./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:22:17,988 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:22:17,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:22:18,051 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:22:18,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:22:18,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:22:18,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:22:18,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:22:18,059 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:22:18,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:22:18,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:22:18,064 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:22:18,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:22:18,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:22:18,067 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:22:18,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:22:18,071 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:22:18,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:22:18,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:22:18,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:22:18,078 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:22:18,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:22:18,080 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:22:18,081 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:22:18,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:22:18,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:22:18,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:22:18,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:22:18,088 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:22:18,088 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:22:18,089 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:22:18,089 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:22:18,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:22:18,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:22:18,092 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:22:18,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:22:18,093 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:22:18,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:22:18,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:22:18,094 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:22:18,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:22:18,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:22:18,120 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:22:18,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:22:18,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:22:18,121 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:22:18,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:22:18,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:22:18,122 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:22:18,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:22:18,122 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:22:18,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:22:18,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:22:18,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:22:18,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:22:18,123 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:22:18,124 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:22:18,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:22:18,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:22:18,124 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:22:18,124 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:22:18,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:22:18,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:22:18,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:22:18,126 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:22:18,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:22:18,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-11-07 12:22:18,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:22:18,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:22:18,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:22:18,358 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:22:18,359 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:22:18,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 12:22:18,403 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51002e825/711372976dcc4443a27b6c06909b11d1/FLAGce0b224d1 [2021-11-07 12:22:18,961 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:22:18,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 12:22:18,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51002e825/711372976dcc4443a27b6c06909b11d1/FLAGce0b224d1 [2021-11-07 12:22:19,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51002e825/711372976dcc4443a27b6c06909b11d1 [2021-11-07 12:22:19,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:22:19,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:22:19,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:22:19,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:22:19,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:22:19,170 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:22:19" (1/1) ... [2021-11-07 12:22:19,171 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628c229c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:19, skipping insertion in model container [2021-11-07 12:22:19,172 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:22:19" (1/1) ... [2021-11-07 12:22:19,176 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:22:19,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:22:20,048 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 12:22:20,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:22:20,144 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:22:20,277 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-11-07 12:22:20,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:22:20,366 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:22:20,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20 WrapperNode [2021-11-07 12:22:20,366 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:22:20,368 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:22:20,368 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:22:20,368 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:22:20,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,629 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:22:20,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:22:20,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:22:20,631 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:22:20,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,677 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:22:20,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:22:20,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:22:20,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:22:20,876 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (1/1) ... [2021-11-07 12:22:20,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:22:20,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:22:20,937 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 12:22:20,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 12:22:20,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:22:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:22:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:22:20,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2021-11-07 12:22:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2021-11-07 12:22:20,985 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2021-11-07 12:22:20,985 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2021-11-07 12:22:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-07 12:22:20,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:22:20,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:22:20,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:22:38,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:22:38,296 INFO L299 CfgBuilder]: Removed 1265 assume(true) statements. [2021-11-07 12:22:38,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:22:38 BoogieIcfgContainer [2021-11-07 12:22:38,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:22:38,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:22:38,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:22:38,304 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:22:38,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:22:19" (1/3) ... [2021-11-07 12:22:38,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2bbb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:22:38, skipping insertion in model container [2021-11-07 12:22:38,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:22:20" (2/3) ... [2021-11-07 12:22:38,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b2bbb9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:22:38, skipping insertion in model container [2021-11-07 12:22:38,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:22:38" (3/3) ... [2021-11-07 12:22:38,307 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-11-07 12:22:38,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:22:38,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-11-07 12:22:38,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:22:38,362 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 12:22:38,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-07 12:22:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-07 12:22:38,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 12:22:38,417 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:38,418 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:38,418 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:38,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash -2065204851, now seen corresponding path program 1 times [2021-11-07 12:22:38,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:38,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743525261] [2021-11-07 12:22:38,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:38,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:38,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:38,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:38,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743525261] [2021-11-07 12:22:38,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743525261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:38,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:38,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:38,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725844354] [2021-11-07 12:22:38,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:38,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:38,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:38,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:38,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:38,946 INFO L87 Difference]: Start difference. First operand has 1461 states, 1444 states have (on average 1.479224376731302) internal successors, (2136), 1451 states have internal predecessors, (2136), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:40,996 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:41,304 INFO L93 Difference]: Finished difference Result 4354 states and 6414 transitions. [2021-11-07 12:22:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:41,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-07 12:22:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:41,321 INFO L225 Difference]: With dead ends: 4354 [2021-11-07 12:22:41,322 INFO L226 Difference]: Without dead ends: 2892 [2021-11-07 12:22:41,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:41,330 INFO L933 BasicCegarLoop]: 2121 mSDtfsCounter, 2078 mSDsluCounter, 2103 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2073.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.84ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2203.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:41,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2078 Valid, 4224 Invalid, 16 Unknown, 0 Unchecked, 14.84ms Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2203.96ms Time] [2021-11-07 12:22:41,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2021-11-07 12:22:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2888. [2021-11-07 12:22:41,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2863 states have (on average 1.4596577017114913) internal successors, (4179), 2869 states have internal predecessors, (4179), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4199 transitions. [2021-11-07 12:22:41,489 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4199 transitions. Word has length 19 [2021-11-07 12:22:41,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:41,490 INFO L470 AbstractCegarLoop]: Abstraction has 2888 states and 4199 transitions. [2021-11-07 12:22:41,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:41,494 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4199 transitions. [2021-11-07 12:22:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:22:41,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:41,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:41,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:22:41,498 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:41,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:41,499 INFO L85 PathProgramCache]: Analyzing trace with hash 677414015, now seen corresponding path program 1 times [2021-11-07 12:22:41,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:41,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884390786] [2021-11-07 12:22:41,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:41,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:41,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:41,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:41,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:41,676 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884390786] [2021-11-07 12:22:41,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884390786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:41,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:41,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:41,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007914356] [2021-11-07 12:22:41,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:41,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:41,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:41,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:41,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:41,680 INFO L87 Difference]: Start difference. First operand 2888 states and 4199 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:41,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:41,770 INFO