/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 12:57:49,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 12:57:49,661 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 12:57:49,695 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 12:57:49,696 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 12:57:49,697 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 12:57:49,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 12:57:49,718 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 12:57:49,721 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 12:57:49,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 12:57:49,728 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 12:57:49,729 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 12:57:49,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 12:57:49,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 12:57:49,734 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 12:57:49,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 12:57:49,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 12:57:49,738 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 12:57:49,747 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 12:57:49,752 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 12:57:49,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 12:57:49,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 12:57:49,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 12:57:49,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 12:57:49,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 12:57:49,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 12:57:49,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 12:57:49,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 12:57:49,771 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 12:57:49,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 12:57:49,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 12:57:49,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 12:57:49,777 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 12:57:49,778 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 12:57:49,780 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 12:57:49,780 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 12:57:49,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 12:57:49,781 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 12:57:49,781 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 12:57:49,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 12:57:49,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 12:57:49,784 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 12:57:49,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 12:57:49,830 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 12:57:49,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 12:57:49,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 12:57:49,832 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 12:57:49,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 12:57:49,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 12:57:49,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 12:57:49,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 12:57:49,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 12:57:49,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 12:57:49,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 12:57:49,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 12:57:49,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 12:57:49,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 12:57:49,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 12:57:49,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 12:57:49,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:57:49,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 12:57:49,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 12:57:49,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 12:57:49,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 12:57:49,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 12:57:49,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 12:57:49,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 12:57:49,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 12:57:50,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 12:57:50,226 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 12:57:50,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 12:57:50,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 12:57:50,231 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 12:57:50,232 INFO L432 ainManager$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 [2020-12-22 12:57:50,314 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35e1934/bb0bb5fa83d84d31a1587c21cd2d02c1/FLAGf927e2016 [2020-12-22 12:57:51,328 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 12:57:51,329 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 [2020-12-22 12:57:51,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35e1934/bb0bb5fa83d84d31a1587c21cd2d02c1/FLAGf927e2016 [2020-12-22 12:57:51,841 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff35e1934/bb0bb5fa83d84d31a1587c21cd2d02c1 [2020-12-22 12:57:51,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 12:57:51,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 12:57:51,850 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 12:57:51,850 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 12:57:51,854 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 12:57:51,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:57:51" (1/1) ... [2020-12-22 12:57:51,856 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7217c9a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:51, skipping insertion in model container [2020-12-22 12:57:51,857 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:57:51" (1/1) ... [2020-12-22 12:57:51,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 12:57:51,960 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 12:57:53,176 WARN L226 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] [2020-12-22 12:57:53,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:57:53,311 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 12:57:53,627 WARN L226 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] [2020-12-22 12:57:53,673 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 12:57:54,021 INFO L208 MainTranslator]: Completed translation [2020-12-22 12:57:54,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54 WrapperNode [2020-12-22 12:57:54,021 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 12:57:54,023 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 12:57:54,023 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 12:57:54,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 12:57:54,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,518 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 12:57:54,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 12:57:54,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 12:57:54,522 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 12:57:54,532 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,585 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:54,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... [2020-12-22 12:57:55,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 12:57:55,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 12:57:55,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 12:57:55,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 12:57:55,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 12:57:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 12:57:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 12:57:55,152 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 12:57:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 12:57:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 12:57:55,153 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2020-12-22 12:57:55,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2020-12-22 12:57:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 12:57:55,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 12:57:55,155 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2020-12-22 12:57:55,155 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2020-12-22 12:57:55,156 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2020-12-22 12:57:55,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2020-12-22 12:57:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 12:57:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 12:57:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 12:57:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 12:57:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 12:57:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 12:57:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 12:57:55,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 12:58:19,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 12:58:19,409 INFO L299 CfgBuilder]: Removed 1265 assume(true) statements. [2020-12-22 12:58:19,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:58:19 BoogieIcfgContainer [2020-12-22 12:58:19,413 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 12:58:19,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 12:58:19,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 12:58:19,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 12:58:19,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:57:51" (1/3) ... [2020-12-22 12:58:19,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec64bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:58:19, skipping insertion in model container [2020-12-22 12:58:19,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:57:54" (2/3) ... [2020-12-22 12:58:19,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec64bd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:58:19, skipping insertion in model container [2020-12-22 12:58:19,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:58:19" (3/3) ... [2020-12-22 12:58:19,421 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2020-12-22 12:58:19,427 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 12:58:19,434 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-22 12:58:19,452 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-22 12:58:19,487 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 12:58:19,487 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 12:58:19,487 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 12:58:19,487 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 12:58:19,487 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 12:58:19,488 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 12:58:19,488 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 12:58:19,488 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 12:58:19,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1461 states. [2020-12-22 12:58:19,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-22 12:58:19,539 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:19,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:19,541 INFO L429 AbstractCegarLoop]: === Iteration 1 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:19,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:19,547 INFO L82 PathProgramCache]: Analyzing trace with hash -2065204851, now seen corresponding path program 1 times [2020-12-22 12:58:19,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:19,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910854108] [2020-12-22 12:58:19,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:20,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:20,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:20,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910854108] [2020-12-22 12:58:20,243 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:20,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:20,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146990751] [2020-12-22 12:58:20,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:20,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:20,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:20,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:20,269 INFO L87 Difference]: Start difference. First operand 1461 states. Second operand 3 states. [2020-12-22 12:58:22,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:22,694 INFO L93 Difference]: Finished difference Result 4354 states and 6414 transitions. [2020-12-22 12:58:22,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:22,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-22 12:58:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:22,738 INFO L225 Difference]: With dead ends: 4354 [2020-12-22 12:58:22,738 INFO L226 Difference]: Without dead ends: 2892 [2020-12-22 12:58:22,754 INFO L677 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 [2020-12-22 12:58:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2020-12-22 12:58:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2888. [2020-12-22 12:58:22,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2020-12-22 12:58:22,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4199 transitions. [2020-12-22 12:58:22,975 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4199 transitions. Word has length 19 [2020-12-22 12:58:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:22,976 INFO L481 AbstractCegarLoop]: Abstraction has 2888 states and 4199 transitions. [2020-12-22 12:58:22,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4199 transitions. [2020-12-22 12:58:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:58:22,985 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:22,985 INFO L422 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] [2020-12-22 12:58:22,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 12:58:22,986 INFO L429 AbstractCegarLoop]: === Iteration 2 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:22,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:22,987 INFO L82 PathProgramCache]: Analyzing trace with hash 677414015, now seen corresponding path program 1 times [2020-12-22 12:58:22,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:22,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635779453] [2020-12-22 12:58:22,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:23,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:23,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635779453] [2020-12-22 12:58:23,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:23,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:23,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357575713] [2020-12-22 12:58:23,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:23,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:23,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:23,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:23,300 INFO L87 Difference]: Start difference. First operand 2888 states and 4199 transitions. Second operand 3 states. [2020-12-22 12:58:23,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:23,467 INFO L93 Difference]: Finished difference Result 2918 states and 4227 transitions. [2020-12-22 12:58:23,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:23,468 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 12:58:23,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:23,484 INFO L225 Difference]: With dead ends: 2918 [2020-12-22 12:58:23,484 INFO L226 Difference]: Without dead