./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.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--video--udlfb.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 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 12:28:30,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 12:28:30,989 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 12:28:31,030 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 12:28:31,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 12:28:31,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 12:28:31,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 12:28:31,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 12:28:31,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 12:28:31,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 12:28:31,039 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 12:28:31,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 12:28:31,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 12:28:31,043 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 12:28:31,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 12:28:31,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 12:28:31,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 12:28:31,050 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 12:28:31,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 12:28:31,052 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 12:28:31,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 12:28:31,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 12:28:31,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 12:28:31,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 12:28:31,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 12:28:31,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 12:28:31,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 12:28:31,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 12:28:31,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 12:28:31,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 12:28:31,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 12:28:31,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 12:28:31,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 12:28:31,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 12:28:31,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 12:28:31,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 12:28:31,064 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 12:28:31,064 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 12:28:31,064 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 12:28:31,065 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 12:28:31,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 12:28:31,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 12:28:31,083 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 12:28:31,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 12:28:31,083 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 12:28:31,084 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 12:28:31,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 12:28:31,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 12:28:31,085 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 12:28:31,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 12:28:31,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 12:28:31,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 12:28:31,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 12:28:31,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 12:28:31,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 12:28:31,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 12:28:31,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:28:31,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 12:28:31,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 12:28:31,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 12:28:31,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 12:28:31,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 12:28:31,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 12:28:31,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 12:28:31,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 12:28:31,088 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 12:28:31,088 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2021-11-07 12:28:31,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 12:28:31,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 12:28:31,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 12:28:31,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 12:28:31,277 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 12:28:31,278 INFO L432 ainManager$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--video--udlfb.ko-main.cil.out.i [2021-11-07 12:28:31,333 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9837c228/294b1b04fe03472e8e249bb7626148fb/FLAGd47dc54c8 [2021-11-07 12:28:31,846 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 12:28:31,847 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-11-07 12:28:31,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9837c228/294b1b04fe03472e8e249bb7626148fb/FLAGd47dc54c8 [2021-11-07 12:28:32,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9837c228/294b1b04fe03472e8e249bb7626148fb [2021-11-07 12:28:32,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 12:28:32,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 12:28:32,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 12:28:32,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 12:28:32,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 12:28:32,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:32" (1/1) ... [2021-11-07 12:28:32,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bfdc23b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:32, skipping insertion in model container [2021-11-07 12:28:32,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:32" (1/1) ... [2021-11-07 12:28:32,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 12:28:32,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 12:28:33,068 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--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-11-07 12:28:33,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:28:33,144 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 12:28:33,367 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--video--udlfb.ko-main.cil.out.i[199878,199891] [2021-11-07 12:28:33,394 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 12:28:33,456 INFO L208 MainTranslator]: Completed translation [2021-11-07 12:28:33,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33 WrapperNode [2021-11-07 12:28:33,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 12:28:33,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 12:28:33,459 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 12:28:33,459 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 12:28:33,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:33,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,172 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 12:28:34,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 12:28:34,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 12:28:34,173 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 12:28:34,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,380 