37:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:26,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:26,665 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 22:37:26,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:26,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392511701] [2021-11-22 22:37:26,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392511701] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:26,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:26,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 22:37:26,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758936740] [2021-11-22 22:37:26,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:26,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 22:37:26,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:26,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 22:37:26,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 22:37:26,669 INFO L87 Difference]: Start difference. First operand 5486 states and 7774 transitions. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2021-11-22 22:37:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:26,844 INFO L93 Difference]: Finished difference Result 10993 states and 15585 transitions. [2021-11-22 22:37:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 22:37:26,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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 333 [2021-11-22 22:37:26,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:26,860 INFO L225 Difference]: With dead ends: 10993 [2021-11-22 22:37:26,860 INFO L226 Difference]: Without dead ends: 5510 [2021-11-22 22:37:26,867 INFO L932 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 [2021-11-22 22:37:26,868 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 9 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6492 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:26,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6492 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:26,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5510 states. [2021-11-22 22:37:27,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5510 to 5494. [2021-11-22 22:37:27,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5494 states, 5468 states have (on average 1.4186174103877103) internal successors, (7757), 5468 states have internal predecessors, (7757), 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) [2021-11-22 22:37:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5494 states to 5494 states and 7782 transitions. [2021-11-22 22:37:27,136 INFO L78 Accepts]: Start accepts. Automaton has 5494 states and 7782 transitions. Word has length 333 [2021-11-22 22:37:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:27,136 INFO L470 AbstractCegarLoop]: Abstraction has 5494 states and 7782 transitions. [2021-11-22 22:37:27,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2021-11-22 22:37:27,136 INFO L276 IsEmpty]: Start isEmpty. Operand 5494 states and 7782 transitions. [2021-11-22 22:37:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2021-11-22 22:37:27,143 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:27,143 INFO L514 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, 1] [2021-11-22 22:37:27,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 22:37:27,143 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)] === [2021-11-22 22:37:27,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:27,144 INFO L85 PathProgramCache]: Analyzing trace with hash 644327874, now seen corresponding path program 1 times [2021-11-22 22:37:27,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:27,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551236981] [2021-11-22 22:37:27,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:27,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2021-11-22 22:37:27,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:27,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551236981] [2021-11-22 22:37:27,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551236981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:27,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:27,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 22:37:27,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014092783] [2021-11-22 22:37:27,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:27,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 22:37:27,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:27,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 22:37:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:37:27,804 INFO L87 Difference]: Start difference. First operand 5494 states and 7782 transitions. Second operand has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 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) [2021-11-22 22:37:28,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:28,314 INFO L93 Difference]: Finished difference Result 14637 states and 20465 transitions. [2021-11-22 22:37:28,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:37:28,315 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 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 357 [2021-11-22 22:37:28,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:28,339 INFO L225 Difference]: With dead ends: 14637 [2021-11-22 22:37:28,339 INFO L226 Difference]: Without dead ends: 9146 [2021-11-22 22:37:28,349 INFO L932 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 [2021-11-22 22:37:28,350 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 1690 mSDsluCounter, 10971 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1691 SdHoareTripleChecker+Valid, 13139 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:28,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1691 Valid, 13139 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9146 states. [2021-11-22 22:37:28,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9146 to 5514. [2021-11-22 22:37:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5488 states have (on average 1.4170918367346939) internal successors, (7777), 5488 states have internal predecessors, (7777), 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) [2021-11-22 22:37:28,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 7802 transitions. [2021-11-22 22:37:28,536 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 7802 transitions. Word has length 357 [2021-11-22 22:37:28,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:28,537 INFO L470 AbstractCegarLoop]: Abstraction has 5514 states and 7802 transitions. [2021-11-22 22:37:28,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.285714285714285) internal successors, (191), 7 states have internal predecessors, (191), 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) [2021-11-22 22:37:28,537 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 7802 transitions. [2021-11-22 22:37:28,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-11-22 22:37:28,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:28,544 INFO L514 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, 1] [2021-11-22 22:37:28,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-22 22:37:28,544 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)] === [2021-11-22 22:37:28,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1533082028, now seen corresponding path program 1 times [2021-11-22 22:37:28,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:28,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285793236] [2021-11-22 22:37:28,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:28,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:29,073 