ends: 2903 [2020-12-22 12:58:23,486 INFO L677 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 [2020-12-22 12:58:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2020-12-22 12:58:23,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2888. [2020-12-22 12:58:23,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2888 states. [2020-12-22 12:58:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4198 transitions. [2020-12-22 12:58:23,604 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4198 transitions. Word has length 23 [2020-12-22 12:58:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:23,604 INFO L481 AbstractCegarLoop]: Abstraction has 2888 states and 4198 transitions. [2020-12-22 12:58:23,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4198 transitions. [2020-12-22 12:58:23,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-22 12:58:23,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:23,607 INFO L422 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] [2020-12-22 12:58:23,607 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 12:58:23,607 INFO L429 AbstractCegarLoop]: === Iteration 3 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:23,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:23,608 INFO L82 PathProgramCache]: Analyzing trace with hash 677473597, now seen corresponding path program 1 times [2020-12-22 12:58:23,608 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:23,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514518057] [2020-12-22 12:58:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:23,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:23,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514518057] [2020-12-22 12:58:23,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:23,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:23,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413903837] [2020-12-22 12:58:23,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:23,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:23,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:23,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:23,792 INFO L87 Difference]: Start difference. First operand 2888 states and 4198 transitions. Second operand 3 states. [2020-12-22 12:58:25,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:25,986 INFO L93 Difference]: Finished difference Result 2888 states and 4198 transitions. [2020-12-22 12:58:25,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:25,987 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-22 12:58:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:26,001 INFO L225 Difference]: With dead ends: 2888 [2020-12-22 12:58:26,002 INFO L226 Difference]: Without dead ends: 2886 [2020-12-22 12:58:26,003 INFO L677 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 [2020-12-22 12:58:26,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2020-12-22 12:58:26,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2020-12-22 12:58:26,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2886 states. [2020-12-22 12:58:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 4196 transitions. [2020-12-22 12:58:26,120 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 4196 transitions. Word has length 23 [2020-12-22 12:58:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:26,120 INFO L481 AbstractCegarLoop]: Abstraction has 2886 states and 4196 transitions. [2020-12-22 12:58:26,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 4196 transitions. [2020-12-22 12:58:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-22 12:58:26,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:26,123 INFO L422 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] [2020-12-22 12:58:26,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 12:58:26,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:26,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:26,124 INFO L82 PathProgramCache]: Analyzing trace with hash -473152160, now seen corresponding path program 1 times [2020-12-22 12:58:26,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:26,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745185069] [2020-12-22 12:58:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:26,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:26,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745185069] [2020-12-22 12:58:26,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:26,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:26,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914842042] [2020-12-22 12:58:26,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:26,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:26,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:26,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:26,318 INFO L87 Difference]: Start difference. First operand 2886 states and 4196 transitions. Second operand 3 states. [2020-12-22 12:58:28,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:28,518 INFO L93 Difference]: Finished difference Result 2886 states and 4196 transitions. [2020-12-22 12:58:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:28,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-22 12:58:28,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:28,533 INFO L225 Difference]: With dead ends: 2886 [2020-12-22 12:58:28,533 INFO L226 Difference]: Without dead ends: 2884 [2020-12-22 12:58:28,535 INFO L677 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 [2020-12-22 12:58:28,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2020-12-22 12:58:28,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2020-12-22 12:58:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2884 states. [2020-12-22 12:58:28,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4194 transitions. [2020-12-22 12:58:28,661 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4194 transitions. Word has length 24 [2020-12-22 12:58:28,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:28,662 INFO L481 AbstractCegarLoop]: Abstraction has 2884 states and 4194 transitions. [2020-12-22 12:58:28,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:28,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4194 transitions. [2020-12-22 12:58:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-22 12:58:28,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:28,665 INFO L422 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] [2020-12-22 12:58:28,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 12:58:28,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:28,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1782812249, now seen corresponding path program 1 times [2020-12-22 12:58:28,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:28,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200080103] [2020-12-22 12:58:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:28,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:28,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200080103] [2020-12-22 12:58:28,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:28,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:28,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852161035] [2020-12-22 12:58:28,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:28,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:28,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:28,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:28,901 INFO L87 Difference]: Start difference. First operand 2884 states and 4194 transitions. Second operand 3 states. [2020-12-22 12:58:31,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:31,181 INFO L93 Difference]: Finished difference Result 2884 states and 4194 transitions. [2020-12-22 12:58:31,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:31,181 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-12-22 12:58:31,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:31,196 INFO L225 Difference]: With dead ends: 2884 [2020-12-22 12:58:31,197 INFO L226 Difference]: Without dead ends: 2882 [2020-12-22 12:58:31,198 INFO L677 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 [2020-12-22 12:58:31,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2020-12-22 12:58:31,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2020-12-22 12:58:31,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2882 states. [2020-12-22 12:58:31,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4192 transitions. [2020-12-22 12:58:31,346 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4192 transitions. Word has length 25 [2020-12-22 12:58:31,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:31,347 INFO L481 AbstractCegarLoop]: Abstraction has 2882 states and 4192 transitions. [2020-12-22 12:58:31,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:31,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4192 transitions. [2020-12-22 12:58:31,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-22 12:58:31,349 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:31,349 INFO L422 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] [2020-12-22 12:58:31,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 12:58:31,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:31,351 INFO L82 PathProgramCache]: Analyzing trace with hash 567397962, now seen corresponding path program 1 times [2020-12-22 12:58:31,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:31,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522125223] [2020-12-22 12:58:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:31,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522125223] [2020-12-22 12:58:31,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:31,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:31,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585421015] [2020-12-22 12:58:31,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:31,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:31,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:31,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:31,568 INFO L87 Difference]: Start difference. First operand 2882 states and 4192 transitions. Second operand 3 states. [2020-12-22 12:58:33,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:33,776 INFO L93 Difference]: Finished difference Result 2882 states and 4192 transitions. [2020-12-22 12:58:33,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:33,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-22 12:58:33,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:33,792 INFO L225 Difference]: With dead ends: 2882 [2020-12-22 12:58:33,793 INFO L226 Difference]: Without dead ends: 2880 [2020-12-22 12:58:33,799 INFO L677 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 [2020-12-22 12:58:33,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2020-12-22 12:58:33,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2020-12-22 12:58:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2020-12-22 12:58:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4190 transitions. [2020-12-22 12:58:33,954 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4190 transitions. Word has length 26 [2020-12-22 12:58:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:33,957 INFO L481 AbstractCegarLoop]: Abstraction has 2880 states and 4190 transitions. [2020-12-22 12:58:33,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4190 transitions. [2020-12-22 12:58:33,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-22 12:58:33,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:33,961 INFO L422 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] [2020-12-22 12:58:33,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 12:58:33,962 INFO L429 AbstractCegarLoop]: === Iteration 7 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:33,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:33,963 INFO L82 PathProgramCache]: Analyzing trace with hash 409470481, now seen corresponding path program 1 times [2020-12-22 12:58:33,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:33,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277563276] [2020-12-22 12:58:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:34,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:34,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277563276] [2020-12-22 12:58:34,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:34,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:34,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009565402] [2020-12-22 12:58:34,126 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:34,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:34,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:34,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:34,128 INFO L87 Difference]: Start difference. First operand 2880 states and 4190 transitions. Second operand 3 states. [2020-12-22 12:58:36,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:36,428 INFO L93 Difference]: Finished difference Result 6373 states and 9225 transitions. [2020-12-22 12:58:36,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:36,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-22 12:58:36,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:36,449 INFO L225 Difference]: With dead ends: 6373 [2020-12-22 12:58:36,449 INFO L226 Difference]: Without dead ends: 3490 [2020-12-22 12:58:36,456 INFO L677 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 [2020-12-22 12:58:36,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2020-12-22 12:58:36,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3485. [2020-12-22 12:58:36,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3485 states. [2020-12-22 12:58:36,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5008 transitions. [2020-12-22 12:58:36,635 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5008 transitions. Word has length 27 [2020-12-22 12:58:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:36,636 INFO L481 AbstractCegarLoop]: Abstraction has 3485 states and 5008 transitions. [2020-12-22 12:58:36,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5008 transitions. [2020-12-22 12:58:36,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-22 12:58:36,644 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:36,644 INFO L422 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] [2020-12-22 12:58:36,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 12:58:36,645 INFO L429 AbstractCegarLoop]: === Iteration 8 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:36,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:36,645 INFO L82 PathProgramCache]: Analyzing trace with hash 591192921, now seen corresponding path program 1 times [2020-12-22 12:58:36,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:36,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341533613] [2020-12-22 12:58:36,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:36,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 12:58:36,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341533613] [2020-12-22 12:58:36,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:36,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:36,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029329558] [2020-12-22 12:58:36,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:36,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:36,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:36,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:36,934 INFO L87 Difference]: Start difference. First operand 3485 states and 5008 transitions. Second operand 3 states. [2020-12-22 