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:34,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:35,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 12:28:35,132 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 12:28:35,132 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 12:28:35,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 12:28:35,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (1/1) ... [2021-11-07 12:28:35,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 12:28:35,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 12:28:35,167 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 12:28:35,222 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 12:28:35,256 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-07 12:28:35,257 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-07 12:28:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 12:28:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 12:28:35,257 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-11-07 12:28:35,258 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-11-07 12:28:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 12:28:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 12:28:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 12:28:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 12:28:35,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-11-07 12:28:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 12:28:35,259 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-11-07 12:28:35,259 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-11-07 12:28:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-07 12:28:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-07 12:28:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 12:28:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 12:28:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:28:35,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 12:28:35,260 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-11-07 12:28:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-11-07 12:28:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 12:28:35,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 12:28:35,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 12:29:07,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 12:29:07,103 INFO L299 CfgBuilder]: Removed 4380 assume(true) statements. [2021-11-07 12:29:07,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:07 BoogieIcfgContainer [2021-11-07 12:29:07,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 12:29:07,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 12:29:07,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 12:29:07,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 12:29:07,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:32" (1/3) ... [2021-11-07 12:29:07,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bbf248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:07, skipping insertion in model container [2021-11-07 12:29:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:33" (2/3) ... [2021-11-07 12:29:07,122 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63bbf248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:29:07, skipping insertion in model container [2021-11-07 12:29:07,122 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:29:07" (3/3) ... [2021-11-07 12:29:07,123 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-11-07 12:29:07,127 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 12:29:07,127 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-07 12:29:07,184 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 12:29:07,190 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 12:29:07,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-07 12:29:07,262 INFO L276 IsEmpty]: Start isEmpty. Operand has 4089 states, 4058 states have (on average 1.3173977328733366) internal successors, (5346), 4070 states have internal predecessors, (5346), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-07 12:29:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 12:29:07,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:07,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:07,270 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:07,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:07,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1156347363, now seen corresponding path program 1 times [2021-11-07 12:29:07,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:07,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564055366] [2021-11-07 12:29:07,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:07,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:07,659 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 12:29:07,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:07,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564055366] [2021-11-07 12:29:07,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564055366] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:07,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:07,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:07,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773532202] [2021-11-07 12:29:07,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:07,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:07,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:07,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:07,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:07,691 INFO L87 Difference]: Start difference. First operand has 4089 states, 4058 states have (on average 1.3173977328733366) internal successors, (5346), 4070 states have internal predecessors, (5346), 14 states have call successors, (14), 7 states have call predecessors, (14), 7 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 12:29:09,597 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:10,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:10,012 INFO L93 Difference]: Finished difference Result 12236 states and 16114 transitions. [2021-11-07 12:29:10,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:10,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2021-11-07 12:29:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:10,062 INFO L225 Difference]: With dead ends: 12236 [2021-11-07 12:29:10,062 INFO L226 Difference]: Without dead ends: 7958 [2021-11-07 12:29:10,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.13ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:10,086 INFO L933 BasicCegarLoop]: 5354 mSDtfsCounter, 5308 mSDsluCounter, 5326 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1907.