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-11-22 22:37:29,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:29,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285793236] [2021-11-22 22:37:29,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285793236] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:29,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:29,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:37:29,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689813940] [2021-11-22 22:37:29,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:29,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:37:29,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:29,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:37:29,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:37:29,076 INFO L87 Difference]: Start difference. First operand 5514 states and 7802 transitions. Second operand has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2021-11-22 22:37:29,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:29,482 INFO L93 Difference]: Finished difference Result 12289 states and 17297 transitions. [2021-11-22 22:37:29,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:37:29,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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 363 [2021-11-22 22:37:29,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:29,498 INFO L225 Difference]: With dead ends: 12289 [2021-11-22 22:37:29,498 INFO L226 Difference]: Without dead ends: 6778 [2021-11-22 22:37:29,504 INFO L932 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 [2021-11-22 22:37:29,505 INFO L933 BasicCegarLoop]: 2168 mSDtfsCounter, 236 mSDsluCounter, 6472 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 8640 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:29,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 8640 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:29,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6778 states. [2021-11-22 22:37:29,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6778 to 5526. [2021-11-22 22:37:29,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5526 states, 5500 states have (on average 1.4161818181818182) internal successors, (7789), 5500 states have internal predecessors, (7789), 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) [2021-11-22 22:37:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5526 states to 5526 states and 7814 transitions. [2021-11-22 22:37:29,683 INFO L78 Accepts]: Start accepts. Automaton has 5526 states and 7814 transitions. Word has length 363 [2021-11-22 22:37:29,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:29,683 INFO L470 AbstractCegarLoop]: Abstraction has 5526 states and 7814 transitions. [2021-11-22 22:37:29,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.4) internal successors, (202), 5 states have internal predecessors, (202), 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) [2021-11-22 22:37:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 5526 states and 7814 transitions. [2021-11-22 22:37:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2021-11-22 22:37:29,691 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:29,691 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 22:37:29,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 22:37:29,692 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)] === [2021-11-22 22:37:29,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:29,692 INFO L85 PathProgramCache]: Analyzing trace with hash 11700082, now seen corresponding path program 1 times [2021-11-22 22:37:29,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:29,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48210903] [2021-11-22 22:37:29,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:29,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 208 trivial. 0 not checked. [2021-11-22 22:37:30,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:30,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48210903] [2021-11-22 22:37:30,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48210903] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:30,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:30,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:37:30,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009192960] [2021-11-22 22:37:30,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:30,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:37:30,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:30,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:37:30,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:37:30,213 INFO L87 Difference]: Start difference. First operand 5526 states and 7814 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) [2021-11-22 22:37:30,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:30,514 INFO L93 Difference]: Finished difference Result 12329 states and 17333 transitions. [2021-11-22 22:37:30,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:37:30,515 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 369 [2021-11-22 22:37:30,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:30,529 INFO L225 Difference]: With dead ends: 12329 [2021-11-22 22:37:30,529 INFO L226 Difference]: Without dead ends: 6806 [2021-11-22 22:37:30,538 INFO L932 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 [2021-11-22 22:37:30,539 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 246 mSDsluCounter, 6479 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:30,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 8649 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:30,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6806 states. [2021-11-22 22:37:30,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6806 to 5538. [2021-11-22 22:37:30,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 5512 states have (on average 1.4152757619738752) internal successors, (7801), 5512 states have internal predecessors, (7801), 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) [2021-11-22 22:37:30,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 7826 transitions. [2021-11-22 22:37:30,703 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 7826 transitions. Word has length 369 [2021-11-22 22:37:30,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:30,704 INFO L470 AbstractCegarLoop]: Abstraction has 5538 states and 7826 transitions. [2021-11-22 22:37:30,704 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) [2021-11-22 22:37:30,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 7826 transitions. [2021-11-22 22:37:30,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2021-11-22 22:37:30,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:30,711 INFO L514 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, 1] [2021-11-22 22:37:30,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-22 22:37:30,711 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)] === [2021-11-22 22:37:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:30,712 INFO L85 PathProgramCache]: Analyzing trace with hash 489773460, now seen corresponding path program 1 times [2021-11-22 22:37:30,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:30,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645458216] [2021-11-22 22:37:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:30,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:31,190 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-11-22 22:37:31,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:31,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645458216] [2021-11-22 