12:58:37,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:37,208 INFO L93 Difference]: Finished difference Result 8023 states and 11638 transitions. [2020-12-22 12:58:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:37,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-22 12:58:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:37,245 INFO L225 Difference]: With dead ends: 8023 [2020-12-22 12:58:37,245 INFO L226 Difference]: Without dead ends: 4541 [2020-12-22 12:58:37,253 INFO L677 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 [2020-12-22 12:58:37,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-12-22 12:58:37,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2020-12-22 12:58:37,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4541 states. [2020-12-22 12:58:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6631 transitions. [2020-12-22 12:58:37,490 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6631 transitions. Word has length 112 [2020-12-22 12:58:37,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:37,490 INFO L481 AbstractCegarLoop]: Abstraction has 4541 states and 6631 transitions. [2020-12-22 12:58:37,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:37,491 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6631 transitions. [2020-12-22 12:58:37,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 12:58:37,503 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:37,505 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:37,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 12:58:37,505 INFO L429 AbstractCegarLoop]: === Iteration 9 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:37,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:37,507 INFO L82 PathProgramCache]: Analyzing trace with hash -556825001, now seen corresponding path program 1 times [2020-12-22 12:58:37,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:37,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313839715] [2020-12-22 12:58:37,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 12:58:37,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313839715] [2020-12-22 12:58:37,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:37,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:37,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708001836] [2020-12-22 12:58:37,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:37,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:37,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:37,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:37,795 INFO L87 Difference]: Start difference. First operand 4541 states and 6631 transitions. Second operand 4 states. [2020-12-22 12:58:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:38,048 INFO L93 Difference]: Finished difference Result 9095 states and 13297 transitions. [2020-12-22 12:58:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:38,049 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-12-22 12:58:38,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:38,075 INFO L225 Difference]: With dead ends: 9095 [2020-12-22 12:58:38,076 INFO L226 Difference]: Without dead ends: 4557 [2020-12-22 12:58:38,086 INFO L677 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 [2020-12-22 12:58:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2020-12-22 12:58:38,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4553. [2020-12-22 12:58:38,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4553 states. [2020-12-22 12:58:38,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6643 transitions. [2020-12-22 12:58:38,303 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6643 transitions. Word has length 130 [2020-12-22 12:58:38,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:38,305 INFO L481 AbstractCegarLoop]: Abstraction has 4553 states and 6643 transitions. [2020-12-22 12:58:38,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6643 transitions. [2020-12-22 12:58:38,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-12-22 12:58:38,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:38,324 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:38,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 12:58:38,326 INFO L429 AbstractCegarLoop]: === Iteration 10 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2119167381, now seen corresponding path program 1 times [2020-12-22 12:58:38,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:38,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16400058] [2020-12-22 12:58:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:38,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:38,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 12:58:38,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16400058] [2020-12-22 12:58:38,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:38,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:38,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814195769] [2020-12-22 12:58:38,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:38,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:38,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:38,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:38,711 INFO L87 Difference]: Start difference. First operand 4553 states and 6643 transitions. Second operand 4 states. [2020-12-22 12:58:38,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:38,973 INFO L93 Difference]: Finished difference Result 9127 states and 13329 transitions. [2020-12-22 12:58:38,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:38,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-12-22 12:58:38,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:38,991 INFO L225 Difference]: With dead ends: 9127 [2020-12-22 12:58:38,991 INFO L226 Difference]: Without dead ends: 4577 [2020-12-22 12:58:39,003 INFO L677 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 [2020-12-22 12:58:39,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2020-12-22 12:58:39,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4565. [2020-12-22 12:58:39,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4565 states. [2020-12-22 12:58:39,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6655 transitions. [2020-12-22 12:58:39,215 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6655 transitions. Word has length 130 [2020-12-22 12:58:39,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:39,216 INFO L481 AbstractCegarLoop]: Abstraction has 4565 states and 6655 transitions. [2020-12-22 12:58:39,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:39,216 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6655 transitions. [2020-12-22 12:58:39,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-12-22 12:58:39,227 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:39,227 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:39,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 12:58:39,228 INFO L429 AbstractCegarLoop]: === Iteration 11 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:39,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:39,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1131900254, now seen corresponding path program 1 times [2020-12-22 12:58:39,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:39,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681401873] [2020-12-22 12:58:39,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:39,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 12:58:39,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681401873] [2020-12-22 12:58:39,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:39,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:39,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528599743] [2020-12-22 12:58:39,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:39,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:39,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:39,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:39,531 INFO L87 Difference]: Start difference. First operand 4565 states and 6655 transitions. Second operand 4 states. [2020-12-22 12:58:39,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:39,788 INFO L93 Difference]: Finished difference Result 9163 states and 13365 transitions. [2020-12-22 12:58:39,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:39,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-12-22 12:58:39,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:39,809 INFO L225 Difference]: With dead ends: 9163 [2020-12-22 12:58:39,809 INFO L226 Difference]: Without dead ends: 4601 [2020-12-22 12:58:39,824 INFO L677 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 [2020-12-22 12:58:39,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2020-12-22 12:58:40,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4579. [2020-12-22 12:58:40,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4579 states. [2020-12-22 12:58:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6669 transitions. [2020-12-22 12:58:40,118 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6669 transitions. Word has length 136 [2020-12-22 12:58:40,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:40,118 INFO L481 AbstractCegarLoop]: Abstraction has 4579 states and 6669 transitions. [2020-12-22 12:58:40,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:40,118 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6669 transitions. [2020-12-22 12:58:40,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-12-22 12:58:40,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:40,132 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:40,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 12:58:40,132 INFO L429 AbstractCegarLoop]: === Iteration 12 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:40,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:40,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1424408872, now seen corresponding path program 1 times [2020-12-22 12:58:40,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:40,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468624818] [2020-12-22 12:58:40,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:40,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 12:58:40,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468624818] [2020-12-22 12:58:40,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:40,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:40,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109115059] [2020-12-22 12:58:40,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:40,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:40,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:40,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:40,489 INFO L87 Difference]: Start difference. First operand 4579 states and 6669 transitions. Second operand 3 states. [2020-12-22 12:58:40,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:40,759 INFO L93 Difference]: Finished difference Result 9451 states and 13761 transitions. [2020-12-22 12:58:40,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:40,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 143 [2020-12-22 12:58:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:40,773 INFO L225 Difference]: With dead ends: 9451 [2020-12-22 12:58:40,773 INFO L226 Difference]: Without dead ends: 4875 [2020-12-22 12:58:40,785 INFO L677 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 [2020-12-22 12:58:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2020-12-22 12:58:40,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4587. [2020-12-22 12:58:40,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4587 states. [2020-12-22 12:58:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6677 transitions. [2020-12-22 12:58:41,006 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6677 transitions. Word has length 143 [2020-12-22 12:58:41,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:41,006 INFO L481 AbstractCegarLoop]: Abstraction has 4587 states and 6677 transitions. [2020-12-22 12:58:41,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:41,006 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6677 transitions. [2020-12-22 12:58:41,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-22 12:58:41,017 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:41,017 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:41,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 12:58:41,018 INFO L429 AbstractCegarLoop]: === Iteration 13 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:41,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:41,018 INFO L82 PathProgramCache]: Analyzing trace with hash 499833131, now seen corresponding path program 1 times [2020-12-22 12:58:41,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:41,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716970337] [2020-12-22 12:58:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:41,305 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 12:58:41,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716970337] [2020-12-22 12:58:41,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:41,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:41,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476120930] [2020-12-22 12:58:41,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:41,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:41,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:41,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:41,307 INFO L87 Difference]: Start difference. First operand 4587 states and 6677 transitions. Second operand 4 states. [2020-12-22 12:58:41,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:41,655 INFO L93 Difference]: Finished difference Result 9215 states and 13417 transitions. [2020-12-22 12:58:41,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:41,656 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-12-22 12:58:41,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:41,669 INFO L225 Difference]: With dead ends: 9215 [2020-12-22 12:58:41,669 INFO L226 Difference]: Without dead ends: 4631 [2020-12-22 12:58:41,683 INFO L677 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 [2020-12-22 12:58:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2020-12-22 12:58:41,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4599. [2020-12-22 12:58:41,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4599 states. [2020-12-22 12:58:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6689 transitions. [2020-12-22 12:58:41,888 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6689 transitions. Word has length 148 [2020-12-22 12:58:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:41,889 INFO L481 AbstractCegarLoop]: Abstraction has 4599 states and 6689 transitions. [2020-12-22 12:58:41,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:41,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6689 transitions. [2020-12-22 12:58:41,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-12-22 12:58:41,900 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:41,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:41,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-22 12:58:41,900 INFO L429 AbstractCegarLoop]: === Iteration 14 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:41,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1960295004, now seen corresponding path program 1 times [2020-12-22 12:58:41,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:41,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44341405] [2020-12-22 