./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 c36dfa3b 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-c36dfa3 [2021-11-04 03:11:59,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 03:11:59,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 03:11:59,400 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 03:11:59,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 03:11:59,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 03:11:59,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 03:11:59,407 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 03:11:59,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 03:11:59,412 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 03:11:59,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 03:11:59,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 03:11:59,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 03:11:59,415 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 03:11:59,417 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 03:11:59,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 03:11:59,421 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 03:11:59,421 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 03:11:59,423 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 03:11:59,429 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 03:11:59,430 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 03:11:59,431 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 03:11:59,432 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 03:11:59,433 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 03:11:59,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 03:11:59,438 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 03:11:59,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 03:11:59,440 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 03:11:59,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 03:11:59,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 03:11:59,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 03:11:59,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 03:11:59,443 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 03:11:59,444 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 03:11:59,445 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 03:11:59,445 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 03:11:59,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 03:11:59,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 03:11:59,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 03:11:59,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 03:11:59,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 03:11:59,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 03:11:59,471 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 03:11:59,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 03:11:59,472 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 03:11:59,472 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 03:11:59,473 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 03:11:59,473 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 03:11:59,474 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 03:11:59,474 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 03:11:59,474 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 03:11:59,474 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 03:11:59,475 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 03:11:59,475 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 03:11:59,475 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 03:11:59,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 03:11:59,475 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 03:11:59,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 03:11:59,476 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 03:11:59,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 03:11:59,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 03:11:59,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:11:59,476 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 03:11:59,476 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 03:11:59,477 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 03:11:59,478 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 818c635cf736ceef0cf6e46266c8f75f5ad55dd0b6a806d4c2f32c53e0369659 [2021-11-04 03:11:59,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 03:11:59,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 03:11:59,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 03:11:59,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 03:11:59,719 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 03:11:59,720 INFO L432 ainManager$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 [2021-11-04 03:11:59,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9250e4c8/6613ebc275de46d2be8d5c1934b09983/FLAG04bf87587 [2021-11-04 03:12:00,380 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 03:12:00,380 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 [2021-11-04 03:12:00,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9250e4c8/6613ebc275de46d2be8d5c1934b09983/FLAG04bf87587 [2021-11-04 03:12:00,796 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f9250e4c8/6613ebc275de46d2be8d5c1934b09983 [2021-11-04 03:12:00,798 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 03:12:00,799 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 03:12:00,801 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 03:12:00,801 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 03:12:00,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 03:12:00,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:12:00" (1/1) ... [2021-11-04 03:12:00,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5d6890 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:00, skipping insertion in model container [2021-11-04 03:12:00,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 03:12:00" (1/1) ... [2021-11-04 03:12:00,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 03:12:00,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 03:12:01,908 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] [2021-11-04 03:12:01,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:12:02,005 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 03:12:02,185 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] [2021-11-04 03:12:02,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 03:12:02,273 INFO L208 MainTranslator]: Completed translation [2021-11-04 03:12:02,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02 WrapperNode [2021-11-04 03:12:02,274 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 03:12:02,276 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 03:12:02,276 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 03:12:02,276 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 03:12:02,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:02,360 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,056 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 