22:37:31,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645458216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:31,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:31,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 22:37:31,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973098988] [2021-11-22 22:37:31,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:31,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:37:31,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:31,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:37:31,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 22:37:31,192 INFO L87 Difference]: Start difference. First operand 5538 states and 7826 transitions. Second operand has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-11-22 22:37:31,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:31,589 INFO L93 Difference]: Finished difference Result 12333 states and 17329 transitions. [2021-11-22 22:37:31,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 22:37:31,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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 375 [2021-11-22 22:37:31,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:31,605 INFO L225 Difference]: With dead ends: 12333 [2021-11-22 22:37:31,606 INFO L226 Difference]: Without dead ends: 6798 [2021-11-22 22:37:31,613 INFO L932 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 [2021-11-22 22:37:31,613 INFO L933 BasicCegarLoop]: 2175 mSDtfsCounter, 254 mSDsluCounter, 6464 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 8639 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:31,614 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [255 Valid, 8639 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:31,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6798 states. [2021-11-22 22:37:31,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6798 to 5562. [2021-11-22 22:37:31,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 5536 states have (on average 1.4134754335260116) internal successors, (7825), 5536 states have internal predecessors, (7825), 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) [2021-11-22 22:37:31,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7850 transitions. [2021-11-22 22:37:31,787 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7850 transitions. Word has length 375 [2021-11-22 22:37:31,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:31,787 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 7850 transitions. [2021-11-22 22:37:31,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.0) internal successors, (230), 5 states have internal predecessors, (230), 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) [2021-11-22 22:37:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7850 transitions. [2021-11-22 22:37:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2021-11-22 22:37:31,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:31,795 INFO L514 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, 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] [2021-11-22 22:37:31,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-22 22:37:31,796 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)] === [2021-11-22 22:37:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1828685260, now seen corresponding path program 1 times [2021-11-22 22:37:31,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:31,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821361125] [2021-11-22 22:37:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:31,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:37:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:37:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-11-22 22:37:32,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:37:32,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821361125] [2021-11-22 22:37:32,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821361125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:37:32,381 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:37:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 22:37:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63224674] [2021-11-22 22:37:32,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:37:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 22:37:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:37:32,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 22:37:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 22:37:32,383 INFO L87 Difference]: Start difference. First operand 5562 states and 7850 transitions. Second operand has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2021-11-22 22:37:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:37:32,806 INFO L93 Difference]: Finished difference Result 12309 states and 17281 transitions. [2021-11-22 22:37:32,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:37:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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 387 [2021-11-22 22:37:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:37:32,823 INFO L225 Difference]: With dead ends: 12309 [2021-11-22 22:37:32,823 INFO L226 Difference]: Without dead ends: 6750 [2021-11-22 22:37:32,832 INFO L932 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 [2021-11-22 22:37:32,832 INFO L933 BasicCegarLoop]: 2213 mSDtfsCounter, 304 mSDsluCounter, 13182 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 15395 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 22:37:32,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 15395 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 22:37:32,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6750 states. [2021-11-22 22:37:32,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6750 to 5586. [2021-11-22 22:37:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5586 states, 5560 states have (on average 1.4116906474820143) internal successors, (7849), 5560 states have internal predecessors, (7849), 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) [2021-11-22 22:37:33,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5586 states to 5586 states and 7874 transitions. [2021-11-22 22:37:33,008 INFO L78 Accepts]: Start accepts. Automaton has 5586 states and 7874 transitions. Word has length 387 [2021-11-22 22:37:33,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:37:33,008 INFO L470 AbstractCegarLoop]: Abstraction has 5586 states and 7874 transitions. [2021-11-22 22:37:33,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 31.875) internal successors, (255), 8 states have internal predecessors, (255), 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) [2021-11-22 22:37:33,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5586 states and 7874 transitions. [2021-11-22 22:37:33,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2021-11-22 22:37:33,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:37:33,015 INFO L514 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, 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] [2021-11-22 22:37:33,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-22 22:37:33,015 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)] === [2021-11-22 22:37:33,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:37:33,016 INFO L85 PathProgramCache]: Analyzing trace with hash 733377296, now seen corresponding path program 1 times [2021-11-22 22:37:33,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:37:33,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892479556] [2021-11-22 22:37:33,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:37:33,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:38:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:38:01,768 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-22 22:38:01,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:38:01,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892479556] [2021-11-22 22:38:01,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892479556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:38:01,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 22:38:01,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 22:38:01,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349552282] [2021-11-22 22:38:01,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:38:01,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 22:38:01,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:38:01,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 22:38:01,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 22:38:01,771 INFO L87 Difference]: Start difference. First operand 5586 states and 7874 transitions. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2021-11-22 22:38:01,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:38:01,939 INFO L93 Difference]: Finished difference Result 11173 states and 15765 transitions. [2021-11-22 22:38:01,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 22:38:01,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 393 [2021-11-22 22:38:01,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:38:01,956 INFO L225 Difference]: With dead ends: 11173 [2021-11-22 22:38:01,957 INFO L226 Difference]: Without dead ends: 5590 [2021-11-22 22:38:01,966 INFO L932 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 [2021-11-22 22:38:01,966 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 0 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:38:01,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4342 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:38:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5590 states. [2021-11-22 22:38:02,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5590 to 5590. [2021-11-22 22:38:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5564 states have (on average 1.411394680086269) internal successors, (7853), 5564 states have internal predecessors, (7853), 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) [2021-11-22 22:38:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7878 transitions. [2021-11-22 22:38:02,143 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7878 transitions. Word has length 393 [2021-11-22 22:38:02,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:38:02,143 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7878 transitions. [2021-11-22 22:38:02,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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) [2021-11-22 22:38:02,144 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7878 transitions. [2021-11-22 22:38:02,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-22 22:38:02,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:38:02,152 INFO L514 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, 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] [2021-11-22 22:38:02,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-22 22:38:02,153 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)] === [2021-11-22 22:38:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:38:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 201204468, now seen corresponding path program 1 times [2021-11-22 22:38:02,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:38:02,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702300894] [2021-11-22 22:38:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:38:02,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:38:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:38:37,401 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 202 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 22:38:37,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:38:37,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702300894] [2021-11-22 22:38:37,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702300894] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:38:37,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958419758] [2021-11-22 22:38:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:38:37,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:38:37,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:38:37,404 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) [2021-11-22 22:38:37,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 22:38:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:38:40,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 9213 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 22:38:40,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:38:40,629 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-11-22 22:38:40,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 22:38:40,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958419758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 22:38:40,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 22:38:40,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-22 22:38:40,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606668043] [2021-11-22 22:38:40,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 22:38:40,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 22:38:40,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:38:40,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 22:38:40,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:38:40,631 INFO L87 Difference]: Start difference. First operand 5590 states and 7878 transitions. Second operand has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2021-11-22 22:38:40,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:38:40,889 INFO L93 Difference]: Finished difference Result 11281 states and 15871 transitions. [2021-11-22 22:38:40,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 22:38:40,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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 395 [2021-11-22 22:38:40,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:38:40,909 INFO L225 Difference]: With dead ends: 11281 [2021-11-22 22:38:40,909 INFO L226 Difference]: Without dead ends: 5694 [2021-11-22 22:38:40,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-22 22:38:40,919 INFO L933 BasicCegarLoop]: 2191 mSDtfsCounter, 61 mSDsluCounter, 6482 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 8673 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:38:40,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 8673 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:38:40,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5694 states. [2021-11-22 22:38:41,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5694 to 5590. [2021-11-22 22:38:41,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5590 states, 5564 states have (on average 1.411394680086269) internal successors, (7853), 5564 states have internal predecessors, (7853), 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) [2021-11-22 22:38:41,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5590 states to 5590 states and 7878 transitions. [2021-11-22 22:38:41,115 INFO L78 Accepts]: Start accepts. Automaton has 5590 states and 7878 transitions. Word has length 395 [2021-11-22 22:38:41,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:38:41,116 INFO L470 AbstractCegarLoop]: Abstraction has 5590 states and 7878 transitions. [2021-11-22 22:38:41,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.6) internal