12:58:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:42,175 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-22 12:58:42,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44341405] [2020-12-22 12:58:42,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747022001] [2020-12-22 12:58:42,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:58:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:43,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 3411 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:58:43,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:58:43,847 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-22 12:58:43,847 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:58:43,847 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-22 12:58:43,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241312738] [2020-12-22 12:58:43,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:43,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:43,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:58:43,851 INFO L87 Difference]: Start difference. First operand 4599 states and 6689 transitions. Second operand 3 states. [2020-12-22 12:58:46,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:46,095 INFO L93 Difference]: Finished difference Result 5559 states and 7982 transitions. [2020-12-22 12:58:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:46,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-12-22 12:58:46,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:46,108 INFO L225 Difference]: With dead ends: 5559 [2020-12-22 12:58:46,108 INFO L226 Difference]: Without dead ends: 4586 [2020-12-22 12:58:46,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:58:46,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2020-12-22 12:58:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4564. [2020-12-22 12:58:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4564 states. [2020-12-22 12:58:46,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6644 transitions. [2020-12-22 12:58:46,321 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6644 transitions. Word has length 152 [2020-12-22 12:58:46,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:46,321 INFO L481 AbstractCegarLoop]: Abstraction has 4564 states and 6644 transitions. [2020-12-22 12:58:46,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:46,322 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6644 transitions. [2020-12-22 12:58:46,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-12-22 12:58:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:46,336 INFO L422 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] [2020-12-22 12:58:46,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 12:58:46,550 INFO L429 AbstractCegarLoop]: === Iteration 15 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:46,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:46,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2115324467, now seen corresponding path program 1 times [2020-12-22 12:58:46,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:46,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664994294] [2020-12-22 12:58:46,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:46,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:46,886 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 12:58:46,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664994294] [2020-12-22 12:58:46,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65121329] [2020-12-22 12:58:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:58:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:48,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 5048 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 12:58:48,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:58:49,020 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 12:58:49,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 12:58:49,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-12-22 12:58:49,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363389223] [2020-12-22 12:58:49,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:58:49,022 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:49,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:58:49,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:58:49,022 INFO L87 Difference]: Start difference. First operand 4564 states and 6644 transitions. Second operand 5 states. [2020-12-22 12:58:49,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:49,426 INFO L93 Difference]: Finished difference Result 9709 states and 14095 transitions. [2020-12-22 12:58:49,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:49,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-12-22 12:58:49,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:49,442 INFO L225 Difference]: With dead ends: 9709 [2020-12-22 12:58:49,442 INFO L226 Difference]: Without dead ends: 5148 [2020-12-22 12:58:49,454 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-22 12:58:49,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5148 states. [2020-12-22 12:58:49,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5148 to 4860. [2020-12-22 12:58:49,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4860 states. [2020-12-22 12:58:49,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4860 states to 4860 states and 7044 transitions. [2020-12-22 12:58:49,760 INFO L78 Accepts]: Start accepts. Automaton has 4860 states and 7044 transitions. Word has length 264 [2020-12-22 12:58:49,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:49,760 INFO L481 AbstractCegarLoop]: Abstraction has 4860 states and 7044 transitions. [2020-12-22 12:58:49,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:58:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4860 states and 7044 transitions. [2020-12-22 12:58:49,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-12-22 12:58:49,775 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:49,775 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:49,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 12:58:49,989 INFO L429 AbstractCegarLoop]: === Iteration 16 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:49,990 INFO L82 PathProgramCache]: Analyzing trace with hash -279795631, now seen corresponding path program 2 times [2020-12-22 12:58:49,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:49,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063219765] [2020-12-22 12:58:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:50,595 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-12-22 12:58:50,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063219765] [2020-12-22 12:58:50,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:50,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:50,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292181326] [2020-12-22 12:58:50,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:50,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:50,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:50,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:50,601 INFO L87 Difference]: Start difference. First operand 4860 states and 7044 transitions. Second operand 4 states. [2020-12-22 12:58:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:51,011 INFO L93 Difference]: Finished difference Result 9813 states and 14224 transitions. [2020-12-22 12:58:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:51,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 274 [2020-12-22 12:58:51,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:51,026 INFO L225 Difference]: With dead ends: 9813 [2020-12-22 12:58:51,026 INFO L226 Difference]: Without dead ends: 4956 [2020-12-22 12:58:51,036 INFO L677 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 [2020-12-22 12:58:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4956 states. [2020-12-22 12:58:51,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4956 to 4868. [2020-12-22 12:58:51,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4868 states. [2020-12-22 12:58:51,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4868 states to 4868 states and 7052 transitions. [2020-12-22 12:58:51,380 INFO L78 Accepts]: Start accepts. Automaton has 4868 states and 7052 transitions. Word has length 274 [2020-12-22 12:58:51,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:51,380 INFO L481 AbstractCegarLoop]: Abstraction has 4868 states and 7052 transitions. [2020-12-22 12:58:51,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:51,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4868 states and 7052 transitions. [2020-12-22 12:58:51,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-12-22 12:58:51,397 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:51,398 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:51,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-22 12:58:51,398 INFO L429 AbstractCegarLoop]: === Iteration 17 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:51,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1237061453, now seen corresponding path program 1 times [2020-12-22 12:58:51,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:51,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724459524] [2020-12-22 12:58:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:51,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:51,833 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-12-22 12:58:51,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724459524] [2020-12-22 12:58:51,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:51,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:51,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067621315] [2020-12-22 12:58:51,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:51,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:51,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:51,836 INFO L87 Difference]: Start difference. First operand 4868 states and 7052 transitions. Second operand 4 states. [2020-12-22 12:58:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:52,272 INFO L93 Difference]: Finished difference Result 9845 states and 14264 transitions. [2020-12-22 12:58:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:52,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-12-22 12:58:52,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:52,287 INFO L225 Difference]: With dead ends: 9845 [2020-12-22 12:58:52,287 INFO L226 Difference]: Without dead ends: 4980 [2020-12-22 12:58:52,298 INFO L677 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 [2020-12-22 12:58:52,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4980 states. [2020-12-22 12:58:52,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4980 to 4892. [2020-12-22 12:58:52,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4892 states. [2020-12-22 12:58:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4892 states to 4892 states and 7076 transitions. [2020-12-22 12:58:52,533 INFO L78 Accepts]: Start accepts. Automaton has 4892 states and 7076 transitions. Word has length 296 [2020-12-22 12:58:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:52,533 INFO L481 AbstractCegarLoop]: Abstraction has 4892 states and 7076 transitions. [2020-12-22 12:58:52,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:52,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4892 states and 7076 transitions. [2020-12-22 12:58:52,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-12-22 12:58:52,548 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:52,549 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:52,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-22 12:58:52,549 INFO L429 AbstractCegarLoop]: === Iteration 18 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:52,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:52,550 INFO L82 PathProgramCache]: Analyzing trace with hash -2028484339, now seen corresponding path program 1 times [2020-12-22 12:58:52,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:52,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170879373] [2020-12-22 12:58:52,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:52,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:52,975 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-12-22 12:58:52,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170879373] [2020-12-22 12:58:52,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:52,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:52,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362179075] [2020-12-22 12:58:52,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:52,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:52,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:52,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:52,978 INFO L87 Difference]: Start difference. First operand 4892 states and 7076 transitions. Second operand 4 states. [2020-12-22 12:58:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:53,507 INFO L93 Difference]: Finished difference Result 10085 states and 14571 transitions. [2020-12-22 12:58:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:53,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-12-22 12:58:53,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:53,524 INFO L225 Difference]: With dead ends: 10085 [2020-12-22 12:58:53,524 INFO L226 Difference]: Without dead ends: 5196 [2020-12-22 12:58:53,534 INFO L677 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 [2020-12-22 12:58:53,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5196 states. [2020-12-22 12:58:53,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5196 to 4916. [2020-12-22 12:58:53,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4916 states. [2020-12-22 12:58:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4916 states to 4916 states and 7100 transitions. [2020-12-22 12:58:53,890 INFO L78 Accepts]: Start accepts. Automaton has 4916 states and 7100 transitions. Word has length 296 [2020-12-22 12:58:53,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:53,891 INFO L481 AbstractCegarLoop]: Abstraction has 4916 states and 7100 transitions. [2020-12-22 12:58:53,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4916 states and 7100 transitions. [2020-12-22 12:58:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-12-22 12:58:53,907 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:53,907 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:53,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-22 12:58:53,907 INFO L429 AbstractCegarLoop]: === Iteration 19 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:53,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:53,908 INFO L82 PathProgramCache]: Analyzing trace with hash -80620851, now seen corresponding path program 1 times [2020-12-22 12:58:53,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:53,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77068018] [2020-12-22 12:58:53,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:54,353 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-12-22 12:58:54,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77068018] [2020-12-22 12:58:54,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:54,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:54,354 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621799511] [2020-12-22 12:58:54,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:54,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:54,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:54,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:54,356 INFO L87 Difference]: Start difference. First operand 4916 states and 7100 transitions. Second operand 4 states. [2020-12-22 12:58:54,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:54,881 INFO L93 Difference]: Finished difference Result 10065 states and 14523 transitions. [2020-12-22 12:58:54,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:54,882 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-12-22 12:58:54,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:54,898 INFO L225 Difference]: With dead ends: 10065 [2020-12-22 12:58:54,898 INFO L226 Difference]: Without dead ends: 5152 [2020-12-22 12:58:54,909 INFO L677 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 [2020-12-22 12:58:54,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5152 states. [2020-12-22 12:58:55,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5152 to 4940. [2020-12-22 12:58:55,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4940 states. [2020-12-22 12:58:55,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4940 states to 4940 states and 7124 transitions. [2020-12-22 12:58:55,142 INFO L78 Accepts]: Start accepts. Automaton has 4940 states and 7124 transitions. Word has length 296 [2020-12-22 12:58:55,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:55,142 INFO L481 AbstractCegarLoop]: Abstraction has 4940 states and 7124 transitions. [2020-12-22 12:58:55,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:55,142 INFO L276 IsEmpty]: Start isEmpty. Operand 4940 states and 7124 transitions. [2020-12-22 12:58:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-12-22 12:58:55,157 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:55,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:55,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-22 12:58:55,158 INFO L429 AbstractCegarLoop]: === Iteration 20 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:55,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:55,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1981239027, now seen corresponding path program 1 times [2020-12-22 12:58:55,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:55,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905695629] [2020-12-22 12:58:55,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:55,618 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-12-22 12:58:55,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905695629] [2020-12-22 12:58:55,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:55,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:55,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412678108] [2020-12-22 12:58:55,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:55,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:55,624 INFO L87 Difference]: Start difference. First operand 4940 states and 7124 transitions. Second operand 4 states. [2020-12-22 12:58:56,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:56,041 INFO L93 Difference]: Finished difference Result 9965 states and 14372 transitions. [2020-12-22 12:58:56,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:56,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 296 [2020-12-22 12:58:56,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:56,056 INFO L225 Difference]: With dead ends: 9965 [2020-12-22 12:58:56,057 INFO L226 Difference]: Without dead ends: 5028 [2020-12-22 12:58:56,065 INFO L677 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 [2020-12-22 12:58:56,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2020-12-22 12:58:56,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4948. [2020-12-22 12:58:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4948 states. [2020-12-22 12:58:56,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4948 states to 4948 states and 7132 transitions. [2020-12-22 12:58:56,406 INFO L78 Accepts]: Start accepts. Automaton has 4948 states and 7132 transitions. Word has length 296 [2020-12-22 12:58:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:56,407 INFO L481 AbstractCegarLoop]: Abstraction has 4948 states and 7132 transitions. [2020-12-22 12:58:56,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:56,407 INFO L276 IsEmpty]: Start isEmpty. Operand 4948 states and 7132 transitions. [2020-12-22 12:58:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2020-12-22 12:58:56,431 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:56,431 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:56,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-22 12:58:56,431 INFO L429 AbstractCegarLoop]: === Iteration 21 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:56,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:56,432 INFO L82 PathProgramCache]: Analyzing trace with hash -2147047495, now seen corresponding path program 1 times [2020-12-22 12:58:56,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:56,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80440060] [2020-12-22 12:58:56,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-12-22 12:58:56,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80440060] [2020-12-22 12:58:56,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:56,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 12:58:56,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063127464] [2020-12-22 12:58:56,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 12:58:56,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:56,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 12:58:56,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 12:58:56,921 INFO L87 Difference]: Start difference. First operand 4948 states and 7132 transitions. Second operand 4 states. [2020-12-22 12:58:57,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:57,284 INFO L93 Difference]: Finished difference Result 9917 states and 14301 transitions. [2020-12-22 12:58:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:58:57,285 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 318 [2020-12-22 12:58:57,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:57,299 INFO L225 Difference]: With dead ends: 9917 [2020-12-22 12:58:57,299 INFO L226 Difference]: Without dead ends: 4972 [2020-12-22 12:58:57,306 INFO L677 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 [2020-12-22 12:58:57,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4972 states. [2020-12-22 12:58:57,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4972 to 4956. [2020-12-22 12:58:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4956 states. [2020-12-22 12:58:57,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4956 states to 4956 states and 7140 transitions. [2020-12-22 12:58:57,582 INFO L78 Accepts]: Start accepts. Automaton has 4956 states and 7140 transitions. Word has length 318 [2020-12-22 12:58:57,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:57,583 INFO L481 AbstractCegarLoop]: Abstraction has 4956 states and 7140 transitions. [2020-12-22 12:58:57,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 12:58:57,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4956 states and 7140 transitions. [2020-12-22 12:58:57,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-12-22 12:58:57,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:57,602 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:58:57,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-22 12:58:57,603 INFO L429 AbstractCegarLoop]: === Iteration 22 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:57,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:57,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1979754035, now seen corresponding path program 1 times [2020-12-22 12:58:57,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:57,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385139589] [2020-12-22 12:58:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:57,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:58,135 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-12-22 12:58:58,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385139589] [2020-12-22 12:58:58,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 12:58:58,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 12:58:58,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374343974] [2020-12-22 12:58:58,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 12:58:58,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:58:58,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 12:58:58,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 12:58:58,139 INFO L87 Difference]: Start difference. First operand 4956 states and 7140 transitions. Second operand 3 states. [2020-12-22 12:58:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:58:58,353 INFO L93 Difference]: Finished difference Result 9913 states and 14297 transitions. [2020-12-22 12:58:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 12:58:58,354 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 340 [2020-12-22 12:58:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:58:58,379 INFO L225 Difference]: With dead ends: 9913 [2020-12-22 12:58:58,380 INFO L226 Difference]: Without dead ends: 4960 [2020-12-22 12:58:58,387 INFO L677 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 [2020-12-22 12:58:58,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2020-12-22 12:58:58,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4960. [2020-12-22 12:58:58,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4960 states. [2020-12-22 12:58:58,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4960 states to 4960 states and 7144 transitions. [2020-12-22 12:58:58,739 INFO L78 Accepts]: Start accepts. Automaton has 4960 states and 7144 transitions. Word has length 340 [2020-12-22 12:58:58,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:58:58,740 INFO L481 AbstractCegarLoop]: Abstraction has 4960 states and 7144 transitions. [2020-12-22 12:58:58,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 12:58:58,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4960 states and 7144 transitions. [2020-12-22 12:58:58,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-12-22 12:58:58,752 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:58:58,753 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-22 12:58:58,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-22 12:58:58,753 INFO L429 AbstractCegarLoop]: === Iteration 23 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:58:58,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:58:58,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1424635705, now seen corresponding path program 1 times [2020-12-22 12:58:58,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:58:58,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209734123] [2020-12-22 12:58:58,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:58:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:58:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-22 12:58:59,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209734123] [2020-12-22 12:58:59,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506459862] [2020-12-22 12:58:59,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:01,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:01,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 6340 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 12:59:01,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 76 proven. 7 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-22 12:59:01,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 12:59:01,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-12-22 12:59:01,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480772765] [2020-12-22 12:59:01,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 12:59:01,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:01,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 12:59:01,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:59:01,881 INFO L87 Difference]: Start difference. First operand 4960 states and 7144 transitions. Second operand 6 states. [2020-12-22 12:59:02,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:02,295 INFO L93 Difference]: Finished difference Result 10213 states and 14703 transitions. [2020-12-22 12:59:02,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 12:59:02,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 342 [2020-12-22 12:59:02,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:02,309 INFO L225 Difference]: With dead ends: 10213 [2020-12-22 12:59:02,310 INFO L226 Difference]: Without dead ends: 5256 [2020-12-22 12:59:02,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:59:02,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5256 states. [2020-12-22 12:59:02,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5256 to 5256. [2020-12-22 12:59:02,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2020-12-22 12:59:02,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 7544 transitions. [2020-12-22 12:59:02,590 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 7544 transitions. Word has length 342 [2020-12-22 12:59:02,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:02,591 INFO L481 AbstractCegarLoop]: Abstraction has 5256 states and 7544 transitions. [2020-12-22 12:59:02,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 12:59:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 7544 transitions. [2020-12-22 12:59:02,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-12-22 12:59:02,605 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:02,605 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:02,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-22 12:59:02,820 INFO L429 AbstractCegarLoop]: === Iteration 24 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:02,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1275003757, now seen corresponding path program 2 times [2020-12-22 12:59:02,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:02,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012523336] [2020-12-22 12:59:02,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:03,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:03,624 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 12:59:03,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012523336] [2020-12-22 12:59:03,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795447537] [2020-12-22 12:59:03,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:05,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 12:59:05,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 12:59:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 3874 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 12:59:05,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:05,666 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 172 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-12-22 12:59:05,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:59:05,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2020-12-22 12:59:05,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668386083] [2020-12-22 12:59:05,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:59:05,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:05,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:59:05,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-22 12:59:05,669 INFO L87 Difference]: Start difference. First operand 5256 states and 7544 transitions. Second operand 5 states. [2020-12-22 12:59:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:06,029 INFO L93 Difference]: Finished difference Result 10557 states and 15147 transitions. [2020-12-22 12:59:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 