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5308 SdHoareTripleChecker+Valid, 10680 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.58ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2054.75ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:10,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5308 Valid, 10680 Invalid, 16 Unknown, 0 Unchecked, 24.58ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 2054.75ms Time] [2021-11-07 12:29:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7958 states. [2021-11-07 12:29:10,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7958 to 7950. [2021-11-07 12:29:10,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 7899 states have (on average 1.2926952778832763) internal successors, (10211), 7913 states have internal predecessors, (10211), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 12:29:10,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 10267 transitions. [2021-11-07 12:29:10,327 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 10267 transitions. Word has length 13 [2021-11-07 12:29:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:10,328 INFO L470 AbstractCegarLoop]: Abstraction has 7950 states and 10267 transitions. [2021-11-07 12:29:10,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 12:29:10,330 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 10267 transitions. [2021-11-07 12:29:10,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 12:29:10,335 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:10,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:10,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 12:29:10,337 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:10,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:10,338 INFO L85 PathProgramCache]: Analyzing trace with hash 2098330218, now seen corresponding path program 1 times [2021-11-07 12:29:10,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:10,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305312719] [2021-11-07 12:29:10,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:10,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:10,479 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 12:29:10,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:10,480 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305312719] [2021-11-07 12:29:10,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305312719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:10,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:10,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:10,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117816373] [2021-11-07 12:29:10,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:10,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:10,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:10,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:10,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:10,486 INFO L87 Difference]: Start difference. First operand 7950 states and 10267 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 12:29:10,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:10,798 INFO L93 Difference]: Finished difference Result 7980 states and 10295 transitions. [2021-11-07 12:29:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:10,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-07 12:29:10,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:10,826 INFO L225 Difference]: With dead ends: 7980 [2021-11-07 12:29:10,827 INFO L226 Difference]: Without dead ends: 7965 [2021-11-07 12:29:10,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.66ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:10,829 INFO L933 BasicCegarLoop]: 5162 mSDtfsCounter, 5144 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5144 SdHoareTripleChecker+Valid, 5176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.66ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.22ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:10,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5144 Valid, 5176 Invalid, 6 Unknown, 0 Unchecked, 8.66ms Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 32.22ms Time] [2021-11-07 12:29:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2021-11-07 12:29:10,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7950. [2021-11-07 12:29:10,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7950 states, 7899 states have (on average 1.2925686795796936) internal successors, (10210), 7913 states have internal predecessors, (10210), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 12:29:11,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7950 states to 7950 states and 10266 transitions. [2021-11-07 12:29:11,024 INFO L78 Accepts]: Start accepts. Automaton has 7950 states and 10266 transitions. Word has length 17 [2021-11-07 12:29:11,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:11,024 INFO L470 AbstractCegarLoop]: Abstraction has 7950 states and 10266 transitions. [2021-11-07 12:29:11,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 12:29:11,025 INFO L276 IsEmpty]: Start isEmpty. Operand 7950 states and 10266 transitions. [2021-11-07 12:29:11,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 12:29:11,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:11,026 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:11,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 12:29:11,027 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:11,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 2098389800, now seen corresponding path program 1 times [2021-11-07 12:29:11,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:11,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142996698] [2021-11-07 12:29:11,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:11,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:11,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:11,131 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 12:29:11,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:11,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142996698] [2021-11-07 12:29:11,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142996698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:11,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:11,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:11,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099492190] [2021-11-07 12:29:11,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:11,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:11,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:11,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:11,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:11,135 INFO L87 Difference]: Start difference. First operand 7950 states and 10266 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 12:29:12,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:12,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:12,739 INFO L93 Difference]: Finished difference Result 7950 states and 10266 transitions. [2021-11-07 12:29:12,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:12,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2021-11-07 12:29:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:12,762 INFO L225 Difference]: With dead ends: 7950 [2021-11-07 12:29:12,763 INFO L226 Difference]: Without dead ends: 7948 [2021-11-07 12:29:12,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:12,766 INFO L933 BasicCegarLoop]: 5146 mSDtfsCounter, 5132 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1375.