03:12:03,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 03:12:03,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 03:12:03,058 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 03:12:03,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,682 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:03,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:04,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 03:12:04,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 03:12:04,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 03:12:04,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 03:12:04,081 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (1/1) ... [2021-11-04 03:12:04,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 03:12:04,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 03:12:04,244 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) [2021-11-04 03:12:04,246 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 [2021-11-04 03:12:04,290 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-04 03:12:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-04 03:12:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 03:12:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 03:12:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer_work [2021-11-04 03:12:04,291 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer_work [2021-11-04 03:12:04,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 03:12:04,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 03:12:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_free_framebuffer [2021-11-04 03:12:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_free_framebuffer [2021-11-04 03:12:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 03:12:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_usb_disconnect [2021-11-04 03:12:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_usb_disconnect [2021-11-04 03:12:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-04 03:12:04,293 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-04 03:12:04,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 03:12:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 03:12:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:12:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-04 03:12:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure dlfb_init_framebuffer_work [2021-11-04 03:12:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure dlfb_init_framebuffer_work [2021-11-04 03:12:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 03:12:04,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 03:12:04,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 03:12:08,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 03:12:08,992 INFO L299 CfgBuilder]: Removed 4380 assume(true) statements. [2021-11-04 03:12:08,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:12:08 BoogieIcfgContainer [2021-11-04 03:12:08,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 03:12:08,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 03:12:08,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 03:12:09,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 03:12:09,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 03:12:00" (1/3) ... [2021-11-04 03:12:09,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a758937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:12:09, skipping insertion in model container [2021-11-04 03:12:09,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 03:12:02" (2/3) ... [2021-11-04 03:12:09,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a758937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 03:12:09, skipping insertion in model container [2021-11-04 03:12:09,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 03:12:08" (3/3) ... [2021-11-04 03:12:09,002 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--video--udlfb.ko-main.cil.out.i [2021-11-04 03:12:09,006 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 03:12:09,006 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-11-04 03:12:09,044 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 03:12:09,048 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 [2021-11-04 03:12:09,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-11-04 03:12:09,090 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) [2021-11-04 03:12:09,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-04 03:12:09,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:12:09,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:12:09,095 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)] === [2021-11-04 03:12:09,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:12:09,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1156347363, now seen corresponding path program 1 times [2021-11-04 03:12:09,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:12:09,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001599809] [2021-11-04 03:12:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:12:09,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:12:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:12:09,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:12:09,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:12:09,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001599809] [2021-11-04 03:12:09,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001599809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:12:09,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:12:09,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:12:09,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977571746] [2021-11-04 03:12:09,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:12:09,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:12:09,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:12:09,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:12:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:09,546 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) [2021-11-04 03:12:12,256 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:12:14,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:16,482 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:12:19,249 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:21,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:23,553 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:24,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:12:28,135 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:31,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:35,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:38,919 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:41,964 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:47,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:12:52,569 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:12:57,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:12:57,627 INFO L93 Difference]: Finished difference Result 12105 states and 15928 transitions. [2021-11-04 03:12:57,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:12:57,629 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 [2021-11-04 03:12:57,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:12:57,667 INFO L225 Difference]: With dead ends: 12105 [2021-11-04 03:12:57,667 INFO L226 Difference]: Without dead ends: 7827 [2021-11-04 03:12:57,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.02ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:57,688 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 5117 mSDsluCounter, 5318 mSDsCounter, 0 mSdLazyCounter, 10415 mSolverCounterSat, 3 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44254.