12:59:06,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2020-12-22 12:59:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:06,056 INFO L225 Difference]: With dead ends: 10557 [2020-12-22 12:59:06,056 INFO L226 Difference]: Without dead ends: 5304 [2020-12-22 12:59:06,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:59:06,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2020-12-22 12:59:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5256. [2020-12-22 12:59:06,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5256 states. [2020-12-22 12:59:06,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 7544 transitions. [2020-12-22 12:59:06,327 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 7544 transitions. Word has length 352 [2020-12-22 12:59:06,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:06,327 INFO L481 AbstractCegarLoop]: Abstraction has 5256 states and 7544 transitions. [2020-12-22 12:59:06,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:59:06,327 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 7544 transitions. [2020-12-22 12:59:06,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-12-22 12:59:06,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:06,339 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:06,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:06,555 INFO L429 AbstractCegarLoop]: === Iteration 25 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:06,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:06,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1218771341, now seen corresponding path program 1 times [2020-12-22 12:59:06,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:06,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277515298] [2020-12-22 12:59:06,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:07,287 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 12:59:07,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277515298] [2020-12-22 12:59:07,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776774119] [2020-12-22 12:59:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:09,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 6430 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-22 12:59:09,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 181 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-22 12:59:09,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 12:59:09,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2020-12-22 12:59:09,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980267953] [2020-12-22 12:59:09,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 12:59:09,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:09,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 12:59:09,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:59:09,815 INFO L87 Difference]: Start difference. First operand 5256 states and 7544 transitions. Second operand 6 states. [2020-12-22 12:59:10,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:10,061 INFO L93 Difference]: Finished difference Result 10513 states and 15105 transitions. [2020-12-22 12:59:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 12:59:10,062 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 352 [2020-12-22 12:59:10,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:10,078 INFO L225 Difference]: With dead ends: 10513 [2020-12-22 12:59:10,078 INFO L226 Difference]: Without dead ends: 5260 [2020-12-22 12:59:10,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-12-22 12:59:10,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5260 states. [2020-12-22 12:59:10,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5260 to 5260. [2020-12-22 12:59:10,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-12-22 12:59:10,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7548 transitions. [2020-12-22 12:59:10,333 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7548 transitions. Word has length 352 [2020-12-22 12:59:10,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:10,333 INFO L481 AbstractCegarLoop]: Abstraction has 5260 states and 7548 transitions. [2020-12-22 12:59:10,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 12:59:10,334 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7548 transitions. [2020-12-22 12:59:10,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-12-22 12:59:10,344 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:10,344 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:10,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-22 12:59:10,557 INFO L429 AbstractCegarLoop]: === Iteration 26 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:10,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:10,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1444645041, now seen corresponding path program 2 times [2020-12-22 12:59:10,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:10,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495177058] [2020-12-22 12:59:10,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:10,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:11,651 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 12:59:11,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495177058] [2020-12-22 12:59:11,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499402014] [2020-12-22 12:59:11,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:13,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 12:59:13,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 12:59:13,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 3891 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 12:59:13,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:13,710 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-12-22 12:59:13,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:59:13,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-12-22 12:59:13,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439888741] [2020-12-22 12:59:13,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:59:13,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:13,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:59:13,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 12:59:13,712 INFO L87 Difference]: Start difference. First operand 5260 states and 7548 transitions. Second operand 5 states. [2020-12-22 12:59:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:14,081 INFO L93 Difference]: Finished difference Result 10605 states and 15195 transitions. [2020-12-22 12:59:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 12:59:14,082 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 354 [2020-12-22 12:59:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:14,096 INFO L225 Difference]: With dead ends: 10605 [2020-12-22 12:59:14,096 INFO L226 Difference]: Without dead ends: 5348 [2020-12-22 12:59:14,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-22 12:59:14,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2020-12-22 12:59:14,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5260. [2020-12-22 12:59:14,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5260 states. [2020-12-22 12:59:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7548 transitions. [2020-12-22 12:59:14,342 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7548 transitions. Word has length 354 [2020-12-22 12:59:14,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:14,342 INFO L481 AbstractCegarLoop]: Abstraction has 5260 states and 7548 transitions. [2020-12-22 12:59:14,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:59:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7548 transitions. [2020-12-22 12:59:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2020-12-22 12:59:14,352 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:14,354 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:14,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:14,568 INFO L429 AbstractCegarLoop]: === Iteration 27 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:14,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:14,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1444059387, now seen corresponding path program 1 times [2020-12-22 12:59:14,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:14,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989594613] [2020-12-22 12:59:14,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 12:59:15,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989594613] [2020-12-22 12:59:15,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549761883] [2020-12-22 12:59:15,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:17,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:17,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 6466 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-22 12:59:17,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 186 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-12-22 12:59:17,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 12:59:17,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-12-22 12:59:17,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543657245] [2020-12-22 12:59:17,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 12:59:17,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 12:59:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 12:59:17,704 INFO L87 Difference]: Start difference. First operand 5260 states and 7548 transitions. Second operand 8 states. [2020-12-22 12:59:17,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:17,994 INFO L93 Difference]: Finished difference Result 10521 states and 15113 transitions. [2020-12-22 12:59:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 12:59:17,995 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 354 [2020-12-22 12:59:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:18,010 INFO L225 Difference]: With dead ends: 10521 [2020-12-22 12:59:18,011 INFO L226 Difference]: Without dead ends: 5264 [2020-12-22 12:59:18,018 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 352 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 12:59:18,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5264 states. [2020-12-22 12:59:18,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5264 to 5264. [2020-12-22 12:59:18,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5264 states. [2020-12-22 12:59:18,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5264 states to 5264 states and 7552 transitions. [2020-12-22 12:59:18,239 INFO L78 Accepts]: Start accepts. Automaton has 5264 states and 7552 transitions. Word has length 354 [2020-12-22 12:59:18,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:18,239 INFO L481 AbstractCegarLoop]: Abstraction has 5264 states and 7552 transitions. [2020-12-22 12:59:18,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 12:59:18,239 INFO L276 IsEmpty]: Start isEmpty. Operand 5264 states and 7552 transitions. [2020-12-22 12:59:18,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2020-12-22 12:59:18,248 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:18,249 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:18,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-22 12:59:18,463 INFO L429 AbstractCegarLoop]: === Iteration 28 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:18,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:18,464 INFO L82 PathProgramCache]: Analyzing trace with hash 645896557, now seen corresponding path program 2 times [2020-12-22 12:59:18,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:18,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86306266] [2020-12-22 12:59:18,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:19,236 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 193 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-22 12:59:19,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86306266] [2020-12-22 12:59:19,237 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740536854] [2020-12-22 12:59:19,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:32,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 12:59:32,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 12:59:32,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 3903 conjuncts, 73 conjunts are in the unsatisfiable core [2020-12-22 12:59:32,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:32,987 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-12-22 12:59:32,987 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:59:32,987 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2020-12-22 12:59:32,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850376632] [2020-12-22 12:59:32,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 12:59:32,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:32,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 12:59:32,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-12-22 12:59:32,989 INFO L87 Difference]: Start difference. First operand 5264 states and 7552 transitions. Second operand 7 states. [2020-12-22 12:59:33,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:33,882 INFO L93 Difference]: Finished difference Result 14005 states and 19833 transitions. [2020-12-22 12:59:33,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 12:59:33,883 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 356 [2020-12-22 12:59:33,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:33,907 INFO L225 Difference]: With dead ends: 14005 [2020-12-22 12:59:33,907 INFO L226 Difference]: Without dead ends: 8744 [2020-12-22 12:59:33,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 354 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-12-22 12:59:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8744 states. [2020-12-22 12:59:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8744 to 5284. [2020-12-22 12:59:34,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5284 states. [2020-12-22 12:59:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 7572 transitions. [2020-12-22 12:59:34,237 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 7572 transitions. Word has length 356 [2020-12-22 12:59:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:34,237 INFO L481 AbstractCegarLoop]: Abstraction has 5284 states and 7572 transitions. [2020-12-22 12:59:34,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 12:59:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 7572 transitions. [2020-12-22 12:59:34,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-12-22 12:59:34,246 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:34,247 INFO L422 BasicCegarLoop]: trace histogram [6, 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] [2020-12-22 12:59:34,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-22 12:59:34,461 INFO L429 AbstractCegarLoop]: === Iteration 29 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:34,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:34,462 INFO L82 PathProgramCache]: Analyzing trace with hash -467262397, now seen corresponding path program 1 times [2020-12-22 12:59:34,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:34,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028319927] [2020-12-22 12:59:34,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-22 12:59:35,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028319927] [2020-12-22 12:59:35,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118410838] [2020-12-22 12:59:35,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:37,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 6538 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-22 12:59:37,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:37,714 