L93 Difference]: Finished difference Result 2918 states and 4227 transitions. [2021-11-07 12:22:41,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:41,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 12:22:41,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:41,781 INFO L225 Difference]: With dead ends: 2918 [2021-11-07 12:22:41,781 INFO L226 Difference]: Without dead ends: 2903 [2021-11-07 12:22:41,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:41,784 INFO L933 BasicCegarLoop]: 2126 mSDtfsCounter, 2108 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2108 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.29ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.54ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:41,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2108 Valid, 2140 Invalid, 6 Unknown, 0 Unchecked, 4.29ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 38.54ms Time] [2021-11-07 12:22:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2903 states. [2021-11-07 12:22:41,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2903 to 2888. [2021-11-07 12:22:41,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2888 states, 2863 states have (on average 1.4593084177436255) internal successors, (4178), 2869 states have internal predecessors, (4178), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:41,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2888 states to 2888 states and 4198 transitions. [2021-11-07 12:22:41,863 INFO L78 Accepts]: Start accepts. Automaton has 2888 states and 4198 transitions. Word has length 23 [2021-11-07 12:22:41,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:41,863 INFO L470 AbstractCegarLoop]: Abstraction has 2888 states and 4198 transitions. [2021-11-07 12:22:41,864 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:41,864 INFO L276 IsEmpty]: Start isEmpty. Operand 2888 states and 4198 transitions. [2021-11-07 12:22:41,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-07 12:22:41,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:41,866 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:41,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:22:41,872 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:41,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:41,872 INFO L85 PathProgramCache]: Analyzing trace with hash 677473597, now seen corresponding path program 1 times [2021-11-07 12:22:41,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:41,873 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126076351] [2021-11-07 12:22:41,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:41,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:41,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:42,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:42,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:42,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126076351] [2021-11-07 12:22:42,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126076351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:42,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:42,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:42,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063126400] [2021-11-07 12:22:42,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:42,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:42,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:42,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:42,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:42,008 INFO L87 Difference]: Start difference. First operand 2888 states and 4198 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:44,037 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:44,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:44,172 INFO L93 Difference]: Finished difference Result 2888 states and 4198 transitions. [2021-11-07 12:22:44,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:44,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-07 12:22:44,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:44,180 INFO L225 Difference]: With dead ends: 2888 [2021-11-07 12:22:44,180 INFO L226 Difference]: Without dead ends: 2886 [2021-11-07 12:22:44,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.92ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:44,182 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 2090 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2028.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2114.34ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:44,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2090 Valid, 2110 Invalid, 2 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2114.34ms Time] [2021-11-07 12:22:44,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2886 states. [2021-11-07 12:22:44,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2886 to 2886. [2021-11-07 12:22:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2886 states, 2862 states have (on average 1.4591194968553458) internal successors, (4176), 2867 states have internal predecessors, (4176), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:44,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2886 states to 2886 states and 4196 transitions. [2021-11-07 12:22:44,245 INFO L78 Accepts]: Start accepts. Automaton has 2886 states and 4196 transitions. Word has length 23 [2021-11-07 12:22:44,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:44,246 INFO L470 AbstractCegarLoop]: Abstraction has 2886 states and 4196 transitions. [2021-11-07 12:22:44,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:44,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2886 states and 4196 transitions. [2021-11-07 12:22:44,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 12:22:44,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:44,247 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:44,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:22:44,248 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:44,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:44,248 INFO L85 PathProgramCache]: Analyzing trace with hash -473152160, now seen corresponding path program 1 times [2021-11-07 12:22:44,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:44,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41309869] [2021-11-07 12:22:44,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:44,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:44,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:44,357 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41309869] [2021-11-07 12:22:44,357 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41309869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:44,357 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:44,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:44,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354044057] [2021-11-07 12:22:44,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:44,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:44,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:44,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:44,360 INFO L87 Difference]: Start difference. First operand 2886 states and 4196 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:46,389 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:46,579 INFO L93 Difference]: Finished difference Result 2886 states and 4196 transitions. [2021-11-07 12:22:46,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-07 12:22:46,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:46,588 INFO L225 Difference]: With dead ends: 2886 [2021-11-07 12:22:46,588 INFO L226 Difference]: Without dead ends: 2884 [2021-11-07 12:22:46,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.97ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:46,592 INFO L933 BasicCegarLoop]: 2108 mSDtfsCounter, 2087 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2029.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2087 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2151.51ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:46,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2087 Valid, 2108 Invalid, 2 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2151.51ms Time] [2021-11-07 12:22:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2021-11-07 12:22:46,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2021-11-07 12:22:46,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2861 states have (on average 1.458930443900734) internal successors, (4174), 2865 states have internal predecessors, (4174), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:46,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4194 transitions. [2021-11-07 12:22:46,730 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4194 transitions. Word has length 24 [2021-11-07 12:22:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:46,730 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4194 transitions. [2021-11-07 12:22:46,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:46,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4194 transitions. [2021-11-07 12:22:46,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-07 12:22:46,732 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:46,732 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:46,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:22:46,732 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:46,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:46,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1782812249, now seen corresponding path program 1 times [2021-11-07 12:22:46,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:46,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999652816] [2021-11-07 12:22:46,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:46,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:46,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:46,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:46,850 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999652816] [2021-11-07 12:22:46,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999652816] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:46,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:46,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:46,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340652503] [2021-11-07 12:22:46,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:46,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:46,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:46,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:46,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:46,852 INFO L87 Difference]: Start difference. First operand 2884 states and 4194 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:48,880 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:49,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:49,016 INFO L93 Difference]: Finished difference Result 2884 states and 4194 transitions. [2021-11-07 12:22:49,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:49,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-07 12:22:49,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:49,027 INFO L225 Difference]: With dead ends: 2884 [2021-11-07 12:22:49,027 INFO L226 Difference]: Without dead ends: 2882 [2021-11-07 12:22:49,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.69ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:49,029 INFO L933 BasicCegarLoop]: 2106 mSDtfsCounter, 2084 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2028.14ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2117.16ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:49,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2084 Valid, 2106 Invalid, 2 Unknown, 0 Unchecked, 3.33ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2117.16ms Time] [2021-11-07 12:22:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2021-11-07 12:22:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2882. [2021-11-07 12:22:49,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2860 states have (on average 1.4587412587412587) internal successors, (4172), 2863 states have internal predecessors, (4172), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 4192 transitions. [2021-11-07 12:22:49,102 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 4192 transitions. Word has length 25 [2021-11-07 12:22:49,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:49,102 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 4192 transitions. [2021-11-07 12:22:49,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:49,103 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 4192 transitions. [2021-11-07 12:22:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-07 12:22:49,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:49,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:49,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:22:49,104 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:49,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash 567397962, now seen corresponding path program 1 times [2021-11-07 12:22:49,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:49,105 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393238961] [2021-11-07 12:22:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:49,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:49,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:49,217 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:49,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393238961] [2021-11-07 12:22:49,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393238961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:49,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:49,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261152404] [2021-11-07 12:22:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:49,219 INFO L87 Difference]: Start difference. First operand 2882 states and 4192 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:51,250 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:51,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:51,405 INFO L93 Difference]: Finished difference Result 2882 states and 4192 transitions. [2021-11-07 12:22:51,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:51,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-07 12:22:51,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:51,414 INFO L225 Difference]: With dead ends: 2882 [2021-11-07 12:22:51,414 INFO L226 Difference]: Without dead ends: 2880 [2021-11-07 12:22:51,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.01ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:51,417 INFO L933 BasicCegarLoop]: 2104 mSDtfsCounter, 2081 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2031.