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5118 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 10430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 34.97ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10415 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47496.58ms IncrementalHoareTripleChecker+Time [2021-11-04 03:12:57,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5118 Valid, 258 Invalid, 10430 Unknown, 0 Unchecked, 34.97ms Time], IncrementalHoareTripleChecker [3 Valid, 10415 Invalid, 12 Unknown, 0 Unchecked, 47496.58ms Time] [2021-11-04 03:12:57,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7827 states. [2021-11-04 03:12:57,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7827 to 7778. [2021-11-04 03:12:57,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7778 states, 7727 states have (on average 1.2914455804322504) internal successors, (9979), 7741 states have internal predecessors, (9979), 28 states have call successors, (28), 14 states have call predecessors, (28), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2021-11-04 03:12:57,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 10036 transitions. [2021-11-04 03:12:57,955 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 10036 transitions. Word has length 13 [2021-11-04 03:12:57,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:12:57,956 INFO L470 AbstractCegarLoop]: Abstraction has 7778 states and 10036 transitions. [2021-11-04 03:12:57,956 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) [2021-11-04 03:12:57,957 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 10036 transitions. [2021-11-04 03:12:57,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-04 03:12:57,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:12:57,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:12:57,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 03:12:57,965 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)] === [2021-11-04 03:12:57,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:12:57,967 INFO L85 PathProgramCache]: Analyzing trace with hash 2098330218, now seen corresponding path program 1 times [2021-11-04 03:12:57,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:12:57,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858353283] [2021-11-04 03:12:57,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:12:57,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:12:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:12:58,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:12:58,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:12:58,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858353283] [2021-11-04 03:12:58,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858353283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:12:58,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:12:58,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:12:58,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574095364] [2021-11-04 03:12:58,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:12:58,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:12:58,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:12:58,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:12:58,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:12:58,120 INFO L87 Difference]: Start difference. First operand 7778 states and 10036 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) [2021-11-04 03:13:00,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:03,627 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:05,752 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:08,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:10,631 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:14,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:17,578 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:21,172 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:30,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:33,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:43,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:13:43,902 INFO L93 Difference]: Finished difference Result 15446 states and 19916 transitions. [2021-11-04 03:13:43,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:13:43,903 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 [2021-11-04 03:13:43,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:13:43,975 INFO L225 Difference]: With dead ends: 15446 [2021-11-04 03:13:43,976 INFO L226 Difference]: Without dead ends: 15431 [2021-11-04 03:13:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.05ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:13:43,989 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 4981 mSDsluCounter, 5132 mSDsCounter, 0 mSdLazyCounter, 10232 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41301.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4982 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10232 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45106.09ms IncrementalHoareTripleChecker+Time [2021-11-04 03:13:43,990 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4982 Valid, 70 Invalid, 10244 Unknown, 0 Unchecked, 36.21ms Time], IncrementalHoareTripleChecker [2 Valid, 10232 Invalid, 10 Unknown, 0 Unchecked, 45106.09ms Time] [2021-11-04 03:13:44,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15431 states. [2021-11-04 03:13:44,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15431 to 15361. [2021-11-04 03:13:44,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15361 states, 15268 states have (on average 1.2910662824207493) internal successors, (19712), 15288 states have internal predecessors, (19712), 56 states have call successors, (56), 28 states have call predecessors, (56), 28 states have return successors, (60), 48 states have call predecessors, (60), 56 states have call successors, (60) [2021-11-04 03:13:44,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15361 states to 15361 states and 19828 transitions. [2021-11-04 03:13:44,386 INFO L78 Accepts]: Start accepts. Automaton has 15361 states and 19828 transitions. Word has length 17 [2021-11-04 03:13:44,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:13:44,386 INFO L470 AbstractCegarLoop]: Abstraction has 15361 states and 19828 transitions. [2021-11-04 03:13:44,387 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) [2021-11-04 03:13:44,387 INFO L276 IsEmpty]: Start isEmpty. Operand 15361 states and 19828 transitions. [2021-11-04 03:13:44,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-04 03:13:44,388 