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5132 SdHoareTripleChecker+Valid, 5146 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.22ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1494.22ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:12,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5132 Valid, 5146 Invalid, 2 Unknown, 0 Unchecked, 6.22ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1494.22ms Time] [2021-11-07 12:29:12,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7948 states. [2021-11-07 12:29:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7948 to 7948. [2021-11-07 12:29:12,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7948 states, 7898 states have (on average 1.2924791086350975) internal successors, (10208), 7911 states have internal predecessors, (10208), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 12:29:12,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7948 states to 7948 states and 10264 transitions. [2021-11-07 12:29:12,932 INFO L78 Accepts]: Start accepts. Automaton has 7948 states and 10264 transitions. Word has length 17 [2021-11-07 12:29:12,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:12,933 INFO L470 AbstractCegarLoop]: Abstraction has 7948 states and 10264 transitions. [2021-11-07 12:29:12,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 12:29:12,933 INFO L276 IsEmpty]: Start isEmpty. Operand 7948 states and 10264 transitions. [2021-11-07 12:29:12,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 12:29:12,934 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:12,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:12,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 12:29:12,934 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:12,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:12,935 INFO L85 PathProgramCache]: Analyzing trace with hash 625585268, now seen corresponding path program 1 times [2021-11-07 12:29:12,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:12,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018274168] [2021-11-07 12:29:12,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:12,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:13,020 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 12:29:13,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:13,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018274168] [2021-11-07 12:29:13,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018274168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:13,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:13,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:13,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963918006] [2021-11-07 12:29:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:13,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:13,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:13,023 INFO L87 Difference]: Start difference. First operand 7948 states and 10264 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 12:29:14,418 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:14,674 INFO L93 Difference]: Finished difference Result 7948 states and 10264 transitions. [2021-11-07 12:29:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:14,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-07 12:29:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:14,705 INFO L225 Difference]: With dead ends: 7948 [2021-11-07 12:29:14,706 INFO L226 Difference]: Without dead ends: 7946 [2021-11-07 12:29:14,709 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 12:29:14,713 INFO L933 BasicCegarLoop]: 5144 mSDtfsCounter, 5129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1394.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5129 SdHoareTripleChecker+Valid, 5144 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1522.54ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:14,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5129 Valid, 5144 Invalid, 2 Unknown, 0 Unchecked, 7.48ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 1522.54ms Time] [2021-11-07 12:29:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2021-11-07 12:29:14,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7946. [2021-11-07 12:29:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7946 states, 7897 states have (on average 1.2923895150056983) internal successors, (10206), 7909 states have internal predecessors, (10206), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (28), 24 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-07 12:29:14,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7946 states to 7946 states and 10262 transitions. [2021-11-07 12:29:14,897 INFO L78 Accepts]: Start accepts. Automaton has 7946 states and 10262 transitions. Word has length 18 [2021-11-07 12:29:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:14,898 INFO L470 AbstractCegarLoop]: Abstraction has 7946 states and 10262 transitions. [2021-11-07 12:29:14,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 12:29:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 7946 states and 10262 transitions. [2021-11-07 12:29:14,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-07 12:29:14,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:14,899 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:14,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 12:29:14,900 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -965263938, now seen corresponding path program 1 times [2021-11-07 12:29:14,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:14,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680191697] [2021-11-07 12:29:14,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:14,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:14,987 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 12:29:14,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:14,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680191697] [2021-11-07 12:29:14,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680191697] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:14,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:14,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:14,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579886911] [2021-11-07 12:29:14,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:14,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:14,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:14,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:14,992 INFO L87 Difference]: Start difference. First operand 7946 states and 10262 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 12:29:15,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:15,417 INFO L93 Difference]: Finished difference Result 22833 states and 29483 transitions. [2021-11-07 12:29:15,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:15,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2021-11-07 12:29:15,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:15,455 INFO L225 Difference]: With dead ends: 22833 [2021-11-07 12:29:15,457 INFO L226 Difference]: Without dead ends: 14890 [2021-11-07 12:29:15,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:15,472 INFO L933 BasicCegarLoop]: 5164 mSDtfsCounter, 4487 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4487 SdHoareTripleChecker+Valid, 10291 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 44.25ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:15,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4487 Valid, 10291 Invalid, 17 Unknown, 0 Unchecked, 11.09ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 44.25ms Time] [2021-11-07 12:29:15,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14890 states. [2021-11-07 12:29:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14890 to 14873. [2021-11-07 12:29:15,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14873 states, 14782 states have (on average 1.2918414287647138) internal successors, (19096), 14800 states have internal predecessors, (19096), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (56), 48 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-07 12:29:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14873 states to 14873 states and 19208 transitions. [2021-11-07 12:29:15,800 INFO L78 Accepts]: Start accepts. Automaton has 14873 states and 19208 transitions. Word has length 18 [2021-11-07 12:29:15,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:15,801 