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 196 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-12-22 12:59:37,714 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 12:59:37,715 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2020-12-22 12:59:37,715 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107201226] [2020-12-22 12:59:37,716 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 12:59:37,716 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:37,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 12:59:37,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:59:37,717 INFO L87 Difference]: Start difference. First operand 5284 states and 7572 transitions. Second operand 10 states. [2020-12-22 12:59:38,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:38,027 INFO L93 Difference]: Finished difference Result 10569 states and 15161 transitions. [2020-12-22 12:59:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 12:59:38,028 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 362 [2020-12-22 12:59:38,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:38,042 INFO L225 Difference]: With dead ends: 10569 [2020-12-22 12:59:38,042 INFO L226 Difference]: Without dead ends: 5288 [2020-12-22 12:59:38,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:59:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5288 states. [2020-12-22 12:59:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5288 to 5288. [2020-12-22 12:59:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5288 states. [2020-12-22 12:59:38,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 7576 transitions. [2020-12-22 12:59:38,329 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 7576 transitions. Word has length 362 [2020-12-22 12:59:38,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:38,330 INFO L481 AbstractCegarLoop]: Abstraction has 5288 states and 7576 transitions. [2020-12-22 12:59:38,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 12:59:38,330 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 7576 transitions. [2020-12-22 12:59:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 365 [2020-12-22 12:59:38,341 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:38,343 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 12:59:38,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-22 12:59:38,558 INFO L429 AbstractCegarLoop]: === Iteration 30 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 12:59:38,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 12:59:38,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1271709043, now seen corresponding path program 2 times [2020-12-22 12:59:38,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 12:59:38,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434967929] [2020-12-22 12:59:38,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 12:59:38,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 12:59:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 205 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-22 12:59:39,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434967929] [2020-12-22 12:59:39,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773899771] [2020-12-22 12:59:39,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 12:59:58,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 12:59:58,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 12:59:58,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 3933 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 12:59:58,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 12:59:59,154 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-12-22 12:59:59,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 12:59:59,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2020-12-22 12:59:59,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378829442] [2020-12-22 12:59:59,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 12:59:59,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 12:59:59,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 12:59:59,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 12:59:59,157 INFO L87 Difference]: Start difference. First operand 5288 states and 7576 transitions. Second operand 5 states. [2020-12-22 12:59:59,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 12:59:59,600 INFO L93 Difference]: Finished difference Result 11777 states and 16785 transitions. [2020-12-22 12:59:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 12:59:59,600 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 364 [2020-12-22 12:59:59,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 12:59:59,614 INFO L225 Difference]: With dead ends: 11777 [2020-12-22 12:59:59,614 INFO L226 Difference]: Without dead ends: 6492 [2020-12-22 12:59:59,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-12-22 12:59:59,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2020-12-22 12:59:59,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 5300. [2020-12-22 12:59:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5300 states. [2020-12-22 12:59:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5300 states to 5300 states and 7588 transitions. [2020-12-22 12:59:59,894 INFO L78 Accepts]: Start accepts. Automaton has 5300 states and 7588 transitions. Word has length 364 [2020-12-22 12:59:59,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 12:59:59,894 INFO L481 AbstractCegarLoop]: Abstraction has 5300 states and 7588 transitions. [2020-12-22 12:59:59,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 12:59:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5300 states and 7588 transitions. [2020-12-22 12:59:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-12-22 12:59:59,908 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 12:59:59,909 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:00,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:00,110 INFO L429 AbstractCegarLoop]: === Iteration 31 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:00,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:00,111 INFO L82 PathProgramCache]: Analyzing trace with hash 289046485, now seen corresponding path program 1 times [2020-12-22 13:00:00,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:00,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141181264] [2020-12-22 13:00:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:01,053 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-22 13:00:01,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141181264] [2020-12-22 13:00:01,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49513459] [2020-12-22 13:00:01,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:03,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 6610 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 13:00:03,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:00:03,582 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2020-12-22 13:00:03,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:00:03,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2020-12-22 13:00:03,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167725881] [2020-12-22 13:00:03,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-22 13:00:03,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:03,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-22 13:00:03,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:00:03,585 INFO L87 Difference]: Start difference. First operand 5300 states and 7588 transitions. Second operand 12 states. [2020-12-22 13:00:03,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:03,794 INFO L93 Difference]: Finished difference Result 10601 states and 15193 transitions. [2020-12-22 13:00:03,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 13:00:03,796 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 370 [2020-12-22 13:00:03,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:03,807 INFO L225 Difference]: With dead ends: 10601 [2020-12-22 13:00:03,807 INFO L226 Difference]: Without dead ends: 5304 [2020-12-22 13:00:03,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:00:03,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5304 states. [2020-12-22 13:00:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5304 to 5304. [2020-12-22 13:00:04,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5304 states. [2020-12-22 13:00:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 7592 transitions. [2020-12-22 13:00:04,222 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 7592 transitions. Word has length 370 [2020-12-22 13:00:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:04,223 INFO L481 AbstractCegarLoop]: Abstraction has 5304 states and 7592 transitions. [2020-12-22 13:00:04,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-22 13:00:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 7592 transitions. [2020-12-22 13:00:04,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-12-22 13:00:04,232 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:04,232 INFO L422 BasicCegarLoop]: trace histogram [10, 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] [2020-12-22 13:00:04,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-22 13:00:04,446 INFO L429 AbstractCegarLoop]: === Iteration 32 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:04,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:04,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1950431123, now seen corresponding path program 2 times [2020-12-22 13:00:04,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:04,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023559695] [2020-12-22 13:00:04,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:04,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 219 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 13:00:05,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023559695] [2020-12-22 13:00:05,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895269743] [2020-12-22 13:00:05,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:17,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:00:17,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:00:18,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 3963 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-22 13:00:18,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:00:18,635 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2020-12-22 13:00:18,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:00:18,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2020-12-22 13:00:18,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318464413] [2020-12-22 13:00:18,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:00:18,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:18,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:00:18,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-12-22 13:00:18,643 INFO L87 Difference]: Start difference. First operand 5304 states and 7592 transitions. Second operand 5 states. [2020-12-22 13:00:19,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:19,120 INFO L93 Difference]: Finished difference Result 11813 states and 16813 transitions. [2020-12-22 13:00:19,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:00:19,120 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 372 [2020-12-22 13:00:19,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:19,133 INFO L225 Difference]: With dead ends: 11813 [2020-12-22 13:00:19,134 INFO L226 Difference]: Without dead ends: 6512 [2020-12-22 13:00:19,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-22 13:00:19,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6512 states. [2020-12-22 13:00:19,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6512 to 5328. [2020-12-22 13:00:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5328 states. [2020-12-22 13:00:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 7616 transitions. [2020-12-22 13:00:19,446 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 7616 transitions. Word has length 372 [2020-12-22 13:00:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:19,446 INFO L481 AbstractCegarLoop]: Abstraction has 5328 states and 7616 transitions. [2020-12-22 13:00:19,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:00:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 7616 transitions. [2020-12-22 13:00:19,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-12-22 13:00:19,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:19,458 INFO L422 BasicCegarLoop]: trace histogram [10, 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] [2020-12-22 13:00:19,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:19,674 INFO L429 AbstractCegarLoop]: === Iteration 33 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:19,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:19,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1913996045, now seen corresponding path program 1 times [2020-12-22 13:00:19,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:19,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140483514] [2020-12-22 13:00:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:19,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:20,522 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 225 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 13:00:20,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140483514] [2020-12-22 13:00:20,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253814136] [2020-12-22 13:00:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:22,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 6742 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 13:00:22,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:00:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 225 proven. 15 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-22 13:00:23,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:00:23,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-12-22 13:00:23,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608739660] [2020-12-22 13:00:23,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-22 13:00:23,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:23,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-22 13:00:23,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:00:23,163 INFO L87 Difference]: Start difference. First operand 5328 states and 7616 transitions. Second operand 14 states. [2020-12-22 13:00:23,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:23,468 INFO L93 Difference]: Finished difference Result 10657 states and 15249 transitions. [2020-12-22 13:00:23,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:00:23,469 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 384 [2020-12-22 13:00:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:23,479 INFO L225 Difference]: With dead ends: 10657 [2020-12-22 13:00:23,479 INFO L226 Difference]: Without dead ends: 5332 [2020-12-22 13:00:23,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 379 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=106, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:00:23,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5332 states. [2020-12-22 13:00:23,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5332 to 5332. [2020-12-22 13:00:23,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5332 states. [2020-12-22 13:00:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5332 states to 5332 states and 7620 transitions. [2020-12-22 13:00:23,784 INFO L78 Accepts]: Start accepts. Automaton has 5332 states and 7620 transitions. Word has length 384 [2020-12-22 13:00:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:23,785 INFO L481 AbstractCegarLoop]: Abstraction has 5332 states and 7620 transitions. [2020-12-22 13:00:23,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-22 13:00:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 5332 states and 7620 transitions. [2020-12-22 13:00:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-12-22 13:00:23,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:23,795 INFO L422 BasicCegarLoop]: trace histogram [12, 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] [2020-12-22 13:00:24,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-22 13:00:24,010 INFO L429 AbstractCegarLoop]: === Iteration 34 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:24,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1503888487, now seen corresponding path program 2 times [2020-12-22 13:00:24,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:24,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459800159] [2020-12-22 13:00:24,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 238 proven. 