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:13:44,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:13:44,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 03:13:44,389 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)] === [2021-11-04 03:13:44,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:13:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2098389800, now seen corresponding path program 1 times [2021-11-04 03:13:44,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:13:44,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566765516] [2021-11-04 03:13:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:13:44,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:13:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:13:44,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:13:44,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:13:44,488 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566765516] [2021-11-04 03:13:44,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566765516] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:13:44,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:13:44,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:13:44,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256476577] [2021-11-04 03:13:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:13:44,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:13:44,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:13:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:13:44,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:13:44,490 INFO L87 Difference]: Start difference. First operand 15361 states and 19828 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) [2021-11-04 03:13:47,612 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:49,725 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:13:52,358 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:54,617 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:13:57,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:00,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:02,972 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:14:06,286 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:15,352 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:17,792 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:14:20,659 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:24,171 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:14:33,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:14:33,936 INFO L93 Difference]: Finished difference Result 30532 states and 39398 transitions. [2021-11-04 03:14:33,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:14:33,936 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 [2021-11-04 03:14:33,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:14:34,024 INFO L225 Difference]: With dead ends: 30532 [2021-11-04 03:14:34,024 INFO L226 Difference]: Without dead ends: 30530 [2021-11-04 03:14:34,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.59ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:14:34,047 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 4960 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 10208 mSolverCounterSat, 1 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44426.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4961 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.34ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10208 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48724.61ms IncrementalHoareTripleChecker+Time [2021-11-04 03:14:34,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4961 Valid, 70 Invalid, 10220 Unknown, 0 Unchecked, 25.34ms Time], IncrementalHoareTripleChecker [1 Valid, 10208 Invalid, 11 Unknown, 0 Unchecked, 48724.61ms Time] [2021-11-04 03:14:34,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30530 states. [2021-11-04 03:14:34,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30530 to 30472. [2021-11-04 03:14:34,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30472 states, 30295 states have (on average 1.2904769763987456) internal successors, (39095), 30327 states have internal predecessors, (39095), 112 states have call successors, (112), 56 states have call predecessors, (112), 56 states have return successors, (122), 96 states have call predecessors, (122), 112 states have call successors, (122) [2021-11-04 03:14:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30472 states to 30472 states and 39329 transitions. [2021-11-04 03:14:34,698 INFO L78 Accepts]: Start accepts. Automaton has 30472 states and 39329 transitions. Word has length 17 [2021-11-04 03:14:34,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:14:34,699 INFO L470 AbstractCegarLoop]: Abstraction has 30472 states and 39329 transitions. [2021-11-04 03:14:34,699 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) [2021-11-04 03:14:34,699 INFO L276 IsEmpty]: Start isEmpty. Operand 30472 states and 39329 transitions. [2021-11-04 03:14:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 03:14:34,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:14:34,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:14:34,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 03:14:34,700 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)] === [2021-11-04 03:14:34,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:14:34,701 INFO L85 PathProgramCache]: Analyzing trace with hash 625585268, now seen corresponding path program 1 times [2021-11-04 03:14:34,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:14:34,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932549532] [2021-11-04 03:14:34,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:14:34,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:14:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:14:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:14:34,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:14:34,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932549532] [2021-11-04 03:14:34,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932549532] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:14:34,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:14:34,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:14:34,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983098583] [2021-11-04 03:14:34,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:14:34,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:14:34,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:14:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:14:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:14:34,824 INFO L87 Difference]: Start difference. First operand 30472 states and 39329 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) [2021-11-04 03:14:37,796 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:14:39,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:42,017 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:14:44,857 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:48,505 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:50,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:53,833 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:14:56,207 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:15:05,779 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:15:13,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:15:21,794 INFO L93 Difference]: Finished difference Result 60739 states and 78384 transitions. [2021-11-04 03:15:21,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:15:21,796 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 [2021-11-04 03:15:21,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:15:21,917 INFO L225 Difference]: With dead ends: 60739 [2021-11-04 03:15:21,917 INFO L226 Difference]: Without dead ends: 60737 [2021-11-04 03:15:21,945 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:15:21,947 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5013 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 10214 mSolverCounterSat, 1 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41437.