INFO L470 AbstractCegarLoop]: Abstraction has 14873 states and 19208 transitions. [2021-11-07 12:29:15,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 12:29:15,801 INFO L276 IsEmpty]: Start isEmpty. Operand 14873 states and 19208 transitions. [2021-11-07 12:29:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-07 12:29:15,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:15,802 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 12:29:15,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 12:29:15,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:15,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2081682254, now seen corresponding path program 1 times [2021-11-07 12:29:15,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:15,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332155519] [2021-11-07 12:29:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:15,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:15,891 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 12:29:15,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:15,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332155519] [2021-11-07 12:29:15,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332155519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:15,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:15,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:15,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553339290] [2021-11-07 12:29:15,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:15,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:15,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:15,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:15,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:15,894 INFO L87 Difference]: Start difference. First operand 14873 states and 19208 transitions. 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 12:29:17,921 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 12:29:18,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:18,739 INFO L93 Difference]: Finished difference Result 44577 states and 57810 transitions. [2021-11-07 12:29:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:18,740 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 12:29:18,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:18,805 INFO L225 Difference]: With dead ends: 44577 [2021-11-07 12:29:18,806 INFO L226 Difference]: Without dead ends: 29707 [2021-11-07 12:29:18,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:18,834 INFO L933 BasicCegarLoop]: 5171 mSDtfsCounter, 5128 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2048.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5128 SdHoareTripleChecker+Valid, 10306 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.09ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2183.38ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:18,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5128 Valid, 10306 Invalid, 24 Unknown, 0 Unchecked, 14.09ms Time], IncrementalHoareTripleChecker [9 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 2183.38ms Time] [2021-11-07 12:29:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29707 states. [2021-11-07 12:29:19,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29707 to 29699. [2021-11-07 12:29:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29699 states, 29524 states have (on average 1.2917626337894594) internal successors, (38138), 29554 states have internal predecessors, (38138), 112 states have call successors, (112), 56 states have call predecessors, (112), 56 states have return successors, (224), 96 states have call predecessors, (224), 112 states have call successors, (224) [2021-11-07 12:29:19,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29699 states to 29699 states and 38474 transitions. [2021-11-07 12:29:19,627 INFO L78 Accepts]: Start accepts. Automaton has 29699 states and 38474 transitions. Word has length 19 [2021-11-07 12:29:19,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:19,627 INFO L470 AbstractCegarLoop]: Abstraction has 29699 states and 38474 transitions. [2021-11-07 12:29:19,627 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 12:29:19,628 INFO L276 IsEmpty]: Start isEmpty. Operand 29699 states and 38474 transitions. [2021-11-07 12:29:19,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-07 12:29:19,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:19,628 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] [2021-11-07 12:29:19,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 12:29:19,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:19,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:19,631 INFO L85 PathProgramCache]: Analyzing trace with hash -107629506, now seen corresponding path program 1 times [2021-11-07 12:29:19,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:19,631 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210590648] [2021-11-07 12:29:19,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:19,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:19,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:19,720 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 12:29:19,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:19,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210590648] [2021-11-07 12:29:19,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210590648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:19,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:19,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:19,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607250661] [2021-11-07 12:29:19,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:19,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:19,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:19,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:19,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:19,722 INFO L87 Difference]: Start difference. First operand 29699 states and 38474 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 12:29:21,747 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:22,505 INFO L93 Difference]: Finished difference Result 29699 states and 38474 transitions. [2021-11-07 12:29:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2021-11-07 12:29:22,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:22,567 INFO L225 Difference]: With dead ends: 29699 [2021-11-07 12:29:22,567 INFO L226 Difference]: Without dead ends: 29697 [2021-11-07 12:29:22,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:22,583 INFO L933 BasicCegarLoop]: 5142 mSDtfsCounter, 5125 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2025.