./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 173e3943 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--gpu--drm--ast--ast.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 e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 13:39:22,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 13:39:22,793 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 13:39:22,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 13:39:22,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 13:39:22,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 13:39:22,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 13:39:22,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 13:39:22,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 13:39:22,844 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 13:39:22,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 13:39:22,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 13:39:22,846 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 13:39:22,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 13:39:22,849 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 13:39:22,853 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 13:39:22,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 13:39:22,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 13:39:22,856 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 13:39:22,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 13:39:22,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 13:39:22,861 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 13:39:22,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 13:39:22,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 13:39:22,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 13:39:22,868 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 13:39:22,868 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 13:39:22,869 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 13:39:22,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 13:39:22,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 13:39:22,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 13:39:22,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 13:39:22,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 13:39:22,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 13:39:22,874 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 13:39:22,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 13:39:22,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 13:39:22,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 13:39:22,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 13:39:22,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 13:39:22,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 13:39:22,877 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 13:39:22,900 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 13:39:22,900 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 13:39:22,901 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 13:39:22,901 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 13:39:22,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 13:39:22,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 13:39:22,902 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 13:39:22,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 13:39:22,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 13:39:22,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 13:39:22,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 13:39:22,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 13:39:22,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 13:39:22,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 13:39:22,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:39:22,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 13:39:22,905 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 13:39:22,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 13:39:22,906 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 13:39:22,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e37e45521ffb127b83b9baab443e42b7c078cf8a8451cb2a1813ac325e01717d [2021-11-06 13:39:23,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 13:39:23,120 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 13:39:23,122 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 13:39:23,123 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 13:39:23,124 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 13:39:23,124 INFO L432 ainManager$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--gpu--drm--ast--ast.ko-main.cil.out.i [2021-11-06 13:39:23,169 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e83c2632/73fc6028b51e4f1389b1d6aa2b75d5a5/FLAGed826cc51 [2021-11-06 13:39:23,846 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 13:39:23,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-11-06 13:39:23,898 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e83c2632/73fc6028b51e4f1389b1d6aa2b75d5a5/FLAGed826cc51 [2021-11-06 13:39:24,206 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e83c2632/73fc6028b51e4f1389b1d6aa2b75d5a5 [2021-11-06 13:39:24,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 13:39:24,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 13:39:24,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 13:39:24,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 13:39:24,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 13:39:24,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:39:24" (1/1) ... [2021-11-06 13:39:24,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a66a251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:24, skipping insertion in model container [2021-11-06 13:39:24,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 01:39:24" (1/1) ... [2021-11-06 13:39:24,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 13:39:24,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 13:39:26,331 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--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-11-06 13:39:26,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:39:26,541 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 13:39:26,812 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--gpu--drm--ast--ast.ko-main.cil.out.i[353005,353018] [2021-11-06 13:39:26,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 13:39:26,992 INFO L208 MainTranslator]: Completed translation [2021-11-06 13:39:26,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26 WrapperNode [2021-11-06 13:39:26,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 13:39:26,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 13:39:26,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 13:39:26,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 13:39:27,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:27,080 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:29,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 13:39:29,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 13:39:29,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 13:39:29,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 