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5014 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 26.07ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10214 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45920.24ms IncrementalHoareTripleChecker+Time [2021-11-04 03:15:21,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5014 Valid, 70 Invalid, 10225 Unknown, 0 Unchecked, 26.07ms Time], IncrementalHoareTripleChecker [1 Valid, 10214 Invalid, 10 Unknown, 0 Unchecked, 45920.24ms Time] [2021-11-04 03:15:21,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60737 states. [2021-11-04 03:15:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60737 to 60687. [2021-11-04 03:15:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60687 states, 60342 states have (on average 1.2901793112591562) internal successors, (77852), 60398 states have internal predecessors, (77852), 224 states have call successors, (224), 112 states have call predecessors, (224), 112 states have return successors, (253), 192 states have call predecessors, (253), 224 states have call successors, (253) [2021-11-04 03:15:23,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60687 states to 60687 states and 78329 transitions. [2021-11-04 03:15:23,198 INFO L78 Accepts]: Start accepts. Automaton has 60687 states and 78329 transitions. Word has length 18 [2021-11-04 03:15:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:15:23,199 INFO L470 AbstractCegarLoop]: Abstraction has 60687 states and 78329 transitions. [2021-11-04 03:15:23,199 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) [2021-11-04 03:15:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 60687 states and 78329 transitions. [2021-11-04 03:15:23,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-04 03:15:23,199 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:15:23,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:15:23,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 03:15:23,200 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)] === [2021-11-04 03:15:23,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:15:23,200 INFO L85 PathProgramCache]: Analyzing trace with hash -965263938, now seen corresponding path program 1 times [2021-11-04 03:15:23,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:15:23,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600216638] [2021-11-04 03:15:23,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:15:23,201 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:15:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:15:23,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:15:23,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:15:23,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600216638] [2021-11-04 03:15:23,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600216638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:15:23,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:15:23,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:15:23,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60145042] [2021-11-04 03:15:23,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:15:23,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:15:23,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:15:23,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:15:23,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:15:23,282 INFO L87 Difference]: Start difference. First operand 60687 states and 78329 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) [2021-11-04 03:15:26,900 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:29,050 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:15:31,940 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:34,413 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:41,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:45,372 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:15:49,646 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:15:55,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:15:58,091 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:00,497 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:11,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:16:11,169 INFO L93 Difference]: Finished difference Result 174663 states and 225429 transitions. [2021-11-04 03:16:11,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:16:11,169 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 [2021-11-04 03:16:11,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:16:11,477 INFO L225 Difference]: With dead ends: 174663 [2021-11-04 03:16:11,477 INFO L226 Difference]: Without dead ends: 113979 [2021-11-04 03:16:11,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:16:11,576 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 4402 mSDsluCounter, 5124 mSDsCounter, 0 mSdLazyCounter, 10234 mSolverCounterSat, 2 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41149.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4403 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10234 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45705.52ms IncrementalHoareTripleChecker+Time [2021-11-04 03:16:11,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4403 Valid, 70 Invalid, 10246 Unknown, 0 Unchecked, 22.16ms Time], IncrementalHoareTripleChecker [2 Valid, 10234 Invalid, 10 Unknown, 0 Unchecked, 45705.52ms Time] [2021-11-04 03:16:11,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113979 states. [2021-11-04 03:16:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113979 to 87325. [2021-11-04 03:16:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87325 states, 86812 states have (on average 1.2900290282449431) internal successors, (111990), 86892 states have internal predecessors, (111990), 336 states have call successors, (336), 168 states have call predecessors, (336), 168 states have return successors, (381), 288 states have call predecessors, (381), 336 states have call successors, (381) [2021-11-04 03:16:13,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87325 states to 87325 states and 112707 transitions. [2021-11-04 03:16:13,486 INFO L78 Accepts]: Start accepts. Automaton