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2081 SdHoareTripleChecker+Valid, 2104 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2131.12ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:51,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2081 Valid, 2104 Invalid, 2 Unknown, 0 Unchecked, 3.45ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2131.12ms Time] [2021-11-07 12:22:51,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2021-11-07 12:22:51,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 2880. [2021-11-07 12:22:51,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2880 states, 2859 states have (on average 1.458551941238195) internal successors, (4170), 2861 states have internal predecessors, (4170), 10 states have call successors, (10), 8 states have call predecessors, (10), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 12:22:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 4190 transitions. [2021-11-07 12:22:51,488 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 4190 transitions. Word has length 26 [2021-11-07 12:22:51,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 2880 states and 4190 transitions. [2021-11-07 12:22:51,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 4190 transitions. [2021-11-07 12:22:51,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-07 12:22:51,492 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:51,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:51,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:22:51,492 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash 409470481, now seen corresponding path program 1 times [2021-11-07 12:22:51,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:51,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031664331] [2021-11-07 12:22:51,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:51,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:51,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:51,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031664331] [2021-11-07 12:22:51,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031664331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:51,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:51,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:51,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986060247] [2021-11-07 12:22:51,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:51,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:51,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:51,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:51,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:51,585 INFO L87 Difference]: Start difference. First operand 2880 states and 4190 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:53,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:53,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:53,812 INFO L93 Difference]: Finished difference Result 6373 states and 9225 transitions. [2021-11-07 12:22:53,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:53,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-07 12:22:53,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:53,824 INFO L225 Difference]: With dead ends: 6373 [2021-11-07 12:22:53,824 INFO L226 Difference]: Without dead ends: 3490 [2021-11-07 12:22:53,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:53,830 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 1896 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2045.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 2705 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.62ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2147.28ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:53,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1896 Valid, 2705 Invalid, 11 Unknown, 0 Unchecked, 3.62ms Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2147.28ms Time] [2021-11-07 12:22:53,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2021-11-07 12:22:53,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3485. [2021-11-07 12:22:53,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3455 states have (on average 1.4396526772793055) internal successors, (4974), 3455 states have internal predecessors, (4974), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-07 12:22:53,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5008 transitions. [2021-11-07 12:22:53,920 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5008 transitions. Word has length 27 [2021-11-07 12:22:53,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:53,920 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 5008 transitions. [2021-11-07 12:22:53,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:53,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5008 transitions. [2021-11-07 12:22:53,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 12:22:53,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:53,927 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:53,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:22:53,928 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:53,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:53,928 INFO L85 PathProgramCache]: Analyzing trace with hash 591192921, now seen corresponding path program 1 times [2021-11-07 12:22:53,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:53,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883832056] [2021-11-07 12:22:53,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:53,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:54,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:22:54,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:54,058 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883832056] [2021-11-07 12:22:54,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883832056] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:54,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:54,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:54,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548495884] [2021-11-07 12:22:54,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:54,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:54,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:54,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:54,060 INFO L87 Difference]: Start difference. First operand 3485 states and 5008 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:54,201 INFO L93 Difference]: Finished difference Result 8023 states and 11638 transitions. [2021-11-07 12:22:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:54,202 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 12:22:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:54,222 INFO L225 Difference]: With dead ends: 8023 [2021-11-07 12:22:54,222 INFO L226 Difference]: Without dead ends: 4541 [2021-11-07 12:22:54,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:54,229 INFO L933 BasicCegarLoop]: 2098 mSDtfsCounter, 807 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 4176 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.82ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.84ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:54,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 4176 Invalid, 17 Unknown, 0 Unchecked, 3.82ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 53.84ms Time] [2021-11-07 12:22:54,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2021-11-07 12:22:54,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4541. [2021-11-07 12:22:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4541 states, 4511 states have (on average 1.462425182886278) internal successors, (6597), 4511 states have internal predecessors, (6597), 14 states have call successors, (14), 14 states have call predecessors, (14), 14 states have return successors, (20), 15 states have call predecessors, (20), 14 states have call successors, (20) [2021-11-07 12:22:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4541 states to 4541 states and 6631 transitions. [2021-11-07 12:22:54,343 INFO L78 Accepts]: Start accepts. Automaton has 4541 states and 6631 transitions. Word has length 112 [2021-11-07 12:22:54,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:54,343 INFO L470 AbstractCegarLoop]: Abstraction has 4541 states and 6631 transitions. [2021-11-07 12:22:54,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:54,344 INFO L276 IsEmpty]: Start isEmpty. Operand 4541 states and 6631 transitions. [2021-11-07 12:22:54,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 12:22:54,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:54,354 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:54,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:22:54,354 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:54,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:54,355 INFO L85 PathProgramCache]: Analyzing trace with hash -556825001, now seen corresponding path program 1 times [2021-11-07 12:22:54,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:54,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120155635] [2021-11-07 12:22:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:54,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:54,502 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:22:54,502 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:54,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120155635] [2021-11-07 12:22:54,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120155635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:54,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:54,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:22:54,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947531720] [2021-11-07 12:22:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:54,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:22:54,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:54,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:22:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:22:54,507 INFO L87 Difference]: Start difference. First operand 4541 states and 6631 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:54,621 INFO L93 Difference]: Finished difference Result 9095 states and 13297 transitions. [2021-11-07 12:22:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:22:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 12:22:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:54,638 INFO L225 Difference]: With dead ends: 9095 [2021-11-07 12:22:54,638 INFO L226 Difference]: Without dead ends: 4557 [2021-11-07 12:22:54,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:54,647 INFO L933 BasicCegarLoop]: 2094 mSDtfsCounter, 5 mSDsluCounter, 4184 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6278 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.81ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.06ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:54,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6278 Invalid, 9 Unknown, 0 Unchecked, 5.81ms Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 12.06ms Time] [2021-11-07 12:22:54,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4557 states. [2021-11-07 12:22:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4557 to 4553. [2021-11-07 12:22:54,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4553 states, 4521 states have (on average 1.4614023446140234) internal successors, (6607), 4523 states have internal predecessors, (6607), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 12:22:54,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4553 states to 4553 states and 6643 transitions. [2021-11-07 12:22:54,750 INFO L78 Accepts]: Start accepts. Automaton has 4553 states and 6643 transitions. Word has length 130 [2021-11-07 12:22:54,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:54,751 INFO L470 AbstractCegarLoop]: Abstraction has 4553 states and 6643 transitions. [2021-11-07 12:22:54,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:54,752 INFO L276 IsEmpty]: Start isEmpty. Operand 4553 states and 6643 transitions. [2021-11-07 12:22:54,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-07 12:22:54,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:54,760 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:54,760 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:22:54,760 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:54,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:54,760 INFO L85 PathProgramCache]: Analyzing trace with hash 2119167381, now seen corresponding path program 1 times [2021-11-07 12:22:54,761 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:54,761 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027093846] [2021-11-07 12:22:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:54,761 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:54,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:54,980 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:22:54,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:54,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027093846] [2021-11-07 12:22:54,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027093846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:54,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:54,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:22:54,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549337734] [2021-11-07 12:22:54,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:54,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:22:54,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:22:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:22:54,982 INFO L87 Difference]: Start difference. First operand 4553 states and 6643 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:55,126 INFO L93 Difference]: Finished difference Result 9127 states and 13329 transitions. [2021-11-07 12:22:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:22:55,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 130 [2021-11-07 12:22:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:55,137 INFO L225 Difference]: With dead ends: 9127 [2021-11-07 12:22:55,137 INFO L226 Difference]: Without dead ends: 4577 [2021-11-07 12:22:55,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:55,147 INFO L933 BasicCegarLoop]: 2096 mSDtfsCounter, 9 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6273 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.24ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:55,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6273 Invalid, 21 Unknown, 0 Unchecked, 4.76ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 33.24ms Time] [2021-11-07 12:22:55,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4577 states. [2021-11-07 12:22:55,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4577 to 4565. [2021-11-07 12:22:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4565 states, 4533 states have (on average 1.4601808956540923) internal successors, (6619), 4535 states have internal predecessors, (6619), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 12:22:55,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4565 