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5125 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.76ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2201.51ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:22,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5125 Valid, 5142 Invalid, 2 Unknown, 0 Unchecked, 6.76ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2201.51ms Time] [2021-11-07 12:29:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29697 states. [2021-11-07 12:29:23,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29697 to 29697. [2021-11-07 12:29:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29697 states, 29523 states have (on average 1.2917386444467025) internal successors, (38136), 29552 states have internal predecessors, (38136), 112 states have call successors, (112), 56 states have call predecessors, (112), 56 states have return successors, (224), 96 states have call predecessors, (224), 112 states have call successors, (224) [2021-11-07 12:29:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29697 states to 29697 states and 38472 transitions. [2021-11-07 12:29:23,296 INFO L78 Accepts]: Start accepts. Automaton has 29697 states and 38472 transitions. Word has length 20 [2021-11-07 12:29:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:23,296 INFO L470 AbstractCegarLoop]: Abstraction has 29697 states and 38472 transitions. [2021-11-07 12:29:23,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 12:29:23,296 INFO L276 IsEmpty]: Start isEmpty. Operand 29697 states and 38472 transitions. [2021-11-07 12:29:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-07 12:29:23,297 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:23,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 12:29:23,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 12:29:23,298 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 958463548, now seen corresponding path program 1 times [2021-11-07 12:29:23,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:23,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014004685] [2021-11-07 12:29:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:23,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:23,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:23,372 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 12:29:23,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:23,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014004685] [2021-11-07 12:29:23,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014004685] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:23,373 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:23,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:23,373 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031134079] [2021-11-07 12:29:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:23,374 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:23,374 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:23,374 INFO L87 Difference]: Start difference. First operand 29697 states and 38472 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:24,851 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:25,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:25,327 INFO L93 Difference]: Finished difference Result 29697 states and 38472 transitions. [2021-11-07 12:29:25,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:25,502 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-07 12:29:25,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:25,563 INFO L225 Difference]: With dead ends: 29697 [2021-11-07 12:29:25,563 INFO L226 Difference]: Without dead ends: 29688 [2021-11-07 12:29:25,577 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:25,578 INFO L933 BasicCegarLoop]: 5141 mSDtfsCounter, 5122 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1475.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5122 SdHoareTripleChecker+Valid, 5141 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.45ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1475.83ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:25,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5122 Valid, 5141 Invalid, 1 Unknown, 0 Unchecked, 4.45ms Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 1475.83ms Time] [2021-11-07 12:29:25,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29688 states. [2021-11-07 12:29:26,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29688 to 29688. [2021-11-07 12:29:26,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29688 states, 29515 states have (on average 1.2916483144163984) internal successors, (38123), 29543 states have internal predecessors, (38123), 112 states have call successors, (112), 56 states have call predecessors, (112), 56 states have return successors, (224), 96 states have call predecessors, (224), 112 states have call successors, (224) [2021-11-07 12:29:26,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29688 states to 29688 states and 38459 transitions. [2021-11-07 12:29:26,449 INFO L78 Accepts]: Start accepts. Automaton has 29688 states and 38459 transitions. Word has length 21 [2021-11-07 12:29:26,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:26,451 INFO L470 AbstractCegarLoop]: Abstraction has 29688 states and 38459 transitions. [2021-11-07 12:29:26,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:26,451 INFO L276 IsEmpty]: Start isEmpty. Operand 29688 states and 38459 transitions. [2021-11-07 12:29:26,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-07 12:29:26,457 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:26,457 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 12:29:26,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 12:29:26,457 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:26,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:26,458 INFO L85 PathProgramCache]: Analyzing trace with hash 330126008, now seen corresponding path program 1 times [2021-11-07 12:29:26,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:26,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772800828] [2021-11-07 12:29:26,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:26,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:26,549 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 12:29:26,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:26,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772800828] [2021-11-07 12:29:26,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772800828] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:26,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:26,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:26,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917097010] [2021-11-07 12:29:26,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:26,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:26,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:26,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:26,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:26,551 INFO L87 Difference]: Start difference. First operand 29688 states and 38459 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 12:29:28,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 12:29:29,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:29,332 INFO L93 Difference]: Finished difference Result 73269 states and 94936 transitions. [2021-11-07 12:29:29,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:29,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2021-11-07 12:29:29,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:29,414 INFO L225 Difference]: With dead ends: 73269 [2021-11-07 12:29:29,415 INFO L226 Difference]: Without dead ends: 43584 [2021-11-07 12:29:29,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.72ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:29,468 INFO L933 BasicCegarLoop]: 9616 mSDtfsCounter, 4492 mSDsluCounter, 5122 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1695.