has 87325 states and 112707 transitions. Word has length 18 [2021-11-04 03:16:13,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:16:13,486 INFO L470 AbstractCegarLoop]: Abstraction has 87325 states and 112707 transitions. [2021-11-04 03:16:13,486 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) [2021-11-04 03:16:13,486 INFO L276 IsEmpty]: Start isEmpty. Operand 87325 states and 112707 transitions. [2021-11-04 03:16:13,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-04 03:16:13,487 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:16:13,487 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 03:16:13,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 03:16:13,488 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)] === [2021-11-04 03:16:13,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:16:13,488 INFO L85 PathProgramCache]: Analyzing trace with hash -2081682254, now seen corresponding path program 1 times [2021-11-04 03:16:13,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:16:13,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455927526] [2021-11-04 03:16:13,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:16:13,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:16:13,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:16:13,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:16:13,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:16:13,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455927526] [2021-11-04 03:16:13,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455927526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:16:13,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:16:13,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:16:13,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683673211] [2021-11-04 03:16:13,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:16:13,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:16:13,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:16:13,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:16:13,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:16:13,577 INFO L87 Difference]: Start difference. First operand 87325 states and 112707 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) [2021-11-04 03:16:15,845 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:18,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:21,947 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:16:24,802 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:32,115 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:16:33,902 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:36,238 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:16:45,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:16:48,436 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:17:03,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:17:03,556 INFO L93 Difference]: Finished difference Result 261677 states and 339313 transitions. [2021-11-04 03:17:03,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:17:03,557 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 [2021-11-04 03:17:03,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:17:04,148 INFO L225 Difference]: With dead ends: 261677 [2021-11-04 03:17:04,148 INFO L226 Difference]: Without dead ends: 174355 [2021-11-04 03:17:04,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:17:04,284 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 5043 mSDsluCounter, 5134 mSDsCounter, 0 mSdLazyCounter, 10224 mSolverCounterSat, 9 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41217.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5043 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 10239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.90ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10224 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46323.86ms IncrementalHoareTripleChecker+Time [2021-11-04 03:17:04,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5043 Valid, 98 Invalid, 10239 Unknown, 0 Unchecked, 21.90ms Time], IncrementalHoareTripleChecker [9 Valid, 10224 Invalid, 6 Unknown, 0 Unchecked, 46323.86ms Time] [2021-11-04 03:17:04,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174355 states. [2021-11-04 03:17:07,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174355 to 174268. [2021-11-04 03:17:07,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174268 states, 173251 states have (on average 1.2899146325273736) internal successors, (223479), 173403 states have internal predecessors, (223479), 672 states have call successors, (672), 336 states have call predecessors, (672), 336 states have return successors, (1524), 576 states have call predecessors, (1524), 672 states have call successors, (1524) [2021-11-04 03:17:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174268 states to 174268 states and 225675 transitions. [2021-11-04 03:17:08,713 INFO L78 Accepts]: Start accepts. Automaton has 174268 states and 225675 transitions. Word has length 19 [2021-11-04 03:17:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:17:08,713 INFO L470 AbstractCegarLoop]: Abstraction has 174268 states and 225675 transitions. [2021-11-04 03:17:08,714 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) [2021-11-04 03:17:08,714 INFO L276 IsEmpty]: Start isEmpty. Operand 174268 states and 225675 transitions. [2021-11-04 03:17:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-04 03:17:08,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:17:08,715 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] [2021-11-04 03:17:08,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-04 03:17:08,715 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)] === [2021-11-04 03:17:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:17:08,715 INFO L85 PathProgramCache]: Analyzing trace with hash -107629506, now seen corresponding path program 1 times [2021-11-04 03:17:08,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:17:08,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899938877] [2021-11-04 03:17:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:17:08,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:17:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:17:08,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:17:08,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:17:08,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899938877] [2021-11-04 03:17:08,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899938877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:17:08,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:17:08,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:17:08,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012886916] [2021-11-04 03:17:08,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:17:08,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:17:08,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:17:08,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:17:08,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:17:08,797 INFO L87 Difference]: Start difference. First operand 174268 states and 