states to 4565 states and 6655 transitions. [2021-11-07 12:22:55,248 INFO L78 Accepts]: Start accepts. Automaton has 4565 states and 6655 transitions. Word has length 130 [2021-11-07 12:22:55,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:55,249 INFO L470 AbstractCegarLoop]: Abstraction has 4565 states and 6655 transitions. [2021-11-07 12:22:55,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:55,249 INFO L276 IsEmpty]: Start isEmpty. Operand 4565 states and 6655 transitions. [2021-11-07 12:22:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-07 12:22:55,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:55,255 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:55,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:22:55,256 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:55,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:55,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1131900254, now seen corresponding path program 1 times [2021-11-07 12:22:55,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:55,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477699417] [2021-11-07 12:22:55,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:55,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:55,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:55,436 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:22:55,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:55,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477699417] [2021-11-07 12:22:55,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477699417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:55,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:55,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:22:55,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985656339] [2021-11-07 12:22:55,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:55,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:22:55,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:55,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:22:55,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:22:55,438 INFO L87 Difference]: Start difference. First operand 4565 states and 6655 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:55,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:55,556 INFO L93 Difference]: Finished difference Result 9163 states and 13365 transitions. [2021-11-07 12:22:55,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:22:55,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 136 [2021-11-07 12:22:55,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:55,567 INFO L225 Difference]: With dead ends: 9163 [2021-11-07 12:22:55,567 INFO L226 Difference]: Without dead ends: 4601 [2021-11-07 12:22:55,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:55,576 INFO L933 BasicCegarLoop]: 2098 mSDtfsCounter, 15 mSDsluCounter, 4178 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6276 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.31ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.22ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:55,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 6276 Invalid, 20 Unknown, 0 Unchecked, 4.31ms Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 22.22ms Time] [2021-11-07 12:22:55,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4601 states. [2021-11-07 12:22:55,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4601 to 4579. [2021-11-07 12:22:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4579 states, 4547 states have (on average 1.4587640202331207) internal successors, (6633), 4549 states have internal predecessors, (6633), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 12:22:55,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4579 states to 4579 states and 6669 transitions. [2021-11-07 12:22:55,672 INFO L78 Accepts]: Start accepts. Automaton has 4579 states and 6669 transitions. Word has length 136 [2021-11-07 12:22:55,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:55,674 INFO L470 AbstractCegarLoop]: Abstraction has 4579 states and 6669 transitions. [2021-11-07 12:22:55,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:55,674 INFO L276 IsEmpty]: Start isEmpty. Operand 4579 states and 6669 transitions. [2021-11-07 12:22:55,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-07 12:22:55,680 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:55,680 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:55,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:22:55,681 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:55,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:55,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1424408872, now seen corresponding path program 1 times [2021-11-07 12:22:55,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:55,681 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697966515] [2021-11-07 12:22:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:55,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:22:55,830 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:55,830 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697966515] [2021-11-07 12:22:55,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697966515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:55,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:55,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:22:55,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164686408] [2021-11-07 12:22:55,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:55,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:55,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:55,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:55,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:55,832 INFO L87 Difference]: Start difference. First operand 4579 states and 6669 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:55,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:55,950 INFO L93 Difference]: Finished difference Result 9451 states and 13761 transitions. [2021-11-07 12:22:55,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:55,950 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-07 12:22:55,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:55,960 INFO L225 Difference]: With dead ends: 9451 [2021-11-07 12:22:55,960 INFO L226 Difference]: Without dead ends: 4875 [2021-11-07 12:22:55,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.73ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:22:55,969 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 98 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4171 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.32ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:55,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4171 Invalid, 21 Unknown, 0 Unchecked, 2.93ms Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 27.32ms Time] [2021-11-07 12:22:55,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4875 states. [2021-11-07 12:22:56,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4875 to 4587. [2021-11-07 12:22:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4587 states, 4555 states have (on average 1.4579582875960484) internal successors, (6641), 4557 states have internal predecessors, (6641), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 12:22:56,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4587 states to 4587 states and 6677 transitions. [2021-11-07 12:22:56,067 INFO L78 Accepts]: Start accepts. Automaton has 4587 states and 6677 transitions. Word has length 143 [2021-11-07 12:22:56,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:56,067 INFO L470 AbstractCegarLoop]: Abstraction has 4587 states and 6677 transitions. [2021-11-07 12:22:56,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:56,068 INFO L276 IsEmpty]: Start isEmpty. Operand 4587 states and 6677 transitions. [2021-11-07 12:22:56,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 12:22:56,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:56,074 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:56,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:22:56,074 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash 499833131, now seen corresponding path program 1 times [2021-11-07 12:22:56,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:56,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285403552] [2021-11-07 12:22:56,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:56,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:56,222 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:22:56,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:56,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285403552] [2021-11-07 12:22:56,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285403552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:56,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:22:56,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:22:56,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683141939] [2021-11-07 12:22:56,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:56,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:22:56,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:56,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:22:56,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:22:56,224 INFO L87 Difference]: Start difference. First operand 4587 states and 6677 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:56,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:56,346 INFO L93 Difference]: Finished difference Result 9215 states and 13417 transitions. [2021-11-07 12:22:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:22:56,347 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 12:22:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:56,356 INFO L225 Difference]: With dead ends: 9215 [2021-11-07 12:22:56,356 INFO L226 Difference]: Without dead ends: 4631 [2021-11-07 12:22:56,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.69ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:56,367 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 19 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 6278 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.30ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:56,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 6278 Invalid, 21 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 25.30ms Time] [2021-11-07 12:22:56,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4631 states. [2021-11-07 12:22:56,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4631 to 4599. [2021-11-07 12:22:56,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4567 states have (on average 1.45675498138822) internal successors, (6653), 4569 states have internal predecessors, (6653), 14 states have call successors, (14), 14 states have call predecessors, (14), 16 states have return successors, (22), 15 states have call predecessors, (22), 14 states have call successors, (22) [2021-11-07 12:22:56,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 6689 transitions. [2021-11-07 12:22:56,465 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 6689 transitions. Word has length 148 [2021-11-07 12:22:56,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:56,465 INFO L470 AbstractCegarLoop]: Abstraction has 4599 states and 6689 transitions. [2021-11-07 12:22:56,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:56,466 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 6689 transitions. [2021-11-07 12:22:56,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-07 12:22:56,472 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:56,472 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:22:56,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 12:22:56,473 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:22:56,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:22:56,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1960295004, now seen corresponding path program 1 times [2021-11-07 12:22:56,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:22:56,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457320857] [2021-11-07 12:22:56,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:56,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:22:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:56,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-07 12:22:56,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:22:56,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457320857] [2021-11-07 12:22:56,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457320857] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:22:56,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232173679] [2021-11-07 12:22:56,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:22:56,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:22:56,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:22:56,672 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:22:56,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 12:22:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:22:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3411 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:22:57,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:22:57,660 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-07 12:22:57,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:22:57,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232173679] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:22:57,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:22:57,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-07 12:22:57,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820496474] [2021-11-07 12:22:57,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:22:57,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:22:57,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:22:57,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:22:57,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:57,663 INFO L87 Difference]: Start difference. First operand 4599 states and 6689 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:59,692 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:22:59,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:22:59,868 INFO L93 Difference]: Finished difference Result 5559 states and 7982 transitions. [2021-11-07 12:22:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:22:59,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 152 [2021-11-07 12:22:59,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:22:59,877 INFO L225 Difference]: With dead ends: 5559 [2021-11-07 12:22:59,877 INFO L226 Difference]: Without dead ends: 4586 [2021-11-07 12:22:59,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.69ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:22:59,881 INFO L933 BasicCegarLoop]: 2496 mSDtfsCounter, 588 mSDsluCounter, 1900 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2034.