13:39:29,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:29,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:29,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:29,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:30,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:31,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:31,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:31,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 13:39:31,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 13:39:31,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 13:39:31,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 13:39:31,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (1/1) ... [2021-11-06 13:39:31,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 13:39:31,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 13:39:31,615 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) [2021-11-06 13:39:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 13:39:31,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 13:39:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 13:39:31,642 INFO L130 BoogieDeclarations]: Found specification of procedure ast_user_framebuffer_destroy [2021-11-06 13:39:31,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ast_user_framebuffer_destroy [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2021-11-06 13:39:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 13:39:31,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-06 13:39:31,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 13:39:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 13:39:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure kref_sub [2021-11-06 13:39:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_sub [2021-11-06 13:39:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 13:39:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 13:39:31,644 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_unreference_unlocked [2021-11-06 13:39:31,644 INFO L138 BoogieDeclarations]: Found implementation of procedure drm_gem_object_unreference_unlocked [2021-11-06 13:39:31,631 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 [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure drm_gem_object_free [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure ttm_bo_global_release [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 13:39:31,645 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 13:39:31,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 13:40:11,133 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint ast_gem_init_object_returnLabel: main_#t~ret100 := ast_gem_init_object_#res;assume -2147483648 <= main_#t~ret100 && main_#t~ret100 <= 2147483647;havoc main_#t~ret100;~ldv_state_variable_13~0 := 1; [2021-11-06 13:40:11,182 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 13:40:11,183 INFO L299 CfgBuilder]: Removed 20124 assume(true) statements. [2021-11-06 13:40:11,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:40:11 BoogieIcfgContainer [2021-11-06 13:40:11,194 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 13:40:11,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 13:40:11,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 13:40:11,199 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 13:40:11,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 01:39:24" (1/3) ... [2021-11-06 13:40:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0121df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:40:11, skipping insertion in model container [2021-11-06 13:40:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 01:39:26" (2/3) ... [2021-11-06 13:40:11,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0121df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 01:40:11, skipping insertion in model container [2021-11-06 13:40:11,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 01:40:11" (3/3) ... [2021-11-06 13:40:11,202 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--gpu--drm--ast--ast.ko-main.cil.out.i [2021-11-06 13:40:11,206 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 13:40:11,206 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-06 13:40:11,269 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 13:40:11,273 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 [2021-11-06 13:40:11,274 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-06 13:40:11,391 INFO L276 IsEmpty]: Start isEmpty. Operand has 12024 states, 11973 states have (on average 1.1811576046103733) internal successors, (14142), 12003 states have internal predecessors, (14142), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-06 13:40:11,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-06 13:40:11,397 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:11,398 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:11,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:11,402 INFO L85 PathProgramCache]: Analyzing trace with hash -838659541, now seen corresponding path program 1 times [2021-11-06 13:40:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:11,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547413186] [2021-11-06 13:40:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:11,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:11,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:11,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:11,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547413186] [2021-11-06 13:40:11,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547413186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:11,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:11,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:11,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579239349] [2021-11-06 13:40:11,899 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:11,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:11,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:11,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:11,927 INFO L87 Difference]: Start difference. First operand has 12024 states, 11973 states have (on average 1.1811576046103733) internal successors, (14142), 12003 states have internal predecessors, (14142), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-06 13:40:14,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:14,631 INFO L93 Difference]: Finished difference Result 36034 states and 42507 transitions. [2021-11-06 13:40:14,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:14,633 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2021-11-06 13:40:14,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:14,716 INFO L225 Difference]: With dead ends: 36034 [2021-11-06 13:40:14,716 INFO L226 Difference]: Without dead ends: 24007 [2021-11-06 13:40:14,749 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:14,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24007 states. [2021-11-06 13:40:15,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24007 to 23963. [2021-11-06 13:40:15,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23963 states, 23892 states have (on average 1.1758747697974217) internal successors, (28094), 23922 states have internal predecessors, (28094), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-06 13:40:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23963 states to 23963 states and 28158 transitions. [2021-11-06 