225675 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) [2021-11-04 03:17:11,657 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:17:13,793 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:17:15,922 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:17:18,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:17:25,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:17:28,676 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:17:32,819 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:17:40,075 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:17:42,893 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:17:46,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:18:03,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:18:03,927 INFO L93 Difference]: Finished difference Result 310736 states and 402425 transitions. [2021-11-04 03:18:03,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:18:03,927 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 [2021-11-04 03:18:03,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:18:05,135 INFO L225 Difference]: With dead ends: 310736 [2021-11-04 03:18:05,136 INFO L226 Difference]: Without dead ends: 310734 [2021-11-04 03:18:05,411 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 [2021-11-04 03:18:05,412 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 4987 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 10231 mSolverCounterSat, 1 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44212.30ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4988 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10231 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49958.64ms IncrementalHoareTripleChecker+Time [2021-11-04 03:18:05,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4988 Valid, 70 Invalid, 10241 Unknown, 0 Unchecked, 25.09ms Time], IncrementalHoareTripleChecker [1 Valid, 10231 Invalid, 9 Unknown, 0 Unchecked, 49958.64ms Time] [2021-11-04 03:18:05,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310734 states. [2021-11-04 03:18:11,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310734 to 287951. [2021-11-04 03:18:12,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287951 states, 286262 states have (on average 1.2898987640692792) internal successors, (369249), 286510 states have internal predecessors, (369249), 1120 states have call successors, (1120), 560 states have call predecessors, (1120), 560 states have return successors, (2548), 960 states have call predecessors, (2548), 1120 states have call successors, (2548) [2021-11-04 03:18:13,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287951 states to 287951 states and 372917 transitions. [2021-11-04 03:18:13,563 INFO L78 Accepts]: Start accepts. Automaton has 287951 states and 372917 transitions. Word has length 20 [2021-11-04 03:18:13,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 03:18:13,563 INFO L470 AbstractCegarLoop]: Abstraction has 287951 states and 372917 transitions. [2021-11-04 03:18:13,563 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) [2021-11-04 03:18:13,563 INFO L276 IsEmpty]: Start isEmpty. Operand 287951 states and 372917 transitions. [2021-11-04 03:18:13,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-04 03:18:13,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 03:18:13,564 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] [2021-11-04 03:18:13,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-04 03:18:13,565 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)] === [2021-11-04 03:18:13,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 03:18:13,565 INFO L85 PathProgramCache]: Analyzing trace with hash 958463548, now seen corresponding path program 1 times [2021-11-04 03:18:13,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 03:18:13,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615223666] [2021-11-04 03:18:13,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 03:18:13,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 03:18:13,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 03:18:13,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 03:18:13,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 03:18:13,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615223666] [2021-11-04 03:18:13,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615223666] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 03:18:13,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 03:18:13,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 03:18:13,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204535737] [2021-11-04 03:18:13,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 03:18:13,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 03:18:13,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 03:18:13,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 03:18:13,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:18:13,652 INFO L87 Difference]: Start difference. First operand 287951 states and 372917 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) [2021-11-04 03:18:15,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:18:18,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:18:20,849 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:18:23,751 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:18:30,658 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-04 03:18:33,002 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:18:37,112 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:18:55,928 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-04 03:18:58,321 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 03:19:12,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 03:19:12,397 INFO L93 Difference]: Finished difference Result 360265 states and 466590 transitions. [2021-11-04 03:19:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 03:19:12,401 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 [2021-11-04 03:19:12,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 03:19:13,727 INFO L225 Difference]: With dead ends: 360265 [2021-11-04 03:19:13,727 INFO L226 Difference]: Without dead ends: 360256 [2021-11-04 03:19:13,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.84ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 03:19:13,845 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 5041 mSDsluCounter, 5141 mSDsCounter, 0 mSdLazyCounter, 10240 mSolverCounterSat, 0 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45637.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5041 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 10248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.00ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10240 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52375.72ms IncrementalHoareTripleChecker+Time [2021-11-04 03:19:13,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5041 Valid, 70 Invalid, 10248 Unknown, 0 Unchecked, 35.00ms Time], IncrementalHoareTripleChecker [0 Valid, 10240 Invalid, 8 Unknown, 0 Unchecked, 52375.72ms Time] [2021-11-04 03:19:14,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360256 states.