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.37ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2132.24ms IncrementalHoareTripleChecker+Time [2021-11-07 12:22:59,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 4396 Invalid, 7 Unknown, 0 Unchecked, 3.37ms Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2132.24ms Time] [2021-11-07 12:22:59,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4586 states. [2021-11-07 12:22:59,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4586 to 4564. [2021-11-07 12:22:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4564 states, 4538 states have (on average 1.4585720581754076) internal successors, (6619), 4538 states have internal predecessors, (6619), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:22:59,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4564 states to 4564 states and 6644 transitions. [2021-11-07 12:22:59,975 INFO L78 Accepts]: Start accepts. Automaton has 4564 states and 6644 transitions. Word has length 152 [2021-11-07 12:22:59,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:22:59,975 INFO L470 AbstractCegarLoop]: Abstraction has 4564 states and 6644 transitions. [2021-11-07 12:22:59,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:22:59,976 INFO L276 IsEmpty]: Start isEmpty. Operand 4564 states and 6644 transitions. [2021-11-07 12:22:59,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2021-11-07 12:22:59,984 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:22:59,984 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:00,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 12:23:00,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 12:23:00,208 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:00,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:00,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2115324467, now seen corresponding path program 1 times [2021-11-07 12:23:00,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:00,208 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440456042] [2021-11-07 12:23:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:00,208 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:00,386 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 12:23:00,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:00,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440456042] [2021-11-07 12:23:00,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440456042] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:23:00,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705380581] [2021-11-07 12:23:00,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:00,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:23:00,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:23:00,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:23:00,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 12:23:01,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:01,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 5048 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 12:23:01,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:23:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 12:23:01,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 12:23:02,250 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 12:23:02,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705380581] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 12:23:02,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 12:23:02,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2021-11-07 12:23:02,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535316645] [2021-11-07 12:23:02,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 12:23:02,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:23:02,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:02,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:23:02,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:02,252 INFO L87 Difference]: Start difference. First operand 4564 states and 6644 transitions. Second operand has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:02,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:02,518 INFO L93 Difference]: Finished difference Result 9717 states and 14111 transitions. [2021-11-07 12:23:02,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:23:02,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 264 [2021-11-07 12:23:02,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:02,528 INFO L225 Difference]: With dead ends: 9717 [2021-11-07 12:23:02,529 INFO L226 Difference]: Without dead ends: 5156 [2021-11-07 12:23:02,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 526 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 11.96ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:02,537 INFO L933 BasicCegarLoop]: 2086 mSDtfsCounter, 388 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 6340 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.83ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.76ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:02,537 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [388 Valid, 6340 Invalid, 49 Unknown, 0 Unchecked, 3.83ms Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 47.76ms Time] [2021-11-07 12:23:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5156 states. [2021-11-07 12:23:02,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5156 to 5156. [2021-11-07 12:23:02,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5156 states, 5130 states have (on average 1.4461988304093567) internal successors, (7419), 5130 states have internal predecessors, (7419), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:02,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5156 states to 5156 states and 7444 transitions. [2021-11-07 12:23:02,651 INFO L78 Accepts]: Start accepts. Automaton has 5156 states and 7444 transitions. Word has length 264 [2021-11-07 12:23:02,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:02,651 INFO L470 AbstractCegarLoop]: Abstraction has 5156 states and 7444 transitions. [2021-11-07 12:23:02,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.5) internal successors, (213), 6 states have internal predecessors, (213), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:02,651 INFO L276 IsEmpty]: Start isEmpty. Operand 5156 states and 7444 transitions. [2021-11-07 12:23:02,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 12:23:02,661 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:02,661 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:02,695 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 12:23:02,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-07 12:23:02,887 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:02,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:02,887 INFO L85 PathProgramCache]: Analyzing trace with hash -571604467, now seen corresponding path program 2 times [2021-11-07 12:23:02,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:02,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814589355] [2021-11-07 12:23:02,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:02,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2021-11-07 12:23:03,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:03,112 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814589355] [2021-11-07 12:23:03,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814589355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:03,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:03,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:23:03,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907449640] [2021-11-07 12:23:03,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:03,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:23:03,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:03,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:23:03,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:03,114 INFO L87 Difference]: Start difference. First operand 5156 states and 7444 transitions. Second operand has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:03,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:03,712 INFO L93 Difference]: Finished difference Result 11737 states and 16800 transitions. [2021-11-07 12:23:03,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:03,712 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 284 [2021-11-07 12:23:03,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:03,726 INFO L225 Difference]: With dead ends: 11737 [2021-11-07 12:23:03,726 INFO L226 Difference]: Without dead ends: 6584 [2021-11-07 12:23:03,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 24.26ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:23:03,736 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 327 mSDsluCounter, 8573 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 393.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 10756 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.00ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 438.16ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:03,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [328 Valid, 10756 Invalid, 131 Unknown, 0 Unchecked, 7.00ms Time], IncrementalHoareTripleChecker [29 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 438.16ms Time] [2021-11-07 12:23:03,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6584 states. [2021-11-07 12:23:03,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6584 to 5204. [2021-11-07 12:23:03,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 5178 states have (on average 1.4420625724217844) internal successors, (7467), 5178 states have internal predecessors, (7467), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7492 transitions. [2021-11-07 12:23:03,871 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7492 transitions. Word has length 284 [2021-11-07 12:23:03,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:03,871 INFO L470 AbstractCegarLoop]: Abstraction has 5204 states and 7492 transitions. [2021-11-07 12:23:03,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 38.0) internal successors, (228), 6 states have internal predecessors, (228), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7492 transitions. [2021-11-07 12:23:03,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-07 12:23:03,883 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:03,883 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:03,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 12:23:03,883 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:03,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1138071449, now seen corresponding path program 1 times [2021-11-07 12:23:03,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:03,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884494422] [2021-11-07 12:23:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:03,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:04,115 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-07 12:23:04,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:04,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884494422] [2021-11-07 12:23:04,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884494422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:04,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:04,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:23:04,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413264144] [2021-11-07 12:23:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:04,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:23:04,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:23:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:04,118 INFO L87 Difference]: Start difference. First operand 5204 states and 7492 transitions. Second operand has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:04,694 INFO L93 Difference]: Finished difference Result 11889 states and 16963 transitions. [2021-11-07 12:23:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:04,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-07 12:23:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:04,710 INFO L225 Difference]: With dead ends: 11889 [2021-11-07 12:23:04,710 INFO L226 Difference]: Without dead ends: 6688 [2021-11-07 12:23:04,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 22.31ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:23:04,720 INFO L933 BasicCegarLoop]: 2204 mSDtfsCounter, 384 mSDsluCounter, 8618 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 354.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 10822 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.69ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 399.14ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:04,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [385 Valid, 10822 Invalid, 135 Unknown, 0 Unchecked, 7.69ms Time], IncrementalHoareTripleChecker [23 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 399.14ms Time] [2021-11-07 12:23:04,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2021-11-07 12:23:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 5228. [2021-11-07 12:23:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5202 states have (on average 1.4400230680507498) internal successors, (7491), 5202 states have internal predecessors, (7491), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:04,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 7516 transitions. [2021-11-07 12:23:04,853 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 7516 transitions. Word has length 306 [2021-11-07 12:23:04,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:04,853 INFO L470 AbstractCegarLoop]: Abstraction has 5228 states and 7516 transitions. [2021-11-07 12:23:04,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.5) internal successors, (237), 6 states have internal predecessors, (237), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:04,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 7516 transitions. [2021-11-07 12:23:04,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-07 12:23:04,865 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:04,865 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:04,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 12:23:04,866 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:04,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:04,867 INFO L85 PathProgramCache]: Analyzing trace with hash -975621987, now seen corresponding path program 1 times [2021-11-07 12:23:04,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:04,867 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96375919] [2021-11-07 12:23:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:04,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:05,096 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-07 12:23:05,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:05,097 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96375919] [2021-11-07 12:23:05,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96375919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:05,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:05,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:23:05,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943639726] [2021-11-07 12:23:05,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:05,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:23:05,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:05,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:23:05,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:05,099 INFO L87 Difference]: Start difference. First operand 5228 states and 7516 transitions. Second operand has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:05,732 INFO L93 Difference]: Finished difference Result 12129 states and 17274 transitions. [2021-11-07 12:23:05,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:05,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-07 12:23:05,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:05,745 INFO L225 Difference]: With dead ends: 12129 [2021-11-07 12:23:05,746 INFO L226 Difference]: Without dead ends: 6904 [2021-11-07 12:23:05,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.97ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:23:05,754 INFO L933 BasicCegarLoop]: 2233 mSDtfsCounter, 416 mSDsluCounter, 8697 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 382.