13:40:15,495 INFO L78 Accepts]: Start accepts. Automaton has 23963 states and 28158 transitions. Word has length 15 [2021-11-06 13:40:15,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:15,496 INFO L470 AbstractCegarLoop]: Abstraction has 23963 states and 28158 transitions. [2021-11-06 13:40:15,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-11-06 13:40:15,496 INFO L276 IsEmpty]: Start isEmpty. Operand 23963 states and 28158 transitions. [2021-11-06 13:40:15,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-06 13:40:15,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:15,502 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:15,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 13:40:15,503 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:15,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:15,505 INFO L85 PathProgramCache]: Analyzing trace with hash -618363749, now seen corresponding path program 1 times [2021-11-06 13:40:15,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:15,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714152684] [2021-11-06 13:40:15,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:15,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:15,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:15,737 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714152684] [2021-11-06 13:40:15,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714152684] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:15,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:15,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:15,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386041810] [2021-11-06 13:40:15,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:15,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:15,740 INFO L87 Difference]: Start difference. First operand 23963 states and 28158 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) [2021-11-06 13:40:18,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:18,568 INFO L93 Difference]: Finished difference Result 23963 states and 28158 transitions. [2021-11-06 13:40:18,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:18,568 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 [2021-11-06 13:40:18,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:18,619 INFO L225 Difference]: With dead ends: 23963 [2021-11-06 13:40:18,619 INFO L226 Difference]: Without dead ends: 23961 [2021-11-06 13:40:18,629 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23961 states. [2021-11-06 13:40:19,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23961 to 23961. [2021-11-06 13:40:19,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23961 states, 23891 states have (on average 1.175840274580386) internal successors, (28092), 23920 states have internal predecessors, (28092), 32 states have call successors, (32), 10 states have call predecessors, (32), 10 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-11-06 13:40:19,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23961 states to 23961 states and 28156 transitions. [2021-11-06 13:40:19,159 INFO L78 Accepts]: Start accepts. Automaton has 23961 states and 28156 transitions. Word has length 20 [2021-11-06 13:40:19,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:19,159 INFO L470 AbstractCegarLoop]: Abstraction has 23961 states and 28156 transitions. [2021-11-06 13:40:19,160 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) [2021-11-06 13:40:19,160 INFO L276 IsEmpty]: Start isEmpty. Operand 23961 states and 28156 transitions. [2021-11-06 13:40:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-06 13:40:19,161 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:19,162 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:19,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 13:40:19,166 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:19,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2054184779, now seen corresponding path program 1 times [2021-11-06 13:40:19,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:19,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535963481] [2021-11-06 13:40:19,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:19,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:19,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:19,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:19,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:19,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535963481] [2021-11-06 13:40:19,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535963481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:19,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:19,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:19,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744812412] [2021-11-06 13:40:19,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:19,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:19,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:19,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:19,486 INFO L87 Difference]: Start difference. First operand 23961 states and 28156 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) [2021-11-06 13:40:20,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:20,580 INFO L93 Difference]: Finished difference Result 71066 states and 83376 transitions. [2021-11-06 13:40:20,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:20,580 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 [2021-11-06 13:40:20,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:20,679 INFO L225 Difference]: With dead ends: 71066 [2021-11-06 13:40:20,680 INFO L226 Difference]: Without dead ends: 47108 [2021-11-06 13:40:20,733 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:20,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47108 states. [2021-11-06 13:40:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47108 to 47056. [2021-11-06 13:40:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47056 states, 46952 states have (on average 1.1729851763503152) internal successors, (55074), 46983 states have internal predecessors, (55074), 56 states have call successors, (56), 20 states have call predecessors, (56), 20 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-06 13:40:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47056 states to 47056 states and 55186 transitions. [2021-11-06 13:40:22,063 INFO L78 Accepts]: Start accepts. Automaton has 47056 states and 55186 transitions. Word has length 20 [2021-11-06 13:40:22,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:22,064 INFO L470 AbstractCegarLoop]: Abstraction has 47056 states and 55186 transitions. [2021-11-06 13:40:22,064 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) [2021-11-06 13:40:22,064 INFO L276 IsEmpty]: Start isEmpty. Operand 47056 states and 55186 transitions. [2021-11-06 13:40:22,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-06 13:40:22,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:22,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:22,066 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 13:40:22,066 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:22,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:22,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1989376129, now seen corresponding