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4492 SdHoareTripleChecker+Valid, 14738 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.29ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1877.07ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:29,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4492 Valid, 14738 Invalid, 25 Unknown, 0 Unchecked, 9.29ms Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1877.07ms Time] [2021-11-07 12:29:29,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43584 states. [2021-11-07 12:29:30,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43584 to 43572. [2021-11-07 12:29:30,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43572 states, 43315 states have (on average 1.2916310746854438) internal successors, (55947), 43355 states have internal predecessors, (55947), 168 states have call successors, (168), 84 states have call predecessors, (168), 84 states have return successors, (336), 144 states have call predecessors, (336), 168 states have call successors, (336) [2021-11-07 12:29:30,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43572 states to 43572 states and 56451 transitions. [2021-11-07 12:29:30,852 INFO L78 Accepts]: Start accepts. Automaton has 43572 states and 56451 transitions. Word has length 41 [2021-11-07 12:29:30,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:30,853 INFO L470 AbstractCegarLoop]: Abstraction has 43572 states and 56451 transitions. [2021-11-07 12:29:30,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 12:29:30,853 INFO L276 IsEmpty]: Start isEmpty. Operand 43572 states and 56451 transitions. [2021-11-07 12:29:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 12:29:30,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:30,864 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 12:29:30,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 12:29:30,864 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:30,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1971159366, now seen corresponding path program 1 times [2021-11-07 12:29:30,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:30,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157828759] [2021-11-07 12:29:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:30,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:30,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:30,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:29:30,981 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:30,981 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157828759] [2021-11-07 12:29:30,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157828759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:30,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:30,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 12:29:30,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669233643] [2021-11-07 12:29:30,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:30,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:29:30,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:30,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:29:30,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:29:30,983 INFO L87 Difference]: Start difference. First operand 43572 states and 56451 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 12:29:33,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:33,273 INFO L93 Difference]: Finished difference Result 122969 states and 159335 transitions. [2021-11-07 12:29:33,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 12:29:33,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 53 [2021-11-07 12:29:33,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:33,447 INFO L225 Difference]: With dead ends: 122969 [2021-11-07 12:29:33,447 INFO L226 Difference]: Without dead ends: 79400 [2021-11-07 12:29:33,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.11ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:33,513 INFO L933 BasicCegarLoop]: 8892 mSDtfsCounter, 4175 mSDsluCounter, 14020 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4180 SdHoareTripleChecker+Valid, 22912 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.44ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 43.21ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:33,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4180 Valid, 22912 Invalid, 26 Unknown, 0 Unchecked, 21.44ms Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 43.21ms Time] [2021-11-07 12:29:33,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79400 states. [2021-11-07 12:29:35,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79400 to 43584. [2021-11-07 12:29:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43584 states, 43327 states have (on average 1.291550303505897) internal successors, (55959), 43367 states have internal predecessors, (55959), 168 states have call successors, (168), 84 states have call predecessors, (168), 84 states have return successors, (336), 144 states have call predecessors, (336), 168 states have call successors, (336) [2021-11-07 12:29:35,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43584 states to 43584 states and 56463 transitions. [2021-11-07 12:29:35,243 INFO L78 Accepts]: Start accepts. Automaton has 43584 states and 56463 transitions. Word has length 53 [2021-11-07 12:29:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:35,243 INFO L470 AbstractCegarLoop]: Abstraction has 43584 states and 56463 transitions. [2021-11-07 12:29:35,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 12:29:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 43584 states and 56463 transitions. [2021-11-07 12:29:35,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-11-07 12:29:35,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:35,254 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-11-07 12:29:35,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 12:29:35,254 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:35,255 INFO L85 PathProgramCache]: Analyzing trace with hash 2028417668, now seen corresponding path program 1 times [2021-11-07 12:29:35,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:35,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539500297] [2021-11-07 12:29:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:35,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-07 12:29:35,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:35,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539500297] [2021-11-07 12:29:35,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539500297] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:35,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:35,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:35,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031223396] [2021-11-07 12:29:35,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:35,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 12:29:35,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:35,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 12:29:35,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 12:29:35,417 INFO L87 Difference]: Start difference. First operand 43584 states and 56463 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 12:29:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:38,217 INFO L93 Difference]: Finished difference Result 119757 states and 155256 transitions. [2021-11-07 12:29:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 12:29:38,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 53 [2021-11-07 12:29:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:38,372 INFO L225 Difference]: With dead ends: 119757 [2021-11-07 12:29:38,373 INFO L226 Difference]: Without dead ends: 76176 [2021-11-07 12:29:38,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 12:29:38,448 INFO L933 BasicCegarLoop]: 8280 mSDtfsCounter, 8282 mSDsluCounter, 4537 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8282 