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 10930 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.21ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 436.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:05,754 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 10930 Invalid, 156 Unknown, 0 Unchecked, 11.21ms Time], IncrementalHoareTripleChecker [22 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 436.83ms Time] [2021-11-07 12:23:05,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6904 states. [2021-11-07 12:23:05,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6904 to 5252. [2021-11-07 12:23:05,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5252 states, 5226 states have (on average 1.4380022962112515) internal successors, (7515), 5226 states have internal predecessors, (7515), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 7540 transitions. [2021-11-07 12:23:05,894 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 7540 transitions. Word has length 306 [2021-11-07 12:23:05,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:05,894 INFO L470 AbstractCegarLoop]: Abstraction has 5252 states and 7540 transitions. [2021-11-07 12:23:05,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.5) internal successors, (243), 6 states have internal predecessors, (243), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:05,894 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 7540 transitions. [2021-11-07 12:23:05,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-07 12:23:05,902 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:05,902 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:05,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 12:23:05,903 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1800086367, now seen corresponding path program 1 times [2021-11-07 12:23:05,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:05,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780728098] [2021-11-07 12:23:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:05,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:05,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:06,110 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-11-07 12:23:06,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:06,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780728098] [2021-11-07 12:23:06,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780728098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:06,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:06,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 12:23:06,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011440358] [2021-11-07 12:23:06,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:06,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 12:23:06,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:06,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 12:23:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 12:23:06,113 INFO L87 Difference]: Start difference. First operand 5252 states and 7540 transitions. Second operand has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:06,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:06,900 INFO L93 Difference]: Finished difference Result 12109 states and 17226 transitions. [2021-11-07 12:23:06,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:06,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-07 12:23:06,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:06,913 INFO L225 Difference]: With dead ends: 12109 [2021-11-07 12:23:06,913 INFO L226 Difference]: Without dead ends: 6860 [2021-11-07 12:23:06,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 21.98ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:23:06,920 INFO L933 BasicCegarLoop]: 2251 mSDtfsCounter, 399 mSDsluCounter, 8769 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 451.56ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 11020 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.33ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 497.15ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:06,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 11020 Invalid, 158 Unknown, 0 Unchecked, 10.33ms Time], IncrementalHoareTripleChecker [22 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 497.15ms Time] [2021-11-07 12:23:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6860 states. [2021-11-07 12:23:07,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6860 to 5276. [2021-11-07 12:23:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5276 states, 5250 states have (on average 1.436) internal successors, (7539), 5250 states have internal predecessors, (7539), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5276 states to 5276 states and 7564 transitions. [2021-11-07 12:23:07,060 INFO L78 Accepts]: Start accepts. Automaton has 5276 states and 7564 transitions. Word has length 306 [2021-11-07 12:23:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:07,061 INFO L470 AbstractCegarLoop]: Abstraction has 5276 states and 7564 transitions. [2021-11-07 12:23:07,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 41.333333333333336) internal successors, (248), 6 states have internal predecessors, (248), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:07,061 INFO L276 IsEmpty]: Start isEmpty. Operand 5276 states and 7564 transitions. [2021-11-07 12:23:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-07 12:23:07,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:07,070 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:07,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 12:23:07,071 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:07,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:07,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1014414877, now seen corresponding path program 1 times [2021-11-07 12:23:07,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:07,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149080874] [2021-11-07 12:23:07,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:07,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:07,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:07,277 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-11-07 12:23:07,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:07,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149080874] [2021-11-07 12:23:07,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149080874] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:07,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:07,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:23:07,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723170314] [2021-11-07 12:23:07,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:07,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:23:07,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:07,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:23:07,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:23:07,280 INFO L87 Difference]: Start difference. First operand 5276 states and 7564 transitions. Second operand has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:07,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:07,483 INFO L93 Difference]: Finished difference Result 10637 states and 15252 transitions. [2021-11-07 12:23:07,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:23:07,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 306 [2021-11-07 12:23:07,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:07,494 INFO L225 Difference]: With dead ends: 10637 [2021-11-07 12:23:07,494 INFO L226 Difference]: Without dead ends: 5364 [2021-11-07 12:23:07,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.01ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:23:07,502 INFO L933 BasicCegarLoop]: 2093 mSDtfsCounter, 28 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 6257 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.54ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:07,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 6257 Invalid, 30 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 79.54ms Time] [2021-11-07 12:23:07,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5364 states. [2021-11-07 12:23:07,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5364 to 5284. [2021-11-07 12:23:07,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5284 states, 5258 states have (on average 1.4353366298972994) internal successors, (7547), 5258 states have internal predecessors, (7547), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:07,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5284 states to 5284 states and 7572 transitions. [2021-11-07 12:23:07,627 INFO L78 Accepts]: Start accepts. Automaton has 5284 states and 7572 transitions. Word has length 306 [2021-11-07 12:23:07,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:07,627 INFO L470 AbstractCegarLoop]: Abstraction has 5284 states and 7572 transitions. [2021-11-07 12:23:07,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 64.0) internal successors, (256), 4 states have internal predecessors, (256), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:07,627 INFO L276 IsEmpty]: Start isEmpty. Operand 5284 states and 7572 transitions. [2021-11-07 12:23:07,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-07 12:23:07,635 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:07,635 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:07,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 12:23:07,635 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:07,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:07,636 INFO L85 PathProgramCache]: Analyzing trace with hash 623106893, now seen corresponding path program 1 times [2021-11-07 12:23:07,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:07,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415539522] [2021-11-07 12:23:07,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:07,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:07,853 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 166 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:23:07,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:07,853 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415539522] [2021-11-07 12:23:07,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415539522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:07,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:07,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:23:07,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483564398] [2021-11-07 12:23:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:07,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:23:07,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:23:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:23:07,856 INFO L87 Difference]: Start difference. First operand 5284 states and 7572 transitions. Second operand has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:08,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:08,042 INFO L93 Difference]: Finished difference Result 10589 states and 15181 transitions. [2021-11-07 12:23:08,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:23:08,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 328 [2021-11-07 12:23:08,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:08,053 INFO L225 Difference]: With dead ends: 10589 [2021-11-07 12:23:08,054 INFO L226 Difference]: Without dead ends: 5308 [2021-11-07 12:23:08,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:23:08,062 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 9 mSDsluCounter, 4163 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 6255 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.13ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.39ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:08,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 6255 Invalid, 30 Unknown, 0 Unchecked, 3.13ms Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 70.39ms Time] [2021-11-07 12:23:08,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5308 states. [2021-11-07 12:23:08,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5308 to 5292. [2021-11-07 12:23:08,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5292 states, 5266 states have (on average 1.4346752753513103) internal successors, (7555), 5266 states have internal predecessors, (7555), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:08,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5292 states to 5292 states and 7580 transitions. [2021-11-07 12:23:08,192 INFO L78 Accepts]: Start accepts. Automaton has 5292 states and 7580 transitions. Word has length 328 [2021-11-07 12:23:08,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:08,193 INFO L470 AbstractCegarLoop]: Abstraction has 5292 states and 7580 transitions. [2021-11-07 12:23:08,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.0) internal successors, (284), 4 states have internal predecessors, (284), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:08,193 INFO L276 IsEmpty]: Start isEmpty. Operand 5292 states and 7580 transitions. [2021-11-07 12:23:08,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2021-11-07 12:23:08,200 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:08,200 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:08,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 12:23:08,200 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:08,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:08,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1711241477, now