successors, (268), 5 states have internal predecessors, (268), 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) [2021-11-22 22:38:41,116 INFO L276 IsEmpty]: Start isEmpty. Operand 5590 states and 7878 transitions. [2021-11-22 22:38:41,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2021-11-22 22:38:41,125 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:38:41,125 INFO L514 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, 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] [2021-11-22 22:38:41,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-22 22:38:41,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:38:41,340 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)] === [2021-11-22 22:38:41,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:38:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1599955116, now seen corresponding path program 1 times [2021-11-22 22:38:41,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:38:41,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185544498] [2021-11-22 22:38:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:38:41,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:38:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:38:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 202 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 22:38:57,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:38:57,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185544498] [2021-11-22 22:38:57,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185544498] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:38:57,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [702525461] [2021-11-22 22:38:57,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:38:57,675 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:38:57,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:38:57,676 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) [2021-11-22 22:38:57,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 22:40:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:40:47,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 9255 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 22:40:47,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 22:40:47,623 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 202 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 22:40:47,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 22:40:48,073 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 202 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-22 22:40:48,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [702525461] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 22:40:48,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 22:40:48,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-22 22:40:48,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228655923] [2021-11-22 22:40:48,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 22:40:48,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 22:40:48,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 22:40:48,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 22:40:48,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-22 22:40:48,076 INFO L87 Difference]: Start difference. First operand 5590 states and 7878 transitions. Second operand has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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) [2021-11-22 22:40:48,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 22:40:48,292 INFO L93 Difference]: Finished difference Result 11189 states and 15789 transitions. [2021-11-22 22:40:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 22:40:48,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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 395 [2021-11-22 22:40:48,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 22:40:48,305 INFO L225 Difference]: With dead ends: 11189 [2021-11-22 22:40:48,305 INFO L226 Difference]: Without dead ends: 5602 [2021-11-22 22:40:48,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 787 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2021-11-22 22:40:48,314 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 0 mSDsluCounter, 8680 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10852 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 22:40:48,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10852 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 22:40:48,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2021-11-22 22:40:48,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 5602. [2021-11-22 22:40:48,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5602 states, 5576 states have (on average 1.410509325681492) internal successors, (7865), 5576 states have internal predecessors, (7865), 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) [2021-11-22 22:40:48,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5602 states to 5602 states and 7890 transitions. [2021-11-22 22:40:48,486 INFO L78 Accepts]: Start accepts. Automaton has 5602 states and 7890 transitions. Word has length 395 [2021-11-22 22:40:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 22:40:48,487 INFO L470 AbstractCegarLoop]: Abstraction has 5602 states and 7890 transitions. [2021-11-22 22:40:48,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.0) internal successors, (357), 7 states have internal predecessors, (357), 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) [2021-11-22 22:40:48,487 INFO L276 IsEmpty]: Start isEmpty. Operand 5602 states and 7890 transitions. [2021-11-22 22:40:48,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2021-11-22 22:40:48,496 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 22:40:48,496 INFO L514 BasicCegarLoop]: trace histogram [8, 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, 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] [2021-11-22 22:40:48,697 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forcibly destroying the process [2021-11-22 22:40:48,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 137 [2021-11-22 22:40:48,783 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,SelfDestructingSolverStorable28 [2021-11-22 22:40:48,783 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)] === [2021-11-22 22:40:48,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 22:40:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1377845286, now seen corresponding path program 2 times [2021-11-22 22:40:48,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 22:40:48,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285389159] [2021-11-22 22:40:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 22:40:48,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 22:41:10,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 22:41:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 223 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-22 22:41:11,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 22:41:11,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285389159] [2021-11-22 22:41:11,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285389159] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 22:41:11,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [289706943] [2021-11-22 22:41:11,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-22 22:41:11,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 22:41:11,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 22:41:11,176 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) [2021-11-22 22:41:11,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15