SdHoareTripleChecker+Valid, 12817 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.61ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.60ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:38,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8282 Valid, 12817 Invalid, 13 Unknown, 0 Unchecked, 15.61ms Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 25.60ms Time] [2021-11-07 12:29:38,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76176 states. [2021-11-07 12:29:40,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76176 to 41729. [2021-11-07 12:29:40,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41729 states, 41474 states have (on average 1.2918454935622317) internal successors, (53578), 41512 states have internal predecessors, (53578), 168 states have call successors, (168), 84 states have call predecessors, (168), 84 states have return successors, (336), 144 states have call predecessors, (336), 168 states have call successors, (336) [2021-11-07 12:29:40,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41729 states to 41729 states and 54082 transitions. [2021-11-07 12:29:40,427 INFO L78 Accepts]: Start accepts. Automaton has 41729 states and 54082 transitions. Word has length 53 [2021-11-07 12:29:40,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:40,427 INFO L470 AbstractCegarLoop]: Abstraction has 41729 states and 54082 transitions. [2021-11-07 12:29:40,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 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 12:29:40,428 INFO L276 IsEmpty]: Start isEmpty. Operand 41729 states and 54082 transitions. [2021-11-07 12:29:40,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-07 12:29:40,438 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:40,438 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] [2021-11-07 12:29:40,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 12:29:40,438 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:40,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:40,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1507639419, now seen corresponding path program 1 times [2021-11-07 12:29:40,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:40,439 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230948706] [2021-11-07 12:29:40,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:40,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:40,509 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 12:29:40,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:40,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230948706] [2021-11-07 12:29:40,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230948706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:40,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:40,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:40,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101457671] [2021-11-07 12:29:40,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:40,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:40,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:40,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:40,511 INFO L87 Difference]: Start difference. First operand 41729 states and 54082 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 12:29:43,623 INFO L93 Difference]: Finished difference Result 123738 states and 160320 transitions. [2021-11-07 12:29:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 12:29:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2021-11-07 12:29:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 12:29:43,787 INFO L225 Difference]: With dead ends: 123738 [2021-11-07 12:29:43,788 INFO L226 Difference]: Without dead ends: 82012 [2021-11-07 12:29:43,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.77ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:43,864 INFO L933 BasicCegarLoop]: 4654 mSDtfsCounter, 4375 mSDsluCounter, 4528 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.40ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4375 SdHoareTripleChecker+Valid, 9182 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41.85ms IncrementalHoareTripleChecker+Time [2021-11-07 12:29:43,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4375 Valid, 9182 Invalid, 12 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 41.85ms Time] [2021-11-07 12:29:43,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82012 states. [2021-11-07 12:29:47,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82012 to 81989. [2021-11-07 12:29:47,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81989 states, 81518 states have (on average 1.2918496528374102) internal successors, (105309), 81592 states have internal predecessors, (105309), 300 states have call successors, (300), 168 states have call predecessors, (300), 168 states have return successors, (600), 252 states have call predecessors, (600), 300 states have call successors, (600) [2021-11-07 12:29:47,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81989 states to 81989 states and 106209 transitions. [2021-11-07 12:29:47,483 INFO L78 Accepts]: Start accepts. Automaton has 81989 states and 106209 transitions. Word has length 60 [2021-11-07 12:29:47,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 12:29:47,483 INFO L470 AbstractCegarLoop]: Abstraction has 81989 states and 106209 transitions. [2021-11-07 12:29:47,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 12:29:47,483 INFO L276 IsEmpty]: Start isEmpty. Operand 81989 states and 106209 transitions. [2021-11-07 12:29:47,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 12:29:47,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 12:29:47,511 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] [2021-11-07 12:29:47,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 12:29:47,512 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION === [dlfb_init_framebuffer_workErr0ASSERT_VIOLATIONERROR_FUNCTION, dlfb_init_framebuffer_workErr1ASSERT_VIOLATIONERROR_FUNCTION (and 7 more)] === [2021-11-07 12:29:47,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 12:29:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1494590329, now seen corresponding path program 1 times [2021-11-07 12:29:47,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 12:29:47,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525873531] [2021-11-07 12:29:47,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 12:29:47,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 12:29:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 12:29:47,615 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 12:29:47,616 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 12:29:47,616 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525873531] [2021-11-07 12:29:47,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525873531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 12:29:47,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 12:29:47,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 12:29:47,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212570772] [2021-11-07 12:29:47,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 12:29:47,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 12:29:47,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 12:29:47,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 12:29:47,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 12:29:47,617 INFO L87 Difference]: Start difference. First operand 81989 states and 106209 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)