path program 1 times [2021-11-06 13:40:22,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:22,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114806564] [2021-11-06 13:40:22,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:22,067 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:22,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:22,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:22,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114806564] [2021-11-06 13:40:22,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114806564] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:22,297 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:22,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:22,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608084960] [2021-11-06 13:40:22,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:22,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:22,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:22,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:22,299 INFO L87 Difference]: Start difference. First operand 47056 states and 55186 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) [2021-11-06 13:40:25,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:25,247 INFO L93 Difference]: Finished difference Result 47056 states and 55186 transitions. [2021-11-06 13:40:25,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:25,248 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 [2021-11-06 13:40:25,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:25,357 INFO L225 Difference]: With dead ends: 47056 [2021-11-06 13:40:25,357 INFO L226 Difference]: Without dead ends: 47054 [2021-11-06 13:40:25,379 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47054 states. [2021-11-06 13:40:26,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47054 to 47054. [2021-11-06 13:40:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47054 states, 46951 states have (on average 1.1729675619262636) internal successors, (55072), 46981 states have internal predecessors, (55072), 56 states have call successors, (56), 20 states have call predecessors, (56), 20 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-06 13:40:26,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47054 states to 47054 states and 55184 transitions. [2021-11-06 13:40:26,582 INFO L78 Accepts]: Start accepts. Automaton has 47054 states and 55184 transitions. Word has length 21 [2021-11-06 13:40:26,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:26,583 INFO L470 AbstractCegarLoop]: Abstraction has 47054 states and 55184 transitions. [2021-11-06 13:40:26,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:40:26,583 INFO L276 IsEmpty]: Start isEmpty. Operand 47054 states and 55184 transitions. [2021-11-06 13:40:26,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-06 13:40:26,584 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:26,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:26,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 13:40:26,585 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:26,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:26,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1541086939, now seen corresponding path program 1 times [2021-11-06 13:40:26,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:26,585 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428383643] [2021-11-06 13:40:26,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:26,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:26,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:26,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:26,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428383643] [2021-11-06 13:40:26,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428383643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:26,969 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:26,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:26,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198518745] [2021-11-06 13:40:26,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:26,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:26,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:26,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:26,971 INFO L87 Difference]: Start difference. First operand 47054 states and 55184 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-06 13:40:29,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:29,888 INFO L93 Difference]: Finished difference Result 47054 states and 55184 transitions. [2021-11-06 13:40:29,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:29,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 22 [2021-11-06 13:40:29,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:29,982 INFO L225 Difference]: With dead ends: 47054 [2021-11-06 13:40:29,982 INFO L226 Difference]: Without dead ends: 47052 [2021-11-06 13:40:30,003 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:30,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47052 states. [2021-11-06 13:40:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47052 to 47052. [2021-11-06 13:40:31,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47052 states, 46950 states have (on average 1.1729499467518636) internal successors, (55070), 46979 states have internal predecessors, (55070), 56 states have call successors, (56), 20 states have call predecessors, (56), 20 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2021-11-06 13:40:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47052 states to 47052 states and 55182 transitions. [2021-11-06 13:40:31,484 INFO L78 Accepts]: Start accepts. Automaton has 47052 states and 55182 transitions. Word has length 22 [2021-11-06 13:40:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:31,484 INFO L470 AbstractCegarLoop]: Abstraction has 47052 states and 55182 transitions. [2021-11-06 13:40:31,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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) [2021-11-06 13:40:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 47052 states and 55182 transitions. [2021-11-06 13:40:31,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:40:31,486 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:31,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:31,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-06 13:40:31,486 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:31,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:31,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1557476202, now seen corresponding path program 1 times [2021-11-06 13:40:31,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:31,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42471829] [2021-11-06 13:40:31,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:31,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:31,660 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:31,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42471829] [2021-11-06 13:40:31,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42471829] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:31,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:31,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:31,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155658089] [2021-11-06 