21 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-12-22 13:00:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459800159] [2020-12-22 13:00:24,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676854863] [2020-12-22 13:00:24,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:45,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:00:45,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:00:45,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 4023 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 13:00:45,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:00:45,523 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-12-22 13:00:45,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:00:45,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2020-12-22 13:00:45,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255493440] [2020-12-22 13:00:45,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 13:00:45,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:45,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 13:00:45,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-12-22 13:00:45,525 INFO L87 Difference]: Start difference. First operand 5332 states and 7620 transitions. Second operand 5 states. [2020-12-22 13:00:45,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:45,983 INFO L93 Difference]: Finished difference Result 11845 states and 16837 transitions. [2020-12-22 13:00:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 13:00:45,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 386 [2020-12-22 13:00:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:45,993 INFO L225 Difference]: With dead ends: 11845 [2020-12-22 13:00:45,993 INFO L226 Difference]: Without dead ends: 6516 [2020-12-22 13:00:46,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 385 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-12-22 13:00:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6516 states. [2020-12-22 13:00:46,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6516 to 5344. [2020-12-22 13:00:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5344 states. [2020-12-22 13:00:46,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5344 states to 5344 states and 7632 transitions. [2020-12-22 13:00:46,222 INFO L78 Accepts]: Start accepts. Automaton has 5344 states and 7632 transitions. Word has length 386 [2020-12-22 13:00:46,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:46,223 INFO L481 AbstractCegarLoop]: Abstraction has 5344 states and 7632 transitions. [2020-12-22 13:00:46,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 13:00:46,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5344 states and 7632 transitions. [2020-12-22 13:00:46,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-12-22 13:00:46,231 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:46,231 INFO L422 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:46,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:46,446 INFO L429 AbstractCegarLoop]: === Iteration 35 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:46,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1010249939, now seen corresponding path program 1 times [2020-12-22 13:00:46,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:46,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040060203] [2020-12-22 13:00:46,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:46,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 241 proven. 21 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-12-22 13:00:47,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040060203] [2020-12-22 13:00:47,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385287992] [2020-12-22 13:00:47,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:00:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:49,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 6814 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 13:00:49,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:00:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 241 proven. 21 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-12-22 13:00:49,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:00:49,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2020-12-22 13:00:49,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20267201] [2020-12-22 13:00:49,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-22 13:00:49,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:00:49,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-22 13:00:49,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:00:49,799 INFO L87 Difference]: Start difference. First operand 5344 states and 7632 transitions. Second operand 16 states. [2020-12-22 13:00:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:00:50,155 INFO L93 Difference]: Finished difference Result 10689 states and 15281 transitions. [2020-12-22 13:00:50,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 13:00:50,155 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 392 [2020-12-22 13:00:50,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:00:50,162 INFO L225 Difference]: With dead ends: 10689 [2020-12-22 13:00:50,162 INFO L226 Difference]: Without dead ends: 5348 [2020-12-22 13:00:50,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 386 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:00:50,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2020-12-22 13:00:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5348. [2020-12-22 13:00:50,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5348 states. [2020-12-22 13:00:50,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7636 transitions. [2020-12-22 13:00:50,371 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7636 transitions. Word has length 392 [2020-12-22 13:00:50,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:00:50,372 INFO L481 AbstractCegarLoop]: Abstraction has 5348 states and 7636 transitions. [2020-12-22 13:00:50,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-22 13:00:50,372 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7636 transitions. [2020-12-22 13:00:50,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-12-22 13:00:50,378 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:00:50,378 INFO L422 BasicCegarLoop]: trace histogram [14, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 13:00:50,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-22 13:00:50,579 INFO L429 AbstractCegarLoop]: === Iteration 36 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:00:50,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:00:50,580 INFO L82 PathProgramCache]: Analyzing trace with hash -796629727, now seen corresponding path program 2 times [2020-12-22 13:00:50,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:00:50,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725470016] [2020-12-22 13:00:50,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:00:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:00:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 256 proven. 28 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-22 13:00:51,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725470016] [2020-12-22 13:00:51,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1458229495] [2020-12-22 13:00:51,216 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:01:07,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 13:01:07,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 13:01:07,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 4053 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-22 13:01:07,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:01:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-22 13:01:08,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 13:01:08,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2020-12-22 13:01:08,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974303754] [2020-12-22 13:01:08,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 13:01:08,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:08,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 13:01:08,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-22 13:01:08,559 INFO L87 Difference]: Start difference. First operand 5348 states and 7636 transitions. Second operand 8 states. [2020-12-22 13:01:09,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:01:09,268 INFO L93 Difference]: Finished difference Result 11817 states and 16789 transitions. [2020-12-22 13:01:09,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 13:01:09,269 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2020-12-22 13:01:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:01:09,280 INFO L225 Difference]: With dead ends: 11817 [2020-12-22 13:01:09,280 INFO L226 Difference]: Without dead ends: 6472 [2020-12-22 13:01:09,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 410 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-12-22 13:01:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6472 states. [2020-12-22 13:01:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6472 to 5372. [2020-12-22 13:01:09,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5372 states. [2020-12-22 13:01:09,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7660 transitions. [2020-12-22 13:01:09,524 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7660 transitions. Word has length 394 [2020-12-22 13:01:09,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:01:09,524 INFO L481 AbstractCegarLoop]: Abstraction has 5372 states and 7660 transitions. [2020-12-22 13:01:09,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 13:01:09,524 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7660 transitions. [2020-12-22 13:01:09,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-12-22 13:01:09,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:09,533 INFO L422 BasicCegarLoop]: trace histogram [14, 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] [2020-12-22 13:01:09,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:01:09,748 INFO L429 AbstractCegarLoop]: === Iteration 37 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:01:09,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:09,749 INFO L82 PathProgramCache]: Analyzing trace with hash -2050138355, now seen corresponding path program 1 times [2020-12-22 13:01:09,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:09,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796664806] [2020-12-22 13:01:09,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:10,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:10,512 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 259 proven. 28 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-22 13:01:10,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796664806] [2020-12-22 13:01:10,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750155766] [2020-12-22 13:01:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 13:01:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:12,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 6886 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 13:01:12,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 13:01:13,235 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 259 proven. 28 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-22 13:01:13,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-22 13:01:13,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-12-22 13:01:13,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561420132] [2020-12-22 13:01:13,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-12-22 13:01:13,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 13:01:13,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-12-22 13:01:13,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:01:13,237 INFO L87 Difference]: Start difference. First operand 5372 states and 7660 transitions. Second operand 18 states. [2020-12-22 13:01:13,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 13:01:13,529 INFO L93 Difference]: Finished difference Result 10745 states and 15337 transitions. [2020-12-22 13:01:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 13:01:13,530 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 400 [2020-12-22 13:01:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 13:01:13,541 INFO L225 Difference]: With dead ends: 10745 [2020-12-22 13:01:13,541 INFO L226 Difference]: Without dead ends: 5376 [2020-12-22 13:01:13,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=181, Unknown=0, NotChecked=0, Total=306 [2020-12-22 13:01:13,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2020-12-22 13:01:13,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5376. [2020-12-22 13:01:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5376 states. [2020-12-22 13:01:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2020-12-22 13:01:13,872 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 400 [2020-12-22 13:01:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 13:01:13,872 INFO L481 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2020-12-22 13:01:13,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-12-22 13:01:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2020-12-22 13:01:13,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2020-12-22 13:01:13,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 13:01:13,882 INFO L422 BasicCegarLoop]: trace histogram [16, 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] [2020-12-22 13:01:14,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-22 13:01:14,096 INFO L429 AbstractCegarLoop]: === Iteration 38 === [backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 13:01:14,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 13:01:14,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1313272969, now seen corresponding path program 2 times [2020-12-22 13:01:14,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 13:01:14,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083243233] [2020-12-22 13:01:14,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 13:01:14,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 13:01:14,938 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 276 proven. 36 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-12-22 13:01:14,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083243233] [2020-12-22 13:01:14,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223715592] [2020-12-22 13:01:14,939 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true