seen corresponding path program 1 times [2021-11-07 12:23:08,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:08,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719900777] [2021-11-07 12:23:08,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:08,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:08,770 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-11-07 12:23:08,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:08,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719900777] [2021-11-07 12:23:08,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719900777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:08,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:08,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 12:23:08,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709436219] [2021-11-07 12:23:08,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:08,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 12:23:08,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:08,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 12:23:08,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:23:08,773 INFO L87 Difference]: Start difference. First operand 5292 states and 7580 transitions. Second operand has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:09,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:09,268 INFO L93 Difference]: Finished difference Result 14181 states and 20009 transitions. [2021-11-07 12:23:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:09,269 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 350 [2021-11-07 12:23:09,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:09,291 INFO L225 Difference]: With dead ends: 14181 [2021-11-07 12:23:09,291 INFO L226 Difference]: Without dead ends: 8892 [2021-11-07 12:23:09,300 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 93.11ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-11-07 12:23:09,301 INFO L933 BasicCegarLoop]: 2088 mSDtfsCounter, 1623 mSDsluCounter, 10570 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1624 SdHoareTripleChecker+Valid, 12658 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.44ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 129.35ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:09,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1624 Valid, 12658 Invalid, 149 Unknown, 0 Unchecked, 8.44ms Time], IncrementalHoareTripleChecker [23 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 129.35ms Time] [2021-11-07 12:23:09,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8892 states. [2021-11-07 12:23:09,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8892 to 5312. [2021-11-07 12:23:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5312 states, 5286 states have (on average 1.4330306469920544) internal successors, (7575), 5286 states have internal predecessors, (7575), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:09,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5312 states to 5312 states and 7600 transitions. [2021-11-07 12:23:09,562 INFO L78 Accepts]: Start accepts. Automaton has 5312 states and 7600 transitions. Word has length 350 [2021-11-07 12:23:09,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:09,562 INFO L470 AbstractCegarLoop]: Abstraction has 5312 states and 7600 transitions. [2021-11-07 12:23:09,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.714285714285715) internal successors, (187), 7 states have internal predecessors, (187), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:09,562 INFO L276 IsEmpty]: Start isEmpty. Operand 5312 states and 7600 transitions. [2021-11-07 12:23:09,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2021-11-07 12:23:09,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:09,571 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:09,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 12:23:09,572 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:09,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:09,572 INFO L85 PathProgramCache]: Analyzing trace with hash -35189235, now seen corresponding path program 1 times [2021-11-07 12:23:09,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:09,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145410119] [2021-11-07 12:23:09,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:09,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:09,976 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2021-11-07 12:23:09,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:09,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145410119] [2021-11-07 12:23:09,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145410119] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:09,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:09,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:23:09,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900114995] [2021-11-07 12:23:09,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:09,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:23:09,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:09,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:23:09,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:23:09,978 INFO L87 Difference]: Start difference. First operand 5312 states and 7600 transitions. Second operand has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:10,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:10,303 INFO L93 Difference]: Finished difference Result 11937 states and 16957 transitions. [2021-11-07 12:23:10,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:23:10,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 356 [2021-11-07 12:23:10,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:10,318 INFO L225 Difference]: With dead ends: 11937 [2021-11-07 12:23:10,318 INFO L226 Difference]: Without dead ends: 6628 [2021-11-07 12:23:10,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.27ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:23:10,326 INFO L933 BasicCegarLoop]: 2091 mSDtfsCounter, 248 mSDsluCounter, 6241 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 8332 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.45ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.38ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:10,326 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 8332 Invalid, 79 Unknown, 0 Unchecked, 5.45ms Time], IncrementalHoareTripleChecker [11 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 87.38ms Time] [2021-11-07 12:23:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6628 states. [2021-11-07 12:23:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6628 to 5324. [2021-11-07 12:23:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5324 states, 5298 states have (on average 1.4320498301245752) internal successors, (7587), 5298 states have internal predecessors, (7587), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:10,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5324 states to 5324 states and 7612 transitions. [2021-11-07 12:23:10,480 INFO L78 Accepts]: Start accepts. Automaton has 5324 states and 7612 transitions. Word has length 356 [2021-11-07 12:23:10,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:10,480 INFO L470 AbstractCegarLoop]: Abstraction has 5324 states and 7612 transitions. [2021-11-07 12:23:10,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 42.0) internal successors, (210), 5 states have internal predecessors, (210), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:10,480 INFO L276 IsEmpty]: Start isEmpty. Operand 5324 states and 7612 transitions. [2021-11-07 12:23:10,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-11-07 12:23:10,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:10,486 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:10,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 12:23:10,486 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:10,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:10,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1969471175, now seen corresponding path program 1 times [2021-11-07 12:23:10,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:10,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642025785] [2021-11-07 12:23:10,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:10,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2021-11-07 12:23:10,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:10,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642025785] [2021-11-07 12:23:10,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642025785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:10,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:10,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 12:23:10,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081068613] [2021-11-07 12:23:10,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:10,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:23:10,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:10,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:23:10,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:23:10,878 INFO L87 Difference]: Start difference. First operand 5324 states and 7612 transitions. Second operand has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:11,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:11,204 INFO L93 Difference]: Finished difference Result 11941 states and 16953 transitions. [2021-11-07 12:23:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:23:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 362 [2021-11-07 12:23:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:11,220 INFO L225 Difference]: With dead ends: 11941 [2021-11-07 12:23:11,220 INFO L226 Difference]: Without dead ends: 6620 [2021-11-07 12:23:11,228 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.95ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:23:11,229 INFO L933 BasicCegarLoop]: 2095 mSDtfsCounter, 256 mSDsluCounter, 6227 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 8322 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.39ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.96ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:11,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [257 Valid, 8322 Invalid, 87 Unknown, 0 Unchecked, 8.39ms Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 73.96ms Time] [2021-11-07 12:23:11,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6620 states. [2021-11-07 12:23:11,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6620 to 5348. [2021-11-07 12:23:11,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 5322 states have (on average 1.4301014656144306) internal successors, (7611), 5322 states have internal predecessors, (7611), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:11,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7636 transitions. [2021-11-07 12:23:11,401 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7636 transitions. Word has length 362 [2021-11-07 12:23:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:11,401 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 7636 transitions. [2021-11-07 12:23:11,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:11,401 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7636 transitions. [2021-11-07 12:23:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-07 12:23:11,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:11,410 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:11,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 12:23:11,411 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:11,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1736848629, now seen corresponding path program 1 times [2021-11-07 12:23:11,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:11,411 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455757997] [2021-11-07 12:23:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:11,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-11-07 12:23:11,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:11,950 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455757997] [2021-11-07 12:23:11,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455757997] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:11,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:11,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 12:23:11,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651316863] [2021-11-07 12:23:11,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:11,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 12:23:11,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:11,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 12:23:11,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 12:23:11,952 INFO L87 Difference]: Start difference. First operand 5348 states and 7636 transitions. Second operand has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:12,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:12,514 INFO L93 Difference]: Finished difference Result 11917 states and 16905 transitions. [2021-11-07 12:23:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:12,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 374 [2021-11-07 12:23:12,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:12,525 INFO L225 Difference]: With dead ends: 11917 [2021-11-07 12:23:12,525 INFO L226 Difference]: Without dead ends: 6572 [2021-11-07 12:23:12,530 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 133.28ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-07 12:23:12,530 INFO L933 BasicCegarLoop]: 2132 mSDtfsCounter, 298 mSDsluCounter, 12698 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 14830 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.03ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 127.30ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:12,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 14830 Invalid, 152 Unknown, 0 Unchecked, 8.03ms Time], IncrementalHoareTripleChecker [12 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 127.30ms Time] [2021-11-07 12:23:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6572 states. [2021-11-07 12:23:12,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6572 to 5372. [2021-11-07 12:23:12,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5372 states, 5346 states have (on average 1.4281705948372616) internal successors, (7635), 5346 states have internal predecessors, (7635), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:12,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5372 states to 5372 states and 7660 transitions. [2021-11-07 12:23:12,699 INFO L78 Accepts]: Start accepts. Automaton has 5372 states and 7660 transitions. Word has length 374 [2021-11-07 12:23:12,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:12,699 INFO L470 AbstractCegarLoop]: Abstraction has 5372 states and 7660 transitions. [2021-11-07 12:23:12,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.625) internal successors, (245), 8 states have internal predecessors, (245), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:12,699 INFO L276 IsEmpty]: Start isEmpty. Operand 5372 states and 7660 transitions. [2021-11-07 12:23:12,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2021-11-07 12:23:12,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:12,705 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:12,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 12:23:12,705 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:12,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:12,706 INFO L85 PathProgramCache]: Analyzing trace with hash -2037898323, now seen corresponding path program 1 times [2021-11-07 12:23:12,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:12,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63850028] [2021-11-07 12:23:12,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:12,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:25,553 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2021-11-07 12:23:25,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:25,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63850028] [2021-11-07 12:23:25,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63850028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:25,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:23:25,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:23:25,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000354147] [2021-11-07 12:23:25,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:25,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:23:25,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:25,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:23:25,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:23:25,556 INFO L87 Difference]: Start difference. First operand 5372 states and 7660 transitions. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:25,710 INFO L93 Difference]: Finished difference Result 10745 states and 15337 transitions. [2021-11-07 12:23:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:23:25,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 380 [2021-11-07 12:23:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:25,721 INFO L225 Difference]: With dead ends: 10745 [2021-11-07 12:23:25,721 INFO L226 Difference]: Without dead ends: 5376 [2021-11-07 12:23:25,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:23:25,728 INFO L933 BasicCegarLoop]: 2093 mSDtfsCounter, 0 mSDsluCounter, 2091 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4184 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.49ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.79ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:25,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4184 Invalid, 3 Unknown, 0 Unchecked, 2.49ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 4.79ms Time] [2021-11-07 12:23:25,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5376 states. [2021-11-07 12:23:25,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5376 to 5376. [2021-11-07 12:23:25,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-07 12:23:25,885 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 380 [2021-11-07 12:23:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:25,886 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-07 12:23:25,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 2 states have call successors, (6), 2 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-07 12:23:25,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 12:23:25,892 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:25,892 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:25,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 12:23:25,893 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:25,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:25,893 INFO L85 PathProgramCache]: Analyzing trace with hash 953417825, now seen corresponding path program 1 times [2021-11-07 12:23:25,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:25,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565523072] [2021-11-07 12:23:25,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:25,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:23:40,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:40,375 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:23:40,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:23:40,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565523072] [2021-11-07 12:23:40,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565523072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:23:40,375 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159089946] [2021-11-07 12:23:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:40,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:23:40,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:23:40,387 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:23:40,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 12:23:41,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:23:41,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 6656 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 12:23:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:23:42,183 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2021-11-07 12:23:42,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:23:42,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159089946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:23:42,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:23:42,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 12:23:42,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589426936] [2021-11-07 12:23:42,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:23:42,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:23:42,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:23:42,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:23:42,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:23:42,185 INFO L87 Difference]: Start difference. First operand 5376 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:23:42,443 INFO L93 Difference]: Finished difference Result 10797 states and 15387 transitions. [2021-11-07 12:23:42,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:23:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-07 12:23:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:23:42,454 INFO L225 Difference]: With dead ends: 10797 [2021-11-07 12:23:42,454 INFO L226 Difference]: Without dead ends: 5424 [2021-11-07 12:23:42,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 53.15ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:23:42,461 INFO L933 BasicCegarLoop]: 2097 mSDtfsCounter, 44 mSDsluCounter, 6236 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 8333 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.08ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.01ms IncrementalHoareTripleChecker+Time [2021-11-07 12:23:42,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 8333 Invalid, 35 Unknown, 0 Unchecked, 4.08ms Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 44.01ms Time] [2021-11-07 12:23:42,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5424 states. [2021-11-07 12:23:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5424 to 5376. [2021-11-07 12:23:42,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:23:42,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-07 12:23:42,621 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 382 [2021-11-07 12:23:42,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:23:42,622 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-07 12:23:42,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.8) internal successors, (219), 5 states have internal predecessors, (219), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:23:42,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-07 12:23:42,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 12:23:42,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:23:42,628 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:23:42,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 12:23:42,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:23:42,844 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:23:42,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:23:42,844 INFO L85 PathProgramCache]: Analyzing trace with hash 316017815, now seen corresponding path program 1 times [2021-11-07 12:23:42,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:23:42,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869142280] [2021-11-07 12:23:42,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:23:42,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:24:11,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:24:11,279 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:24:11,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:24:11,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869142280] [2021-11-07 12:24:11,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869142280] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:24:11,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983166038] [2021-11-07 12:24:11,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:24:11,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:24:11,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:24:11,282 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:24:11,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 12:24:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:24:12,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 6690 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 12:24:12,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 12:24:13,006 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-11-07 12:24:13,006 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 12:24:13,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983166038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:24:13,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 12:24:13,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 7 [2021-11-07 12:24:13,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599799004] [2021-11-07 12:24:13,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:24:13,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 12:24:13,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:24:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 12:24:13,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-07 12:24:13,007 INFO L87 Difference]: Start difference. First operand 5376 states and 7664 transitions. Second operand has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:24:13,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:24:13,231 INFO L93 Difference]: Finished difference Result 10837 states and 15427 transitions. [2021-11-07 12:24:13,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 12:24:13,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 382 [2021-11-07 12:24:13,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:24:13,241 INFO L225 Difference]: With dead ends: 10837 [2021-11-07 12:24:13,242 INFO L226 Difference]: Without dead ends: 5464 [2021-11-07 12:24:13,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 41.96ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-07 12:24:13,249 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 52 mSDsluCounter, 6248 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 8357 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.16ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.69ms IncrementalHoareTripleChecker+Time [2021-11-07 12:24:13,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 8357 Invalid, 37 Unknown, 0 Unchecked, 5.16ms Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 32.69ms Time] [2021-11-07 12:24:13,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5464 states. [2021-11-07 12:24:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5464 to 5376. [2021-11-07 12:24:13,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5376 states, 5350 states have (on average 1.4278504672897196) internal successors, (7639), 5350 states have internal predecessors, (7639), 13 states have call successors, (13), 13 states have call predecessors, (13), 12 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 12:24:13,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5376 states to 5376 states and 7664 transitions. [2021-11-07 12:24:13,407 INFO L78 Accepts]: Start accepts. Automaton has 5376 states and 7664 transitions. Word has length 382 [2021-11-07 12:24:13,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:24:13,408 INFO L470 AbstractCegarLoop]: Abstraction has 5376 states and 7664 transitions. [2021-11-07 12:24:13,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.6) internal successors, (258), 5 states have internal predecessors, (258), 2 states have call successors, (5), 2 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:24:13,408 INFO L276 IsEmpty]: Start isEmpty. Operand 5376 states and 7664 transitions. [2021-11-07 12:24:13,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2021-11-07 12:24:13,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:24:13,414 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:24:13,442 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-07 12:24:13,639 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-11-07 12:24:13,640 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION === [backlight_update_statusErr0ASSERT_VIOLATIONERROR_FUNCTION, backlight_update_statusErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-11-07 12:24:13,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:24:13,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1626357407, now seen corresponding path program 1 times [2021-11-07 12:24:13,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:24:13,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557911287] [2021-11-07 12:24:13,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:24:13,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:24:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:24:39,970 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 196 proven. 1 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 12:24:39,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:24:39,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557911287] [2021-11-07 12:24:39,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557911287] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 12:24:39,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [397668289] [2021-11-07 12:24:39,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:24:39,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 12:24:39,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:24:40,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 12:24:40,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15