13:40:31,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:31,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:31,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:31,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:31,662 INFO L87 Difference]: Start difference. First operand 47052 states and 55182 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:40:33,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:33,980 INFO L93 Difference]: Finished difference Result 141013 states and 165358 transitions. [2021-11-06 13:40:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:33,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 13:40:33,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:34,167 INFO L225 Difference]: With dead ends: 141013 [2021-11-06 13:40:34,167 INFO L226 Difference]: Without dead ends: 93964 [2021-11-06 13:40:34,249 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:34,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93964 states. [2021-11-06 13:40:36,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93964 to 93904. [2021-11-06 13:40:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93904 states, 93734 states have (on average 1.1727868222843365) internal successors, (109930), 93767 states have internal predecessors, (109930), 104 states have call successors, (104), 40 states have call predecessors, (104), 40 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 13:40:37,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93904 states to 93904 states and 110138 transitions. [2021-11-06 13:40:37,063 INFO L78 Accepts]: Start accepts. Automaton has 93904 states and 110138 transitions. Word has length 23 [2021-11-06 13:40:37,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:37,063 INFO L470 AbstractCegarLoop]: Abstraction has 93904 states and 110138 transitions. [2021-11-06 13:40:37,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:40:37,063 INFO L276 IsEmpty]: Start isEmpty. Operand 93904 states and 110138 transitions. [2021-11-06 13:40:37,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-06 13:40:37,065 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:37,065 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:37,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-06 13:40:37,065 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:37,066 INFO L85 PathProgramCache]: Analyzing trace with hash -529023927, now seen corresponding path program 1 times [2021-11-06 13:40:37,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:37,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088969128] [2021-11-06 13:40:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:37,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:37,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:37,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:37,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088969128] [2021-11-06 13:40:37,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088969128] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:37,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:37,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:37,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123870605] [2021-11-06 13:40:37,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:37,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:37,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:37,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:37,229 INFO L87 Difference]: Start difference. First operand 93904 states and 110138 transitions. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:40:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 13:40:41,415 INFO L93 Difference]: Finished difference Result 93904 states and 110138 transitions. [2021-11-06 13:40:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 13:40:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-06 13:40:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 13:40:41,578 INFO L225 Difference]: With dead ends: 93904 [2021-11-06 13:40:41,579 INFO L226 Difference]: Without dead ends: 93902 [2021-11-06 13:40:41,615 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:41,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93902 states. [2021-11-06 13:40:44,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93902 to 93902. [2021-11-06 13:40:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93902 states, 93733 states have (on average 1.1727779970768033) internal successors, (109928), 93765 states have internal predecessors, (109928), 104 states have call successors, (104), 40 states have call predecessors, (104), 40 states have return successors, (104), 104 states have call predecessors, (104), 104 states have call successors, (104) [2021-11-06 13:40:44,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93902 states to 93902 states and 110136 transitions. [2021-11-06 13:40:44,417 INFO L78 Accepts]: Start accepts. Automaton has 93902 states and 110136 transitions. Word has length 23 [2021-11-06 13:40:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 13:40:44,417 INFO L470 AbstractCegarLoop]: Abstraction has 93902 states and 110136 transitions. [2021-11-06 13:40:44,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-06 13:40:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 93902 states and 110136 transitions. [2021-11-06 13:40:44,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-06 13:40:44,419 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 13:40:44,420 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-06 13:40:44,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-06 13:40:44,420 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [drm_gem_object_unreference_unlockedErr0ASSERT_VIOLATIONERROR_FUNCTION, drm_gem_object_unreference_unlockedErr1ASSERT_VIOLATIONERROR_FUNCTION (and 27 more)] === [2021-11-06 13:40:44,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 13:40:44,421 INFO L85 PathProgramCache]: Analyzing trace with hash 780158383, now seen corresponding path program 1 times [2021-11-06 13:40:44,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 13:40:44,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8575247] [2021-11-06 13:40:44,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 13:40:44,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 13:40:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 13:40:44,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 13:40:44,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 13:40:44,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8575247] [2021-11-06 13:40:44,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8575247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 13:40:44,581 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 13:40:44,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 13:40:44,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507331801] [2021-11-06 13:40:44,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 13:40:44,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 13:40:44,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 13:40:44,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 13:40:44,583 INFO L87 Difference]: Start difference. First operand 93902 states and 110136 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)